From c13f7e1a94007c4381814e7daf033e3e8f0663f3 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Fri, 29 Oct 2010 23:32:01 +0200 Subject: drbd: don't recvmsg with zero length This should fix a performance degradation we observed recently. If we don't expect any subheader, we should not call into the tcp stack, as that may add considerable latency if there is no data available at this point. For a synthetic synchronous write load with single outstanding writes, this additional latency when processing the "unplug remote" packet added up to a performance degradation factor >= 10. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_receiver.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 89d8a7cc4054..24487d4fb202 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -3627,17 +3627,19 @@ static void drbdd(struct drbd_conf *mdev) } shs = drbd_cmd_handler[cmd].pkt_size - sizeof(union p_header); - rv = drbd_recv(mdev, &header->h80.payload, shs); - if (unlikely(rv != shs)) { - dev_err(DEV, "short read while reading sub header: rv=%d\n", rv); - goto err_out; - } - if (packet_size - shs > 0 && !drbd_cmd_handler[cmd].expect_payload) { dev_err(DEV, "No payload expected %s l:%d\n", cmdname(cmd), packet_size); goto err_out; } + if (shs) { + rv = drbd_recv(mdev, &header->h80.payload, shs); + if (unlikely(rv != shs)) { + dev_err(DEV, "short read while reading sub header: rv=%d\n", rv); + goto err_out; + } + } + rv = drbd_cmd_handler[cmd].function(mdev, cmd, packet_size - shs); if (unlikely(!rv)) { -- cgit v1.2.3 From a115413de13ae6beb0cbfc198afe385a261ab284 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Sat, 13 Nov 2010 20:42:29 +0100 Subject: drbd: fix for spin_lock_irqsave in endio callback In commit 9b7f76dc37919ea36caa9680a3f765e5b19b25fb, Author: Lars Ellenberg Date: Wed Aug 11 23:40:24 2010 +0200 drbd: new configuration parameter c-min-rate a bad chunk slipped through, which is now reverted as well, restoring the correct irqsave for the endio callback. This patch also add comments at both req_mod() and in the endio callback so it should not happen again. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_req.h | 3 ++- drivers/block/drbd/drbd_worker.c | 10 +++++++++- 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/block/drbd/drbd_req.h b/drivers/block/drbd/drbd_req.h index 181ea0364822..ab2bd09d54b4 100644 --- a/drivers/block/drbd/drbd_req.h +++ b/drivers/block/drbd/drbd_req.h @@ -339,7 +339,8 @@ static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what) } /* completion of master bio is outside of spinlock. - * If you need it irqsave, do it your self! */ + * If you need it irqsave, do it your self! + * Which means: don't use from bio endio callback. */ static inline int req_mod(struct drbd_request *req, enum drbd_req_event what) { diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 47d223c2409c..34f224b018b3 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -193,8 +193,10 @@ void drbd_endio_sec(struct bio *bio, int error) */ void drbd_endio_pri(struct bio *bio, int error) { + unsigned long flags; struct drbd_request *req = bio->bi_private; struct drbd_conf *mdev = req->mdev; + struct bio_and_error m; enum drbd_req_event what; int uptodate = bio_flagged(bio, BIO_UPTODATE); @@ -220,7 +222,13 @@ void drbd_endio_pri(struct bio *bio, int error) bio_put(req->private_bio); req->private_bio = ERR_PTR(error); - req_mod(req, what); + /* not req_mod(), we need irqsave here! */ + spin_lock_irqsave(&mdev->req_lock, flags); + __req_mod(req, what, &m); + spin_unlock_irqrestore(&mdev->req_lock, flags); + + if (m.bio) + complete_master_bio(mdev, &m); } int w_read_retry_remote(struct drbd_conf *mdev, struct drbd_work *w, int cancel) -- cgit v1.2.3 From 32958fdd1663aeaa23b5edbfbb0db684ffd4e20e Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 09:36:23 -0300 Subject: [media] BKL: trivial BKL removal from V4L2 radio drivers The patch converts a bunch of V4L2 radio drivers to unlocked_ioctl. These are all simple conversions: most already had a lock and so the ioctl fop could simply be replaced by unlocked_ioctl. radio-miropcm20.c was converted to use the new V4L2 core lock. While doing this work I noticed that many of these drivers initialized some more fields or muted audio or something like that *after* creating the device node. This should be done before the device node is created to prevent problems. Especially hal tends to grab a device node as soon as it is created. In one or two cases the mutex_init was even done after the device creation! Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-aimslab.c | 16 ++++++++-------- drivers/media/radio/radio-aztech.c | 6 +++--- drivers/media/radio/radio-gemtek-pci.c | 6 +++--- drivers/media/radio/radio-gemtek.c | 14 +++++++------- drivers/media/radio/radio-maestro.c | 14 ++++++-------- drivers/media/radio/radio-maxiradio.c | 2 +- drivers/media/radio/radio-miropcm20.c | 6 ++++-- drivers/media/radio/radio-rtrack2.c | 10 +++++----- drivers/media/radio/radio-sf16fmi.c | 7 ++++--- drivers/media/radio/radio-sf16fmr2.c | 11 +++++------ drivers/media/radio/radio-terratec.c | 8 ++++---- drivers/media/radio/radio-trust.c | 18 +++++++++--------- drivers/media/radio/radio-zoltrix.c | 30 +++++++++++++++--------------- 13 files changed, 74 insertions(+), 74 deletions(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c index 5bf4985daede..05e832f61c3e 100644 --- a/drivers/media/radio/radio-aimslab.c +++ b/drivers/media/radio/radio-aimslab.c @@ -361,7 +361,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations rtrack_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops rtrack_ioctl_ops = { @@ -412,13 +412,6 @@ static int __init rtrack_init(void) rt->vdev.release = video_device_release_empty; video_set_drvdata(&rt->vdev, rt); - if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { - v4l2_device_unregister(&rt->v4l2_dev); - release_region(rt->io, 2); - return -EINVAL; - } - v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n"); - /* Set up the I/O locking */ mutex_init(&rt->lock); @@ -430,6 +423,13 @@ static int __init rtrack_init(void) sleep_delay(2000000); /* make sure it's totally down */ outb(0xc0, rt->io); /* steady volume, mute card */ + if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(&rt->v4l2_dev); + release_region(rt->io, 2); + return -EINVAL; + } + v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n"); + return 0; } diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c index c22311393624..dd8a6ab0d437 100644 --- a/drivers/media/radio/radio-aztech.c +++ b/drivers/media/radio/radio-aztech.c @@ -324,7 +324,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv, static const struct v4l2_file_operations aztech_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops aztech_ioctl_ops = { @@ -375,6 +375,8 @@ static int __init aztech_init(void) az->vdev.ioctl_ops = &aztech_ioctl_ops; az->vdev.release = video_device_release_empty; video_set_drvdata(&az->vdev, az); + /* mute card - prevents noisy bootups */ + outb(0, az->io); if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(v4l2_dev); @@ -383,8 +385,6 @@ static int __init aztech_init(void) } v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n"); - /* mute card - prevents noisy bootups */ - outb(0, az->io); return 0; } diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c index 79039674a0e0..28fa85ba2087 100644 --- a/drivers/media/radio/radio-gemtek-pci.c +++ b/drivers/media/radio/radio-gemtek-pci.c @@ -361,7 +361,7 @@ MODULE_DEVICE_TABLE(pci, gemtek_pci_id); static const struct v4l2_file_operations gemtek_pci_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = { @@ -422,11 +422,11 @@ static int __devinit gemtek_pci_probe(struct pci_dev *pdev, const struct pci_dev card->vdev.release = video_device_release_empty; video_set_drvdata(&card->vdev, card); + gemtek_pci_mute(card); + if (video_register_device(&card->vdev, VFL_TYPE_RADIO, nr_radio) < 0) goto err_video; - gemtek_pci_mute(card); - v4l2_info(v4l2_dev, "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n", pdev->revision, card->iobase, card->iobase + card->length - 1); diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c index 73985f641f07..259936422e49 100644 --- a/drivers/media/radio/radio-gemtek.c +++ b/drivers/media/radio/radio-gemtek.c @@ -378,7 +378,7 @@ static int gemtek_probe(struct gemtek *gt) static const struct v4l2_file_operations gemtek_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static int vidioc_querycap(struct file *file, void *priv, @@ -577,12 +577,6 @@ static int __init gemtek_init(void) gt->vdev.release = video_device_release_empty; video_set_drvdata(>->vdev, gt); - if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { - v4l2_device_unregister(v4l2_dev); - release_region(gt->io, 1); - return -EBUSY; - } - /* Set defaults */ gt->lastfreq = GEMTEK_LOWFREQ; gt->bu2614data = 0; @@ -590,6 +584,12 @@ static int __init gemtek_init(void) if (initmute) gemtek_mute(gt); + if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(v4l2_dev); + release_region(gt->io, 1); + return -EBUSY; + } + return 0; } diff --git a/drivers/media/radio/radio-maestro.c b/drivers/media/radio/radio-maestro.c index 08f1051979ca..6af61bfeb178 100644 --- a/drivers/media/radio/radio-maestro.c +++ b/drivers/media/radio/radio-maestro.c @@ -299,7 +299,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations maestro_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops maestro_ioctl_ops = { @@ -383,22 +383,20 @@ static int __devinit maestro_probe(struct pci_dev *pdev, dev->vdev.release = video_device_release_empty; video_set_drvdata(&dev->vdev, dev); + if (!radio_power_on(dev)) { + retval = -EIO; + goto errfr1; + } + retval = video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr); if (retval) { v4l2_err(v4l2_dev, "can't register video device!\n"); goto errfr1; } - if (!radio_power_on(dev)) { - retval = -EIO; - goto errunr; - } - v4l2_info(v4l2_dev, "version " DRIVER_VERSION "\n"); return 0; -errunr: - video_unregister_device(&dev->vdev); errfr1: v4l2_device_unregister(v4l2_dev); errfr: diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c index 255d40df4b46..6459a220b0dd 100644 --- a/drivers/media/radio/radio-maxiradio.c +++ b/drivers/media/radio/radio-maxiradio.c @@ -346,7 +346,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv, static const struct v4l2_file_operations maxiradio_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = { diff --git a/drivers/media/radio/radio-miropcm20.c b/drivers/media/radio/radio-miropcm20.c index 4ff885445fd4..3fb76e3834c9 100644 --- a/drivers/media/radio/radio-miropcm20.c +++ b/drivers/media/radio/radio-miropcm20.c @@ -33,6 +33,7 @@ struct pcm20 { unsigned long freq; int muted; struct snd_miro_aci *aci; + struct mutex lock; }; static struct pcm20 pcm20_card = { @@ -72,7 +73,7 @@ static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq) static const struct v4l2_file_operations pcm20_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static int vidioc_querycap(struct file *file, void *priv, @@ -229,7 +230,7 @@ static int __init pcm20_init(void) return -ENODEV; } strlcpy(v4l2_dev->name, "miropcm20", sizeof(v4l2_dev->name)); - + mutex_init(&dev->lock); res = v4l2_device_register(NULL, v4l2_dev); if (res < 0) { @@ -242,6 +243,7 @@ static int __init pcm20_init(void) dev->vdev.fops = &pcm20_fops; dev->vdev.ioctl_ops = &pcm20_ioctl_ops; dev->vdev.release = video_device_release_empty; + dev->vdev.lock = &dev->lock; video_set_drvdata(&dev->vdev, dev); if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c index a79296aac9a9..8d6ea591bd18 100644 --- a/drivers/media/radio/radio-rtrack2.c +++ b/drivers/media/radio/radio-rtrack2.c @@ -266,7 +266,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations rtrack2_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops rtrack2_ioctl_ops = { @@ -315,6 +315,10 @@ static int __init rtrack2_init(void) dev->vdev.release = video_device_release_empty; video_set_drvdata(&dev->vdev, dev); + /* mute card - prevents noisy bootups */ + outb(1, dev->io); + dev->muted = 1; + mutex_init(&dev->lock); if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(v4l2_dev); @@ -324,10 +328,6 @@ static int __init rtrack2_init(void) v4l2_info(v4l2_dev, "AIMSlab Radiotrack II card driver.\n"); - /* mute card - prevents noisy bootups */ - outb(1, dev->io); - dev->muted = 1; - return 0; } diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c index 985359d18aa5..b5a5f89e238a 100644 --- a/drivers/media/radio/radio-sf16fmi.c +++ b/drivers/media/radio/radio-sf16fmi.c @@ -260,7 +260,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations fmi_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops fmi_ioctl_ops = { @@ -382,6 +382,9 @@ static int __init fmi_init(void) mutex_init(&fmi->lock); + /* mute card - prevents noisy bootups */ + fmi_mute(fmi); + if (video_register_device(&fmi->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(v4l2_dev); release_region(fmi->io, 2); @@ -391,8 +394,6 @@ static int __init fmi_init(void) } v4l2_info(v4l2_dev, "card driver at 0x%x\n", fmi->io); - /* mute card - prevents noisy bootups */ - fmi_mute(fmi); return 0; } diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c index 52c7bbb32b8b..dc3f04c52d5e 100644 --- a/drivers/media/radio/radio-sf16fmr2.c +++ b/drivers/media/radio/radio-sf16fmr2.c @@ -376,7 +376,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations fmr2_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops fmr2_ioctl_ops = { @@ -424,6 +424,10 @@ static int __init fmr2_init(void) fmr2->vdev.release = video_device_release_empty; video_set_drvdata(&fmr2->vdev, fmr2); + /* mute card - prevents noisy bootups */ + fmr2_mute(fmr2->io); + fmr2_product_info(fmr2); + if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(v4l2_dev); release_region(fmr2->io, 2); @@ -431,11 +435,6 @@ static int __init fmr2_init(void) } v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io); - /* mute card - prevents noisy bootups */ - mutex_lock(&fmr2->lock); - fmr2_mute(fmr2->io); - fmr2_product_info(fmr2); - mutex_unlock(&fmr2->lock); debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type)); return 0; } diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c index fc1c860fd438..a32663917059 100644 --- a/drivers/media/radio/radio-terratec.c +++ b/drivers/media/radio/radio-terratec.c @@ -338,7 +338,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations terratec_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops terratec_ioctl_ops = { @@ -389,6 +389,9 @@ static int __init terratec_init(void) mutex_init(&tt->lock); + /* mute card - prevents noisy bootups */ + tt_write_vol(tt, 0); + if (video_register_device(&tt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(&tt->v4l2_dev); release_region(tt->io, 2); @@ -396,9 +399,6 @@ static int __init terratec_init(void) } v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver.\n"); - - /* mute card - prevents noisy bootups */ - tt_write_vol(tt, 0); return 0; } diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c index 9d6dcf8af5b0..22fa9cc28abe 100644 --- a/drivers/media/radio/radio-trust.c +++ b/drivers/media/radio/radio-trust.c @@ -344,7 +344,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations trust_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops trust_ioctl_ops = { @@ -396,14 +396,6 @@ static int __init trust_init(void) tr->vdev.release = video_device_release_empty; video_set_drvdata(&tr->vdev, tr); - if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { - v4l2_device_unregister(v4l2_dev); - release_region(tr->io, 2); - return -EINVAL; - } - - v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n"); - write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */ write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */ write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */ @@ -418,6 +410,14 @@ static int __init trust_init(void) /* mute card - prevents noisy bootups */ tr_setmute(tr, 1); + if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(v4l2_dev); + release_region(tr->io, 2); + return -EINVAL; + } + + v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n"); + return 0; } diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c index f31eab99c943..af99c5bd88c1 100644 --- a/drivers/media/radio/radio-zoltrix.c +++ b/drivers/media/radio/radio-zoltrix.c @@ -377,7 +377,7 @@ static int vidioc_s_audio(struct file *file, void *priv, static const struct v4l2_file_operations zoltrix_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops zoltrix_ioctl_ops = { @@ -424,20 +424,6 @@ static int __init zoltrix_init(void) return res; } - strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name)); - zol->vdev.v4l2_dev = v4l2_dev; - zol->vdev.fops = &zoltrix_fops; - zol->vdev.ioctl_ops = &zoltrix_ioctl_ops; - zol->vdev.release = video_device_release_empty; - video_set_drvdata(&zol->vdev, zol); - - if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { - v4l2_device_unregister(v4l2_dev); - release_region(zol->io, 2); - return -EINVAL; - } - v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n"); - mutex_init(&zol->lock); /* mute card - prevents noisy bootups */ @@ -452,6 +438,20 @@ static int __init zoltrix_init(void) zol->curvol = 0; zol->stereo = 1; + strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name)); + zol->vdev.v4l2_dev = v4l2_dev; + zol->vdev.fops = &zoltrix_fops; + zol->vdev.ioctl_ops = &zoltrix_ioctl_ops; + zol->vdev.release = video_device_release_empty; + video_set_drvdata(&zol->vdev, zol); + + if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(v4l2_dev); + release_region(zol->io, 2); + return -EINVAL; + } + v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n"); + return 0; } -- cgit v1.2.3 From 1cccee0b84e3445a142d0e9edcbf66b677b2e7e5 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 09:43:52 -0300 Subject: [media] cadet: use unlocked_ioctl Converted from ioctl to unlocked_ioctl. This driver already used an internal lock, but it was missing in cadet_open and cadet_release and it was not used correctly in cadet_read. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-cadet.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c index b701ea6e7c73..bc9ad0897c55 100644 --- a/drivers/media/radio/radio-cadet.c +++ b/drivers/media/radio/radio-cadet.c @@ -328,11 +328,10 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo unsigned char readbuf[RDS_BUFFER]; int i = 0; + mutex_lock(&dev->lock); if (dev->rdsstat == 0) { - mutex_lock(&dev->lock); dev->rdsstat = 1; outb(0x80, dev->io); /* Select RDS fifo */ - mutex_unlock(&dev->lock); init_timer(&dev->readtimer); dev->readtimer.function = cadet_handler; dev->readtimer.data = (unsigned long)dev; @@ -340,12 +339,15 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo add_timer(&dev->readtimer); } if (dev->rdsin == dev->rdsout) { + mutex_unlock(&dev->lock); if (file->f_flags & O_NONBLOCK) return -EWOULDBLOCK; interruptible_sleep_on(&dev->read_queue); + mutex_lock(&dev->lock); } while (i < count && dev->rdsin != dev->rdsout) readbuf[i++] = dev->rdsbuf[dev->rdsout++]; + mutex_unlock(&dev->lock); if (copy_to_user(data, readbuf, i)) return -EFAULT; @@ -525,9 +527,11 @@ static int cadet_open(struct file *file) { struct cadet *dev = video_drvdata(file); + mutex_lock(&dev->lock); dev->users++; if (1 == dev->users) init_waitqueue_head(&dev->read_queue); + mutex_unlock(&dev->lock); return 0; } @@ -535,11 +539,13 @@ static int cadet_release(struct file *file) { struct cadet *dev = video_drvdata(file); + mutex_lock(&dev->lock); dev->users--; if (0 == dev->users) { del_timer_sync(&dev->readtimer); dev->rdsstat = 0; } + mutex_unlock(&dev->lock); return 0; } @@ -559,7 +565,7 @@ static const struct v4l2_file_operations cadet_fops = { .open = cadet_open, .release = cadet_release, .read = cadet_read, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .poll = cadet_poll, }; -- cgit v1.2.3 From ee71e42321cced11fecb989d743ad9cdb0c384ea Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 09:46:23 -0300 Subject: [media] tea5764: convert to unlocked_ioctl Convert from ioctl to unlocked_ioctl using the v4l2 core lock. Also removed the 'exclusive access' limitation. There was no need for it and it violates the v4l2 spec as well. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-tea5764.c | 49 +++++++------------------------------ 1 file changed, 9 insertions(+), 40 deletions(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-tea5764.c b/drivers/media/radio/radio-tea5764.c index 789d2ec66e19..0e71d816c725 100644 --- a/drivers/media/radio/radio-tea5764.c +++ b/drivers/media/radio/radio-tea5764.c @@ -142,7 +142,6 @@ struct tea5764_device { struct video_device *videodev; struct tea5764_regs regs; struct mutex mutex; - int users; }; /* I2C code related */ @@ -458,41 +457,10 @@ static int vidioc_s_audio(struct file *file, void *priv, return 0; } -static int tea5764_open(struct file *file) -{ - /* Currently we support only one device */ - struct tea5764_device *radio = video_drvdata(file); - - mutex_lock(&radio->mutex); - /* Only exclusive access */ - if (radio->users) { - mutex_unlock(&radio->mutex); - return -EBUSY; - } - radio->users++; - mutex_unlock(&radio->mutex); - file->private_data = radio; - return 0; -} - -static int tea5764_close(struct file *file) -{ - struct tea5764_device *radio = video_drvdata(file); - - if (!radio) - return -ENODEV; - mutex_lock(&radio->mutex); - radio->users--; - mutex_unlock(&radio->mutex); - return 0; -} - /* File system interface */ static const struct v4l2_file_operations tea5764_fops = { .owner = THIS_MODULE, - .open = tea5764_open, - .release = tea5764_close, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops tea5764_ioctl_ops = { @@ -527,7 +495,7 @@ static int __devinit tea5764_i2c_probe(struct i2c_client *client, int ret; PDEBUG("probe"); - radio = kmalloc(sizeof(struct tea5764_device), GFP_KERNEL); + radio = kzalloc(sizeof(struct tea5764_device), GFP_KERNEL); if (!radio) return -ENOMEM; @@ -555,12 +523,7 @@ static int __devinit tea5764_i2c_probe(struct i2c_client *client, i2c_set_clientdata(client, radio); video_set_drvdata(radio->videodev, radio); - - ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); - if (ret < 0) { - PWARN("Could not register video device!"); - goto errrel; - } + radio->videodev->lock = &radio->mutex; /* initialize and power off the chip */ tea5764_i2c_read(radio); @@ -568,6 +531,12 @@ static int __devinit tea5764_i2c_probe(struct i2c_client *client, tea5764_mute(radio, 1); tea5764_power_down(radio); + ret = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); + if (ret < 0) { + PWARN("Could not register video device!"); + goto errrel; + } + PINFO("registered."); return 0; errrel: -- cgit v1.2.3 From 725ea8cf1c1f5ba53177d20d2d2f6dbc139b643e Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 09:48:24 -0300 Subject: [media] si4713: convert to unlocked_ioctl Convert ioctl to unlocked_ioctl. Note that for this driver the locking is done inside the sub-device. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-si4713.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c index 6a435786b63d..3a84c3dcc04c 100644 --- a/drivers/media/radio/radio-si4713.c +++ b/drivers/media/radio/radio-si4713.c @@ -53,7 +53,8 @@ struct radio_si4713_device { /* radio_si4713_fops - file operations interface */ static const struct v4l2_file_operations radio_si4713_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + /* Note: locking is done at the subdev level in the i2c driver. */ + .unlocked_ioctl = video_ioctl2, }; /* Video4Linux Interface */ -- cgit v1.2.3 From d2c998f7453af7ad416bc38d09ae9d453d2fac5e Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 09:49:34 -0300 Subject: [media] typhoon: convert to unlocked_ioctl Convert the typhoon driver from ioctl to unlocked_ioctl. When doing this I noticed a bug where curfreq was not initialized correctly to mutefreq (it wasn't multiplied by 16). The initialization is now also done before the device node is created. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-typhoon.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c index b1f630527dc1..8dbbf08f2207 100644 --- a/drivers/media/radio/radio-typhoon.c +++ b/drivers/media/radio/radio-typhoon.c @@ -317,7 +317,7 @@ static int vidioc_log_status(struct file *file, void *priv) static const struct v4l2_file_operations typhoon_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops typhoon_ioctl_ops = { @@ -344,18 +344,18 @@ static int __init typhoon_init(void) strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name)); dev->io = io; - dev->curfreq = dev->mutefreq = mutefreq; if (dev->io == -1) { v4l2_err(v4l2_dev, "You must set an I/O address with io=0x316 or io=0x336\n"); return -EINVAL; } - if (dev->mutefreq < 87000 || dev->mutefreq > 108500) { + if (mutefreq < 87000 || mutefreq > 108500) { v4l2_err(v4l2_dev, "You must set a frequency (in kHz) used when muting the card,\n"); v4l2_err(v4l2_dev, "e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n"); return -EINVAL; } + dev->curfreq = dev->mutefreq = mutefreq << 4; mutex_init(&dev->lock); if (!request_region(dev->io, 8, "typhoon")) { @@ -378,17 +378,17 @@ static int __init typhoon_init(void) dev->vdev.ioctl_ops = &typhoon_ioctl_ops; dev->vdev.release = video_device_release_empty; video_set_drvdata(&dev->vdev, dev); + + /* mute card - prevents noisy bootups */ + typhoon_mute(dev); + if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { v4l2_device_unregister(&dev->v4l2_dev); release_region(dev->io, 8); return -EINVAL; } v4l2_info(v4l2_dev, "port 0x%x.\n", dev->io); - v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", dev->mutefreq); - dev->mutefreq <<= 4; - - /* mute card - prevents noisy bootups */ - typhoon_mute(dev); + v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", mutefreq); return 0; } -- cgit v1.2.3 From 61df3c9b3fe6a7e47d25b27ae4df0ecdb07b8fbd Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 10:09:38 -0300 Subject: [media] BKL: trivial ioctl -> unlocked_ioctl video driver conversions These drivers could be trivially converted to unlocked_ioctl since they already did locking. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/arv.c | 2 +- drivers/media/video/bw-qcam.c | 2 +- drivers/media/video/c-qcam.c | 2 +- drivers/media/video/meye.c | 14 +++++++------- drivers/media/video/pms.c | 2 +- drivers/media/video/w9966.c | 2 +- 6 files changed, 12 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/arv.c b/drivers/media/video/arv.c index 31e7a123d19a..f989f2820d88 100644 --- a/drivers/media/video/arv.c +++ b/drivers/media/video/arv.c @@ -712,7 +712,7 @@ static int ar_initialize(struct ar *ar) static const struct v4l2_file_operations ar_fops = { .owner = THIS_MODULE, .read = ar_read, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops ar_ioctl_ops = { diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c index 935e0c9a9674..c1193506131c 100644 --- a/drivers/media/video/bw-qcam.c +++ b/drivers/media/video/bw-qcam.c @@ -860,7 +860,7 @@ static ssize_t qcam_read(struct file *file, char __user *buf, static const struct v4l2_file_operations qcam_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .read = qcam_read, }; diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c index 6e4b19698c13..24fc00965a12 100644 --- a/drivers/media/video/c-qcam.c +++ b/drivers/media/video/c-qcam.c @@ -718,7 +718,7 @@ static ssize_t qcam_read(struct file *file, char __user *buf, static const struct v4l2_file_operations qcam_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .read = qcam_read, }; diff --git a/drivers/media/video/meye.c b/drivers/media/video/meye.c index 2be23bccd3c8..48d2c2419c13 100644 --- a/drivers/media/video/meye.c +++ b/drivers/media/video/meye.c @@ -1659,7 +1659,7 @@ static const struct v4l2_file_operations meye_fops = { .open = meye_open, .release = meye_release, .mmap = meye_mmap, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .poll = meye_poll, }; @@ -1831,12 +1831,6 @@ static int __devinit meye_probe(struct pci_dev *pcidev, msleep(1); mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK); - if (video_register_device(meye.vdev, VFL_TYPE_GRABBER, - video_nr) < 0) { - v4l2_err(v4l2_dev, "video_register_device failed\n"); - goto outvideoreg; - } - mutex_init(&meye.lock); init_waitqueue_head(&meye.proc_list); meye.brightness = 32 << 10; @@ -1858,6 +1852,12 @@ static int __devinit meye_probe(struct pci_dev *pcidev, sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAPICTURE, 0); sony_pic_camera_command(SONY_PIC_COMMAND_SETCAMERAAGC, 48); + if (video_register_device(meye.vdev, VFL_TYPE_GRABBER, + video_nr) < 0) { + v4l2_err(v4l2_dev, "video_register_device failed\n"); + goto outvideoreg; + } + v4l2_info(v4l2_dev, "Motion Eye Camera Driver v%s.\n", MEYE_DRIVER_VERSION); v4l2_info(v4l2_dev, "mchip KL5A72002 rev. %d, base %lx, irq %d\n", diff --git a/drivers/media/video/pms.c b/drivers/media/video/pms.c index 7129b50757db..7551907f8c28 100644 --- a/drivers/media/video/pms.c +++ b/drivers/media/video/pms.c @@ -932,7 +932,7 @@ static ssize_t pms_read(struct file *file, char __user *buf, static const struct v4l2_file_operations pms_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .read = pms_read, }; diff --git a/drivers/media/video/w9966.c b/drivers/media/video/w9966.c index 635420d8d84a..019ee206cbee 100644 --- a/drivers/media/video/w9966.c +++ b/drivers/media/video/w9966.c @@ -815,7 +815,7 @@ out: static const struct v4l2_file_operations w9966_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .read = w9966_v4l_read, }; -- cgit v1.2.3 From feecf93d6b16887bf7e12fcc604bfba9048b2fa5 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 11:13:39 -0300 Subject: [media] sn9c102: convert to unlocked_ioctl Trivial conversion, this driver used a mutex already. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/sn9c102/sn9c102_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/video/sn9c102/sn9c102_core.c b/drivers/media/video/sn9c102/sn9c102_core.c index 28e19daadec9..f49fbfb7dc13 100644 --- a/drivers/media/video/sn9c102/sn9c102_core.c +++ b/drivers/media/video/sn9c102/sn9c102_core.c @@ -3238,7 +3238,7 @@ static const struct v4l2_file_operations sn9c102_fops = { .owner = THIS_MODULE, .open = sn9c102_open, .release = sn9c102_release, - .ioctl = sn9c102_ioctl, + .unlocked_ioctl = sn9c102_ioctl, .read = sn9c102_read, .poll = sn9c102_poll, .mmap = sn9c102_mmap, -- cgit v1.2.3 From ca2621963de3934613f8aa63e19c03b1751707ae Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 11:17:00 -0300 Subject: [media] et61x251_core: trivial conversion to unlocked_ioctl Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/et61x251/et61x251_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/video/et61x251/et61x251_core.c b/drivers/media/video/et61x251/et61x251_core.c index a5cfc76b40b7..bb164099ea2c 100644 --- a/drivers/media/video/et61x251/et61x251_core.c +++ b/drivers/media/video/et61x251/et61x251_core.c @@ -2530,7 +2530,7 @@ static const struct v4l2_file_operations et61x251_fops = { .owner = THIS_MODULE, .open = et61x251_open, .release = et61x251_release, - .ioctl = et61x251_ioctl, + .unlocked_ioctl = et61x251_ioctl, .read = et61x251_read, .poll = et61x251_poll, .mmap = et61x251_mmap, -- cgit v1.2.3 From 20aa5bb9dc4b5aba1b4d0f15aa92c4e83721a343 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 14 Nov 2010 13:09:21 -0300 Subject: [media] cafe_ccic: replace ioctl by unlocked_ioctl Trivial change, approved by Jonathan Corbet . Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cafe_ccic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c index 7bc36670071a..8e6634ce92e7 100644 --- a/drivers/media/video/cafe_ccic.c +++ b/drivers/media/video/cafe_ccic.c @@ -1775,7 +1775,7 @@ static const struct v4l2_file_operations cafe_v4l_fops = { .read = cafe_v4l_read, .poll = cafe_v4l_poll, .mmap = cafe_v4l_mmap, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops cafe_v4l_ioctl_ops = { -- cgit v1.2.3 From 697566939dc60048fca6e6dd69c7e089aaeb7ff8 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 16 Nov 2010 18:12:16 -0300 Subject: [media] sh_vou: convert to unlocked_ioctl Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/sh_vou.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/sh_vou.c b/drivers/media/video/sh_vou.c index 0f4906136b8f..858b2f895453 100644 --- a/drivers/media/video/sh_vou.c +++ b/drivers/media/video/sh_vou.c @@ -75,6 +75,7 @@ struct sh_vou_device { int pix_idx; struct videobuf_buffer *active; enum sh_vou_status status; + struct mutex fop_lock; }; struct sh_vou_file { @@ -235,7 +236,7 @@ static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb) vb->state = VIDEOBUF_NEEDS_INIT; } -/* Locking: caller holds vq->vb_lock mutex */ +/* Locking: caller holds fop_lock mutex */ static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { @@ -257,7 +258,7 @@ static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count, return 0; } -/* Locking: caller holds vq->vb_lock mutex */ +/* Locking: caller holds fop_lock mutex */ static int sh_vou_buf_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, enum v4l2_field field) @@ -306,7 +307,7 @@ static int sh_vou_buf_prepare(struct videobuf_queue *vq, return 0; } -/* Locking: caller holds vq->vb_lock mutex and vq->irqlock spinlock */ +/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */ static void sh_vou_buf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { @@ -1190,7 +1191,7 @@ static int sh_vou_open(struct file *file) V4L2_BUF_TYPE_VIDEO_OUTPUT, V4L2_FIELD_NONE, sizeof(struct videobuf_buffer), vdev, - NULL); + &vou_dev->fop_lock); return 0; } @@ -1292,7 +1293,7 @@ static const struct v4l2_file_operations sh_vou_fops = { .owner = THIS_MODULE, .open = sh_vou_open, .release = sh_vou_release, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .mmap = sh_vou_mmap, .poll = sh_vou_poll, }; @@ -1331,6 +1332,7 @@ static int __devinit sh_vou_probe(struct platform_device *pdev) INIT_LIST_HEAD(&vou_dev->queue); spin_lock_init(&vou_dev->lock); + mutex_init(&vou_dev->fop_lock); atomic_set(&vou_dev->use_count, 0); vou_dev->pdata = vou_pdata; vou_dev->status = SH_VOU_IDLE; @@ -1388,6 +1390,7 @@ static int __devinit sh_vou_probe(struct platform_device *pdev) vdev->tvnorms |= V4L2_STD_PAL; vdev->v4l2_dev = &vou_dev->v4l2_dev; vdev->release = video_device_release; + vdev->lock = &vou_dev->fop_lock; vou_dev->vdev = vdev; video_set_drvdata(vdev, vou_dev); -- cgit v1.2.3 From 4f68775b7dfc6115169f689a42535486bf10977e Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 16 Nov 2010 18:13:06 -0300 Subject: [media] radio-timb: convert to unlocked_ioctl MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Hans Verkuil Acked-by: Richard Röjfors Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-timb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/radio/radio-timb.c b/drivers/media/radio/radio-timb.c index b8bb3ef47df5..a185610b376b 100644 --- a/drivers/media/radio/radio-timb.c +++ b/drivers/media/radio/radio-timb.c @@ -34,6 +34,7 @@ struct timbradio { struct v4l2_subdev *sd_dsp; struct video_device video_dev; struct v4l2_device v4l2_dev; + struct mutex lock; }; @@ -142,7 +143,7 @@ static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { static const struct v4l2_file_operations timbradio_fops = { .owner = THIS_MODULE, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static int __devinit timbradio_probe(struct platform_device *pdev) @@ -164,6 +165,7 @@ static int __devinit timbradio_probe(struct platform_device *pdev) } tr->pdata = *pdata; + mutex_init(&tr->lock); strlcpy(tr->video_dev.name, "Timberdale Radio", sizeof(tr->video_dev.name)); @@ -171,6 +173,7 @@ static int __devinit timbradio_probe(struct platform_device *pdev) tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; tr->video_dev.release = video_device_release_empty; tr->video_dev.minor = -1; + tr->video_dev.lock = &tr->lock; strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); err = v4l2_device_register(NULL, &tr->v4l2_dev); -- cgit v1.2.3 From 78b055be2710b63cb196fc37669f3b662fecc9e4 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 19 Nov 2010 17:04:31 -0300 Subject: [media] cx18: convert to unlocked_ioctl Also added locking around snd_cx18_pcm_ioctl as a precaution as requested by Andy Walls. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx18/cx18-alsa-pcm.c | 8 +++++++- drivers/media/video/cx18/cx18-streams.c | 2 +- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/cx18/cx18-alsa-pcm.c b/drivers/media/video/cx18/cx18-alsa-pcm.c index 8f55692db36d..82d195be9197 100644 --- a/drivers/media/video/cx18/cx18-alsa-pcm.c +++ b/drivers/media/video/cx18/cx18-alsa-pcm.c @@ -218,7 +218,13 @@ static int snd_cx18_pcm_capture_close(struct snd_pcm_substream *substream) static int snd_cx18_pcm_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg) { - return snd_pcm_lib_ioctl(substream, cmd, arg); + struct snd_cx18_card *cxsc = snd_pcm_substream_chip(substream); + int ret; + + snd_cx18_lock(cxsc); + ret = snd_pcm_lib_ioctl(substream, cmd, arg); + snd_cx18_unlock(cxsc); + return ret; } diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index 9045f1ece0eb..ab461e27d9dd 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -41,7 +41,7 @@ static struct v4l2_file_operations cx18_v4l2_enc_fops = { .read = cx18_v4l2_read, .open = cx18_v4l2_open, /* FIXME change to video_ioctl2 if serialization lock can be removed */ - .ioctl = cx18_v4l2_ioctl, + .unlocked_ioctl = cx18_v4l2_ioctl, .release = cx18_v4l2_close, .poll = cx18_v4l2_enc_poll, }; -- cgit v1.2.3 From 2877842de8cbf6272b0a851cb12587b7dd8c2afb Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Nov 2010 06:43:51 -0300 Subject: [media] v4l2-dev: use mutex_lock_interruptible instead of plain mutex_lock Where reasonable use mutex_lock_interruptible instead of mutex_lock. Also fix the poll, read and write error codes when called with an unregistered device (e.g. after a USB device was disconnected). Poll must return POLLERR|POLLHUP and read/write must return -ENODEV. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 03f7f4670e9b..bfd392e2436d 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -186,12 +186,12 @@ static ssize_t v4l2_read(struct file *filp, char __user *buf, size_t sz, loff_t *off) { struct video_device *vdev = video_devdata(filp); - int ret = -EIO; + int ret = -ENODEV; if (!vdev->fops->read) return -EINVAL; - if (vdev->lock) - mutex_lock(vdev->lock); + if (vdev->lock && mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->read(filp, buf, sz, off); if (vdev->lock) @@ -203,12 +203,12 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf, size_t sz, loff_t *off) { struct video_device *vdev = video_devdata(filp); - int ret = -EIO; + int ret = -ENODEV; if (!vdev->fops->write) return -EINVAL; - if (vdev->lock) - mutex_lock(vdev->lock); + if (vdev->lock && mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->write(filp, buf, sz, off); if (vdev->lock) @@ -219,10 +219,10 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf, static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll) { struct video_device *vdev = video_devdata(filp); - int ret = DEFAULT_POLLMASK; + int ret = POLLERR | POLLHUP; if (!vdev->fops->poll) - return ret; + return DEFAULT_POLLMASK; if (vdev->lock) mutex_lock(vdev->lock); if (video_is_registered(vdev)) @@ -238,8 +238,8 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) int ret = -ENODEV; if (vdev->fops->unlocked_ioctl) { - if (vdev->lock) - mutex_lock(vdev->lock); + if (vdev->lock && mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->unlocked_ioctl(filp, cmd, arg); if (vdev->lock) @@ -265,8 +265,8 @@ static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm) if (!vdev->fops->mmap) return ret; - if (vdev->lock) - mutex_lock(vdev->lock); + if (vdev->lock && mutex_lock_interruptible(vdev->lock)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->mmap(filp, vm); if (vdev->lock) @@ -292,8 +292,10 @@ static int v4l2_open(struct inode *inode, struct file *filp) video_get(vdev); mutex_unlock(&videodev_lock); if (vdev->fops->open) { - if (vdev->lock) - mutex_lock(vdev->lock); + if (vdev->lock && mutex_lock_interruptible(vdev->lock)) { + ret = -ERESTARTSYS; + goto err; + } if (video_is_registered(vdev)) ret = vdev->fops->open(filp); else @@ -302,6 +304,7 @@ static int v4l2_open(struct inode *inode, struct file *filp) mutex_unlock(vdev->lock); } +err: /* decrease the refcount in case of an error */ if (ret) video_put(vdev); -- cgit v1.2.3 From 879aa24d6394aa04b690a600a41ff500441ad384 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Nov 2010 06:47:28 -0300 Subject: [media] V4L: improve the BKL replacement heuristic The BKL replacement mutex had some serious performance side-effects on V4L drivers. It is replaced by a better heuristic that works around the worst of the side-effects. Read the v4l2-dev.c comments for the whole sorry story. This is a temporary measure only until we can convert all v4l drivers to use unlocked_ioctl. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 31 ++++++++++++++++++++++++++++--- drivers/media/video/v4l2-device.c | 1 + include/media/v4l2-device.h | 2 ++ 3 files changed, 31 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index bfd392e2436d..6b64fd607b20 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -245,13 +245,38 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) if (vdev->lock) mutex_unlock(vdev->lock); } else if (vdev->fops->ioctl) { - /* TODO: convert all drivers to unlocked_ioctl */ + /* This code path is a replacement for the BKL. It is a major + * hack but it will have to do for those drivers that are not + * yet converted to use unlocked_ioctl. + * + * There are two options: if the driver implements struct + * v4l2_device, then the lock defined there is used to + * serialize the ioctls. Otherwise the v4l2 core lock defined + * below is used. This lock is really bad since it serializes + * completely independent devices. + * + * Both variants suffer from the same problem: if the driver + * sleeps, then it blocks all ioctls since the lock is still + * held. This is very common for VIDIOC_DQBUF since that + * normally waits for a frame to arrive. As a result any other + * ioctl calls will proceed very, very slowly since each call + * will have to wait for the VIDIOC_QBUF to finish. Things that + * should take 0.01s may now take 10-20 seconds. + * + * The workaround is to *not* take the lock for VIDIOC_DQBUF. + * This actually works OK for videobuf-based drivers, since + * videobuf will take its own internal lock. + */ static DEFINE_MUTEX(v4l2_ioctl_mutex); + struct mutex *m = vdev->v4l2_dev ? + &vdev->v4l2_dev->ioctl_lock : &v4l2_ioctl_mutex; - mutex_lock(&v4l2_ioctl_mutex); + if (cmd != VIDIOC_DQBUF && mutex_lock_interruptible(m)) + return -ERESTARTSYS; if (video_is_registered(vdev)) ret = vdev->fops->ioctl(filp, cmd, arg); - mutex_unlock(&v4l2_ioctl_mutex); + if (cmd != VIDIOC_DQBUF) + mutex_unlock(m); } else ret = -ENOTTY; diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c index 0b08f96b74a5..7fe6f92af480 100644 --- a/drivers/media/video/v4l2-device.c +++ b/drivers/media/video/v4l2-device.c @@ -35,6 +35,7 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) INIT_LIST_HEAD(&v4l2_dev->subdevs); spin_lock_init(&v4l2_dev->lock); + mutex_init(&v4l2_dev->ioctl_lock); v4l2_dev->dev = dev; if (dev == NULL) { /* If dev == NULL, then name must be filled in by the caller */ diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h index 6648036b728d..b16f307d471a 100644 --- a/include/media/v4l2-device.h +++ b/include/media/v4l2-device.h @@ -51,6 +51,8 @@ struct v4l2_device { unsigned int notification, void *arg); /* The control handler. May be NULL. */ struct v4l2_ctrl_handler *ctrl_handler; + /* BKL replacement mutex. Temporary solution only. */ + struct mutex ioctl_lock; }; /* Initialize v4l2_dev and make dev->driver_data point to v4l2_dev. -- cgit v1.2.3 From ca9afe6f87b569cdf8e797395381f18ae23a2905 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 26 Nov 2010 06:54:53 -0300 Subject: [media] v4l2-dev: fix race condition The unregister function had a race condition with the v4l2_open function. Ensure that both functions test and clear the REGISTER flag from within a critical section. Thanks to Laurent Pinchart for finding this race. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/v4l2-dev.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 6b64fd607b20..359e23290a7e 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -309,7 +309,7 @@ static int v4l2_open(struct inode *inode, struct file *filp) mutex_lock(&videodev_lock); vdev = video_devdata(filp); /* return ENODEV if the video device has already been removed. */ - if (vdev == NULL) { + if (vdev == NULL || !video_is_registered(vdev)) { mutex_unlock(&videodev_lock); return -ENODEV; } @@ -624,7 +624,12 @@ void video_unregister_device(struct video_device *vdev) if (!vdev || !video_is_registered(vdev)) return; + mutex_lock(&videodev_lock); + /* This must be in a critical section to prevent a race with v4l2_open. + * Once this bit has been cleared video_get may never be called again. + */ clear_bit(V4L2_FL_REGISTERED, &vdev->flags); + mutex_unlock(&videodev_lock); device_unregister(&vdev->dev); } EXPORT_SYMBOL(video_unregister_device); -- cgit v1.2.3 From 23d9f3ef23f0dc4bb20ccd5540b9a91ff08da08f Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 21 Nov 2010 07:58:54 -0300 Subject: [media] uvcvideo: Lock controls mutex when querying menus uvc_find_control() must be called with the controls mutex locked. Fix uvc_query_v4l2_menu() accordingly. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_ctrl.c | 48 +++++++++++++++++++++++++++++++++++++- drivers/media/video/uvc/uvc_v4l2.c | 36 +--------------------------- drivers/media/video/uvc/uvcvideo.h | 4 ++-- 3 files changed, 50 insertions(+), 38 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c index f169f7736677..59f8a9ad3796 100644 --- a/drivers/media/video/uvc/uvc_ctrl.c +++ b/drivers/media/video/uvc/uvc_ctrl.c @@ -785,7 +785,7 @@ static void __uvc_find_control(struct uvc_entity *entity, __u32 v4l2_id, } } -struct uvc_control *uvc_find_control(struct uvc_video_chain *chain, +static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain, __u32 v4l2_id, struct uvc_control_mapping **mapping) { struct uvc_control *ctrl = NULL; @@ -944,6 +944,52 @@ done: return ret; } +/* + * Mapping V4L2 controls to UVC controls can be straighforward if done well. + * Most of the UVC controls exist in V4L2, and can be mapped directly. Some + * must be grouped (for instance the Red Balance, Blue Balance and Do White + * Balance V4L2 controls use the White Balance Component UVC control) or + * otherwise translated. The approach we take here is to use a translation + * table for the controls that can be mapped directly, and handle the others + * manually. + */ +int uvc_query_v4l2_menu(struct uvc_video_chain *chain, + struct v4l2_querymenu *query_menu) +{ + struct uvc_menu_info *menu_info; + struct uvc_control_mapping *mapping; + struct uvc_control *ctrl; + u32 index = query_menu->index; + u32 id = query_menu->id; + int ret; + + memset(query_menu, 0, sizeof(*query_menu)); + query_menu->id = id; + query_menu->index = index; + + ret = mutex_lock_interruptible(&chain->ctrl_mutex); + if (ret < 0) + return -ERESTARTSYS; + + ctrl = uvc_find_control(chain, query_menu->id, &mapping); + if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) { + ret = -EINVAL; + goto done; + } + + if (query_menu->index >= mapping->menu_count) { + ret = -EINVAL; + goto done; + } + + menu_info = &mapping->menu_info[query_menu->index]; + strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name); + +done: + mutex_unlock(&chain->ctrl_mutex); + return ret; +} + /* -------------------------------------------------------------------------- * Control transactions diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 6d15de9b5204..0f865e97cf48 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -100,40 +100,6 @@ done: * V4L2 interface */ -/* - * Mapping V4L2 controls to UVC controls can be straighforward if done well. - * Most of the UVC controls exist in V4L2, and can be mapped directly. Some - * must be grouped (for instance the Red Balance, Blue Balance and Do White - * Balance V4L2 controls use the White Balance Component UVC control) or - * otherwise translated. The approach we take here is to use a translation - * table for the controls that can be mapped directly, and handle the others - * manually. - */ -static int uvc_v4l2_query_menu(struct uvc_video_chain *chain, - struct v4l2_querymenu *query_menu) -{ - struct uvc_menu_info *menu_info; - struct uvc_control_mapping *mapping; - struct uvc_control *ctrl; - u32 index = query_menu->index; - u32 id = query_menu->id; - - ctrl = uvc_find_control(chain, query_menu->id, &mapping); - if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) - return -EINVAL; - - if (query_menu->index >= mapping->menu_count) - return -EINVAL; - - memset(query_menu, 0, sizeof(*query_menu)); - query_menu->id = id; - query_menu->index = index; - - menu_info = &mapping->menu_info[query_menu->index]; - strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name); - return 0; -} - /* * Find the frame interval closest to the requested frame interval for the * given frame format and size. This should be done by the device as part of @@ -624,7 +590,7 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) } case VIDIOC_QUERYMENU: - return uvc_v4l2_query_menu(chain, arg); + return uvc_query_v4l2_menu(chain, arg); case VIDIOC_G_EXT_CTRLS: { diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index d97cf6d6a4f9..45209245244b 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -606,10 +606,10 @@ extern int uvc_status_suspend(struct uvc_device *dev); extern int uvc_status_resume(struct uvc_device *dev); /* Controls */ -extern struct uvc_control *uvc_find_control(struct uvc_video_chain *chain, - __u32 v4l2_id, struct uvc_control_mapping **mapping); extern int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, struct v4l2_queryctrl *v4l2_ctrl); +extern int uvc_query_v4l2_menu(struct uvc_video_chain *chain, + struct v4l2_querymenu *query_menu); extern int uvc_ctrl_add_mapping(struct uvc_video_chain *chain, const struct uvc_control_mapping *mapping); -- cgit v1.2.3 From 8e815e1763b8d4e5adf0dc14bde8c55329cf95a8 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 21 Nov 2010 14:46:44 -0300 Subject: [media] uvcvideo: Move mutex lock/unlock inside uvc_free_buffers Callers outside uvc_queue.c should not be forced to lock/unlock the queue mutex manually. Move the mutex operations inside uvc_free_buffers(). Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_queue.c | 57 ++++++++++++++++++++++--------------- drivers/media/video/uvc/uvc_v4l2.c | 2 -- 2 files changed, 34 insertions(+), 25 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index ed6d5449741c..32c18229863b 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -89,6 +89,39 @@ void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type, queue->type = type; } +/* + * Free the video buffers. + * + * This function must be called with the queue lock held. + */ +static int __uvc_free_buffers(struct uvc_video_queue *queue) +{ + unsigned int i; + + for (i = 0; i < queue->count; ++i) { + if (queue->buffer[i].vma_use_count != 0) + return -EBUSY; + } + + if (queue->count) { + vfree(queue->mem); + queue->count = 0; + } + + return 0; +} + +int uvc_free_buffers(struct uvc_video_queue *queue) +{ + int ret; + + mutex_lock(&queue->mutex); + ret = __uvc_free_buffers(queue); + mutex_unlock(&queue->mutex); + + return ret; +} + /* * Allocate the video buffers. * @@ -110,7 +143,7 @@ int uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers, mutex_lock(&queue->mutex); - if ((ret = uvc_free_buffers(queue)) < 0) + if ((ret = __uvc_free_buffers(queue)) < 0) goto done; /* Bail out if no buffers should be allocated. */ @@ -151,28 +184,6 @@ done: return ret; } -/* - * Free the video buffers. - * - * This function must be called with the queue lock held. - */ -int uvc_free_buffers(struct uvc_video_queue *queue) -{ - unsigned int i; - - for (i = 0; i < queue->count; ++i) { - if (queue->buffer[i].vma_use_count != 0) - return -EBUSY; - } - - if (queue->count) { - vfree(queue->mem); - queue->count = 0; - } - - return 0; -} - /* * Check if buffers have been allocated. */ diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 0f865e97cf48..0fd9848bd9d7 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -494,11 +494,9 @@ static int uvc_v4l2_release(struct file *file) if (uvc_has_privileges(handle)) { uvc_video_enable(stream, 0); - mutex_lock(&stream->queue.mutex); if (uvc_free_buffers(&stream->queue) < 0) uvc_printk(KERN_ERR, "uvc_v4l2_release: Unable to " "free buffers.\n"); - mutex_unlock(&stream->queue.mutex); } /* Release the file handle. */ -- cgit v1.2.3 From 4aa275975beee41fd542a0f6df8cd0fee06089bf Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 21 Nov 2010 15:18:08 -0300 Subject: [media] uvcvideo: Move mmap() handler to uvc_queue.c The mmap() implementation belongs to the video buffers queue, move it there. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_queue.c | 76 +++++++++++++++++++++++++++++++++++++ drivers/media/video/uvc/uvc_v4l2.c | 67 +------------------------------- drivers/media/video/uvc/uvcvideo.h | 2 + 3 files changed, 79 insertions(+), 66 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index 32c18229863b..f14581bd707f 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -379,6 +379,82 @@ done: return ret; } +/* + * VMA operations. + */ +static void uvc_vm_open(struct vm_area_struct *vma) +{ + struct uvc_buffer *buffer = vma->vm_private_data; + buffer->vma_use_count++; +} + +static void uvc_vm_close(struct vm_area_struct *vma) +{ + struct uvc_buffer *buffer = vma->vm_private_data; + buffer->vma_use_count--; +} + +static const struct vm_operations_struct uvc_vm_ops = { + .open = uvc_vm_open, + .close = uvc_vm_close, +}; + +/* + * Memory-map a video buffer. + * + * This function implements video buffers memory mapping and is intended to be + * used by the device mmap handler. + */ +int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma) +{ + struct uvc_buffer *uninitialized_var(buffer); + struct page *page; + unsigned long addr, start, size; + unsigned int i; + int ret = 0; + + start = vma->vm_start; + size = vma->vm_end - vma->vm_start; + + mutex_lock(&queue->mutex); + + for (i = 0; i < queue->count; ++i) { + buffer = &queue->buffer[i]; + if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) + break; + } + + if (i == queue->count || size != queue->buf_size) { + ret = -EINVAL; + goto done; + } + + /* + * VM_IO marks the area as being an mmaped region for I/O to a + * device. It also prevents the region from being core dumped. + */ + vma->vm_flags |= VM_IO; + + addr = (unsigned long)queue->mem + buffer->buf.m.offset; + while (size > 0) { + page = vmalloc_to_page((void *)addr); + if ((ret = vm_insert_page(vma, start, page)) < 0) + goto done; + + start += PAGE_SIZE; + addr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + vma->vm_ops = &uvc_vm_ops; + vma->vm_private_data = buffer; + uvc_vm_open(vma); + +done: + mutex_unlock(&queue->mutex); + return ret; +} + /* * Poll the video queue. * diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 0fd9848bd9d7..07dd2357fbb9 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -1032,79 +1032,14 @@ static ssize_t uvc_v4l2_read(struct file *file, char __user *data, return -EINVAL; } -/* - * VMA operations. - */ -static void uvc_vm_open(struct vm_area_struct *vma) -{ - struct uvc_buffer *buffer = vma->vm_private_data; - buffer->vma_use_count++; -} - -static void uvc_vm_close(struct vm_area_struct *vma) -{ - struct uvc_buffer *buffer = vma->vm_private_data; - buffer->vma_use_count--; -} - -static const struct vm_operations_struct uvc_vm_ops = { - .open = uvc_vm_open, - .close = uvc_vm_close, -}; - static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma) { struct uvc_fh *handle = file->private_data; struct uvc_streaming *stream = handle->stream; - struct uvc_video_queue *queue = &stream->queue; - struct uvc_buffer *uninitialized_var(buffer); - struct page *page; - unsigned long addr, start, size; - unsigned int i; - int ret = 0; uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_mmap\n"); - start = vma->vm_start; - size = vma->vm_end - vma->vm_start; - - mutex_lock(&queue->mutex); - - for (i = 0; i < queue->count; ++i) { - buffer = &queue->buffer[i]; - if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) - break; - } - - if (i == queue->count || size != queue->buf_size) { - ret = -EINVAL; - goto done; - } - - /* - * VM_IO marks the area as being an mmaped region for I/O to a - * device. It also prevents the region from being core dumped. - */ - vma->vm_flags |= VM_IO; - - addr = (unsigned long)queue->mem + buffer->buf.m.offset; - while (size > 0) { - page = vmalloc_to_page((void *)addr); - if ((ret = vm_insert_page(vma, start, page)) < 0) - goto done; - - start += PAGE_SIZE; - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - vma->vm_ops = &uvc_vm_ops; - vma->vm_private_data = buffer; - uvc_vm_open(vma); - -done: - mutex_unlock(&queue->mutex); - return ret; + return uvc_queue_mmap(&stream->queue, vma); } static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait) diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index 45209245244b..ea893bc0df07 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -574,6 +574,8 @@ extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable); extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect); extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf); +extern int uvc_queue_mmap(struct uvc_video_queue *queue, + struct vm_area_struct *vma); extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, poll_table *wait); extern int uvc_queue_allocated(struct uvc_video_queue *queue); -- cgit v1.2.3 From 6947756dfcecc493062a46e77f6bf51dddb5be75 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 21 Nov 2010 13:36:34 -0300 Subject: [media] uvcvideo: Lock stream mutex when accessing format-related information The stream mutex protects access to the struct uvc_streaming ctrl, cur_format and cur_frame fields as well as to the hardware probe control. Lock it appropriately. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_v4l2.c | 78 ++++++++++++++++++++++++++----------- drivers/media/video/uvc/uvc_video.c | 3 -- drivers/media/video/uvc/uvcvideo.h | 4 +- 3 files changed, 58 insertions(+), 27 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 07dd2357fbb9..2f6dc6b97348 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -226,12 +226,14 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream, * developers test their webcams with the Linux driver as well as with * the Windows driver). */ + mutex_lock(&stream->mutex); if (stream->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS) probe->dwMaxVideoFrameSize = stream->ctrl.dwMaxVideoFrameSize; /* Probe the device. */ ret = uvc_probe_video(stream, probe); + mutex_unlock(&stream->mutex); if (ret < 0) goto done; @@ -255,14 +257,21 @@ done: static int uvc_v4l2_get_format(struct uvc_streaming *stream, struct v4l2_format *fmt) { - struct uvc_format *format = stream->cur_format; - struct uvc_frame *frame = stream->cur_frame; + struct uvc_format *format; + struct uvc_frame *frame; + int ret = 0; if (fmt->type != stream->type) return -EINVAL; - if (format == NULL || frame == NULL) - return -EINVAL; + mutex_lock(&stream->mutex); + format = stream->cur_format; + frame = stream->cur_frame; + + if (format == NULL || frame == NULL) { + ret = -EINVAL; + goto done; + } fmt->fmt.pix.pixelformat = format->fcc; fmt->fmt.pix.width = frame->wWidth; @@ -273,7 +282,9 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream, fmt->fmt.pix.colorspace = format->colorspace; fmt->fmt.pix.priv = 0; - return 0; +done: + mutex_unlock(&stream->mutex); + return ret; } static int uvc_v4l2_set_format(struct uvc_streaming *stream, @@ -287,18 +298,24 @@ static int uvc_v4l2_set_format(struct uvc_streaming *stream, if (fmt->type != stream->type) return -EINVAL; - if (uvc_queue_allocated(&stream->queue)) - return -EBUSY; - ret = uvc_v4l2_try_format(stream, fmt, &probe, &format, &frame); if (ret < 0) return ret; + mutex_lock(&stream->mutex); + + if (uvc_queue_allocated(&stream->queue)) { + ret = -EBUSY; + goto done; + } + memcpy(&stream->ctrl, &probe, sizeof probe); stream->cur_format = format; stream->cur_frame = frame; - return 0; +done: + mutex_unlock(&stream->mutex); + return ret; } static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream, @@ -309,7 +326,10 @@ static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream, if (parm->type != stream->type) return -EINVAL; + mutex_lock(&stream->mutex); numerator = stream->ctrl.dwFrameInterval; + mutex_unlock(&stream->mutex); + denominator = 10000000; uvc_simplify_fraction(&numerator, &denominator, 8, 333); @@ -336,7 +356,6 @@ static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream, static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream, struct v4l2_streamparm *parm) { - struct uvc_frame *frame = stream->cur_frame; struct uvc_streaming_control probe; struct v4l2_fract timeperframe; uint32_t interval; @@ -345,28 +364,36 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream, if (parm->type != stream->type) return -EINVAL; - if (uvc_queue_streaming(&stream->queue)) - return -EBUSY; - if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) timeperframe = parm->parm.capture.timeperframe; else timeperframe = parm->parm.output.timeperframe; - memcpy(&probe, &stream->ctrl, sizeof probe); interval = uvc_fraction_to_interval(timeperframe.numerator, timeperframe.denominator); - uvc_trace(UVC_TRACE_FORMAT, "Setting frame interval to %u/%u (%u).\n", timeperframe.numerator, timeperframe.denominator, interval); - probe.dwFrameInterval = uvc_try_frame_interval(frame, interval); + + mutex_lock(&stream->mutex); + + if (uvc_queue_streaming(&stream->queue)) { + mutex_unlock(&stream->mutex); + return -EBUSY; + } + + memcpy(&probe, &stream->ctrl, sizeof probe); + probe.dwFrameInterval = + uvc_try_frame_interval(stream->cur_frame, interval); /* Probe the device with the new settings. */ ret = uvc_probe_video(stream, &probe); - if (ret < 0) + if (ret < 0) { + mutex_unlock(&stream->mutex); return ret; + } memcpy(&stream->ctrl, &probe, sizeof probe); + mutex_unlock(&stream->mutex); /* Return the actual frame period. */ timeperframe.numerator = probe.dwFrameInterval; @@ -869,15 +896,17 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) case VIDIOC_CROPCAP: { struct v4l2_cropcap *ccap = arg; - struct uvc_frame *frame = stream->cur_frame; if (ccap->type != stream->type) return -EINVAL; ccap->bounds.left = 0; ccap->bounds.top = 0; - ccap->bounds.width = frame->wWidth; - ccap->bounds.height = frame->wHeight; + + mutex_lock(&stream->mutex); + ccap->bounds.width = stream->cur_frame->wWidth; + ccap->bounds.height = stream->cur_frame->wHeight; + mutex_unlock(&stream->mutex); ccap->defrect = ccap->bounds; @@ -894,8 +923,6 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) case VIDIOC_REQBUFS: { struct v4l2_requestbuffers *rb = arg; - unsigned int bufsize = - stream->ctrl.dwMaxVideoFrameSize; if (rb->type != stream->type || rb->memory != V4L2_MEMORY_MMAP) @@ -904,7 +931,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if ((ret = uvc_acquire_privileges(handle)) < 0) return ret; - ret = uvc_alloc_buffers(&stream->queue, rb->count, bufsize); + mutex_lock(&stream->mutex); + ret = uvc_alloc_buffers(&stream->queue, rb->count, + stream->ctrl.dwMaxVideoFrameSize); + mutex_unlock(&stream->mutex); if (ret < 0) return ret; @@ -952,7 +982,9 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (!uvc_has_privileges(handle)) return -EBUSY; + mutex_lock(&stream->mutex); ret = uvc_video_enable(stream, 1); + mutex_unlock(&stream->mutex); if (ret < 0) return ret; break; diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index 5555f0102838..5673d673504b 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -293,8 +293,6 @@ int uvc_probe_video(struct uvc_streaming *stream, unsigned int i; int ret; - mutex_lock(&stream->mutex); - /* Perform probing. The device should adjust the requested values * according to its capabilities. However, some devices, namely the * first generation UVC Logitech webcams, don't implement the Video @@ -346,7 +344,6 @@ int uvc_probe_video(struct uvc_streaming *stream, } done: - mutex_unlock(&stream->mutex); return ret; } diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index ea893bc0df07..45f01e7e13d2 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -436,7 +436,9 @@ struct uvc_streaming { struct uvc_streaming_control ctrl; struct uvc_format *cur_format; struct uvc_frame *cur_frame; - + /* Protect access to ctrl, cur_format, cur_frame and hardware video + * probe control. + */ struct mutex mutex; unsigned int frozen : 1; -- cgit v1.2.3 From 673eb9ff33e26ee6f4278cdab06749aef1bbef5b Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 21 Nov 2010 16:54:56 -0300 Subject: [media] uvcvideo: Convert to unlocked_ioctl The uvcvideo driver now locks all ioctls correctly on its own, the BKL isn't needed anymore. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_v4l2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 2f6dc6b97348..8cf61e8a634f 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -1088,7 +1088,7 @@ const struct v4l2_file_operations uvc_fops = { .owner = THIS_MODULE, .open = uvc_v4l2_open, .release = uvc_v4l2_release, - .ioctl = uvc_v4l2_ioctl, + .unlocked_ioctl = uvc_v4l2_ioctl, .read = uvc_v4l2_read, .mmap = uvc_v4l2_mmap, .poll = uvc_v4l2_poll, -- cgit v1.2.3 From a757ee2216211278680dd8ac869aabe7b4a9970d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 2 Dec 2010 01:57:03 -0200 Subject: [media] Don't export format_by_forcc on two different drivers Drivers should append their name on exported symbols, to avoid conflicts with allyesconfig: drivers/staging/built-in.o: In function `format_by_fourcc': /home/v4l/work_trees/linus/drivers/staging/cx25821/cx25821-video.c:96: multiple definition of `format_by_fourcc' drivers/media/built-in.o:/home/v4l/work_trees/linus/drivers/media/common/saa7146_video.c:88: first defined here Let's rename both occurences with a small shellscript: for i in drivers/staging/cx25821/*.[ch]; do sed s,format_by_fourcc,cx25821_format_by_fourcc,g <$i >a && mv a $i; done for i in drivers/media/common/saa7146*.[ch]; do sed s,format_by_fourcc,saa7146_format_by_fourcc,g <$i >a && mv a $i; done for i in include/media/saa7146*.[ch]; do sed s,format_by_fourcc,saa7146_format_by_fourcc,g <$i >a && mv a $i; done Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/saa7146_hlp.c | 8 ++++---- drivers/media/common/saa7146_video.c | 16 ++++++++-------- drivers/staging/cx25821/cx25821-video.c | 8 ++++---- drivers/staging/cx25821/cx25821-video.h | 2 +- include/media/saa7146.h | 2 +- 5 files changed, 18 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/media/common/saa7146_hlp.c b/drivers/media/common/saa7146_hlp.c index 05bde9ccb770..1d1d8d200755 100644 --- a/drivers/media/common/saa7146_hlp.c +++ b/drivers/media/common/saa7146_hlp.c @@ -558,7 +558,7 @@ static void saa7146_set_window(struct saa7146_dev *dev, int width, int height, e static void saa7146_set_position(struct saa7146_dev *dev, int w_x, int w_y, int w_height, enum v4l2_field field, u32 pixelformat) { struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *sfmt = format_by_fourcc(dev, pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev, pixelformat); int b_depth = vv->ov_fmt->depth; int b_bpl = vv->ov_fb.fmt.bytesperline; @@ -702,7 +702,7 @@ static int calculate_video_dma_grab_packed(struct saa7146_dev* dev, struct saa71 struct saa7146_vv *vv = dev->vv_data; struct saa7146_video_dma vdma1; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); int width = buf->fmt->width; int height = buf->fmt->height; @@ -827,7 +827,7 @@ static int calculate_video_dma_grab_planar(struct saa7146_dev* dev, struct saa71 struct saa7146_video_dma vdma2; struct saa7146_video_dma vdma3; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); int width = buf->fmt->width; int height = buf->fmt->height; @@ -994,7 +994,7 @@ static void program_capture_engine(struct saa7146_dev *dev, int planar) void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next) { - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); struct saa7146_vv *vv = dev->vv_data; u32 vdma1_prot_addr; diff --git a/drivers/media/common/saa7146_video.c b/drivers/media/common/saa7146_video.c index 741c5732b430..d246910129e8 100644 --- a/drivers/media/common/saa7146_video.c +++ b/drivers/media/common/saa7146_video.c @@ -84,7 +84,7 @@ static struct saa7146_format formats[] = { static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); -struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc) +struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) { int i, j = NUM_FORMATS; @@ -266,7 +266,7 @@ static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *bu struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); struct scatterlist *list = dma->sglist; int length = dma->sglen; - struct saa7146_format *sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); DEB_EE(("dev:%p, buf:%p, sg_len:%d\n",dev,buf,length)); @@ -408,7 +408,7 @@ static int video_begin(struct saa7146_fh *fh) } } - fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); /* we need to have a valid format set here */ BUG_ON(NULL == fmt); @@ -460,7 +460,7 @@ static int video_end(struct saa7146_fh *fh, struct file *file) return -EBUSY; } - fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); /* we need to have a valid format set here */ BUG_ON(NULL == fmt); @@ -536,7 +536,7 @@ static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *f return -EPERM; /* check args */ - fmt = format_by_fourcc(dev, fb->fmt.pixelformat); + fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); if (NULL == fmt) return -EINVAL; @@ -760,7 +760,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_forma DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh)); - fmt = format_by_fourcc(dev, f->fmt.pix.pixelformat); + fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); if (NULL == fmt) return -EINVAL; @@ -1264,7 +1264,7 @@ static int buffer_prepare(struct videobuf_queue *q, buf->fmt = &fh->video_fmt; buf->vb.field = fh->video_fmt.field; - sfmt = format_by_fourcc(dev,buf->fmt->pixelformat); + sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); release_all_pagetables(dev, buf); if( 0 != IS_PLANAR(sfmt->trans)) { @@ -1378,7 +1378,7 @@ static int video_open(struct saa7146_dev *dev, struct file *file) fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24; fh->video_fmt.bytesperline = 0; fh->video_fmt.field = V4L2_FIELD_ANY; - sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat); + sfmt = saa7146_format_by_fourcc(dev,fh->video_fmt.pixelformat); fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8; videobuf_queue_sg_init(&fh->video_q, &video_qops, diff --git a/drivers/staging/cx25821/cx25821-video.c b/drivers/staging/cx25821/cx25821-video.c index e7f1d5778cec..52389308f333 100644 --- a/drivers/staging/cx25821/cx25821-video.c +++ b/drivers/staging/cx25821/cx25821-video.c @@ -92,7 +92,7 @@ int cx25821_get_format_size(void) return ARRAY_SIZE(formats); } -struct cx25821_fmt *format_by_fourcc(unsigned int fourcc) +struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) { unsigned int i; @@ -848,7 +848,7 @@ static int video_open(struct file *file) pix_format = (dev->channels[ch_id].pixel_formats == PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV; - fh->fmt = format_by_fourcc(pix_format); + fh->fmt = cx25821_format_by_fourcc(pix_format); v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio); @@ -1010,7 +1010,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, if (0 != err) return err; - fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); fh->vidq.field = f->fmt.pix.field; /* check if width and height is valid based on set standard */ @@ -1119,7 +1119,7 @@ int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fo enum v4l2_field field; unsigned int maxw, maxh; - fmt = format_by_fourcc(f->fmt.pix.pixelformat); + fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); if (NULL == fmt) return -EINVAL; diff --git a/drivers/staging/cx25821/cx25821-video.h b/drivers/staging/cx25821/cx25821-video.h index cc6034b1a95d..a2415d33235b 100644 --- a/drivers/staging/cx25821/cx25821-video.h +++ b/drivers/staging/cx25821/cx25821-video.h @@ -87,7 +87,7 @@ extern unsigned int vid_limit; #define FORMAT_FLAGS_PACKED 0x01 extern struct cx25821_fmt formats[]; -extern struct cx25821_fmt *format_by_fourcc(unsigned int fourcc); +extern struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc); extern struct cx25821_data timeout_data[MAX_VID_CHANNEL_NUM]; extern void cx25821_dump_video_queue(struct cx25821_dev *dev, diff --git a/include/media/saa7146.h b/include/media/saa7146.h index 7a9f76ecbbbd..ac7ce00f39cf 100644 --- a/include/media/saa7146.h +++ b/include/media/saa7146.h @@ -161,7 +161,7 @@ extern struct list_head saa7146_devices; extern struct mutex saa7146_devices_lock; int saa7146_register_extension(struct saa7146_extension*); int saa7146_unregister_extension(struct saa7146_extension*); -struct saa7146_format* format_by_fourcc(struct saa7146_dev *dev, int fourcc); +struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc); int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt); void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt); int saa7146_pgtable_build_single(struct pci_dev *pci, struct saa7146_pgtable *pt, struct scatterlist *list, int length ); -- cgit v1.2.3 From f8bbeabc34aa945ab4275abc9a4dfde0aea798ca Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 9 Dec 2010 10:29:00 -0800 Subject: xhci: Fix issue with port array setup and buggy hosts. Fix two bugs with the port array setup. The first bug will only show up with broken xHCI hosts with Extended Capabilities registers that have duplicate port speed entries for the same port. The idea with the original code was to set the port_array entry to -1 if the duplicate port speed entry said the port was a different speed than the original port speed entry. That would mean that later, the port would not be exposed to the USB core. Unfortunately, I forgot a continue statement, and the port_array entry would just be overwritten in the next line. The second bug would happen if there are conflicting port speed registers (so that some entry in port_array is -1), or one of the hardware port registers was not described in the port speed registers (so that some entry in port_array is 0). The code that sets up the usb2_ports array would accidentally claim those ports. That wouldn't really cause any user-visible issues, but it is a bug. This patch should go into the stable trees that have the port array and USB 3.0 port disabling prevention patches. Signed-off-by: Sarah Sharp Cc: stable@kernel.org --- drivers/usb/host/xhci-mem.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 0fae58ef8afe..1d0f45f0e7a6 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1680,6 +1680,7 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, xhci->port_array[i] = (u8) -1; } /* FIXME: Should we disable the port? */ + continue; } xhci->port_array[i] = major_revision; if (major_revision == 0x03) @@ -1758,16 +1759,20 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) return -ENOMEM; port_index = 0; - for (i = 0; i < num_ports; i++) - if (xhci->port_array[i] != 0x03) { - xhci->usb2_ports[port_index] = - &xhci->op_regs->port_status_base + - NUM_PORT_REGS*i; - xhci_dbg(xhci, "USB 2.0 port at index %u, " - "addr = %p\n", i, - xhci->usb2_ports[port_index]); - port_index++; - } + for (i = 0; i < num_ports; i++) { + if (xhci->port_array[i] == 0x03 || + xhci->port_array[i] == 0 || + xhci->port_array[i] == -1) + continue; + + xhci->usb2_ports[port_index] = + &xhci->op_regs->port_status_base + + NUM_PORT_REGS*i; + xhci_dbg(xhci, "USB 2.0 port at index %u, " + "addr = %p\n", i, + xhci->usb2_ports[port_index]); + port_index++; + } } if (xhci->num_usb3_ports) { xhci->usb3_ports = kmalloc(sizeof(*xhci->usb3_ports)* -- cgit v1.2.3 From 5363cdc3c5da9bd431552cf5989ab481596f0c6d Mon Sep 17 00:00:00 2001 From: Florian Faber Date: Wed, 1 Dec 2010 10:11:08 +0100 Subject: USB: ftdi_sio: Add D.O.Tec PID Add FTDI PID to identify D.O.Tec devices correctly. Signed-off-by: Florian Faber Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 5 +++++ 2 files changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 6a50965e23f2..2dec50013528 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -796,6 +796,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LOGBOOKML_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_LS_LOGBOOK_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCIENCESCOPE_HS_LOGBOOK_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_DOTEC_PID) }, { USB_DEVICE(QIHARDWARE_VID, MILKYMISTONE_JTAGSERIAL_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, { }, /* Optional parameter entry */ diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 1286f1e23d8c..bf0867285481 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -1080,6 +1080,11 @@ #define MJSG_XM_RADIO_PID 0x937A #define MJSG_HD_RADIO_PID 0x937C +/* + * D.O.Tec products (http://www.directout.eu) + */ +#define FTDI_DOTEC_PID 0x9868 + /* * Xverve Signalyzer tools (http://www.signalyzer.com/) */ -- cgit v1.2.3 From 57a7872fa0f03e90be0fa224b9ea533f5b03ee4f Mon Sep 17 00:00:00 2001 From: Kevin Granade Date: Fri, 10 Dec 2010 23:04:02 -0800 Subject: Input: wacom - add another Bamboo Pen ID (0xd4) Add the features struct and device table entry to enable yet another version of Wacom Bamboo Pen (CTL460, Product ID 0xD4). Signed-off-by: Kevin Granade Acked-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 4852b440960a..435b0af401e4 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1436,6 +1436,8 @@ static struct wacom_features wacom_features_0xD2 = { "Wacom Bamboo Craft", WACOM_PKGLEN_BBFUN, 14720, 9200, 1023, 63, BAMBOO_PT }; static struct wacom_features wacom_features_0xD3 = { "Wacom Bamboo 2FG 6x8", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT }; +static const struct wacom_features wacom_features_0xD4 = + { "Wacom Bamboo Pen", WACOM_PKGLEN_BBFUN, 14720, 9200, 255, 63, BAMBOO_PT }; static struct wacom_features wacom_features_0xD8 = { "Wacom Bamboo Comic 2FG", WACOM_PKGLEN_BBFUN, 21648, 13530, 1023, 63, BAMBOO_PT }; static struct wacom_features wacom_features_0xDA = @@ -1510,6 +1512,7 @@ const struct usb_device_id wacom_ids[] = { { USB_DEVICE_WACOM(0xD1) }, { USB_DEVICE_WACOM(0xD2) }, { USB_DEVICE_WACOM(0xD3) }, + { USB_DEVICE_WACOM(0xD4) }, { USB_DEVICE_WACOM(0xD8) }, { USB_DEVICE_WACOM(0xDA) }, { USB_DEVICE_WACOM(0xDB) }, -- cgit v1.2.3 From 254e42006c893f45bca48f313536fcba12206418 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Mon, 6 Dec 2010 12:26:30 -0800 Subject: x86, vt-d: Quirk for masking vtd spec errors to platform error handling logic On platforms with Intel 7500 chipset, there were some reports of system hang/NMI's during kexec/kdump in the presence of interrupt-remapping enabled. During kdump, there is a window where the devices might be still using old kernel's interrupt information, while the kdump kernel is coming up. This can cause vt-d faults as the interrupt configuration from the old kernel map to null IRTE entries in the new kernel etc. (with out interrupt-remapping enabled, we still have the same issue but in this case we will see benign spurious interrupt hit the new kernel). Based on platform config settings, these platforms seem to generate NMI/SMI when a vt-d fault happens and there were reports that the resulting SMI causes the system to hang. Fix it by masking vt-d spec defined errors to platform error reporting logic. VT-d spec related errors are already handled by the VT-d OS code, so need to report the same error through other channels. Signed-off-by: Suresh Siddha LKML-Reference: <1291667190.2675.8.camel@sbsiddha-MOBL3.sc.intel.com> Cc: stable@kernel.org [v2.6.32+] Reported-by: Max Asbock Reported-and-tested-by: Takao Indoh Acked-by: Chris Wright Acked-by: Kenji Kaneshige Signed-off-by: H. Peter Anvin --- drivers/pci/quirks.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 6f9350cabbd5..36191edd6d51 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2764,6 +2764,29 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_m DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); #endif /*CONFIG_MMC_RICOH_MMC*/ +#if defined(CONFIG_DMAR) || defined(CONFIG_INTR_REMAP) +#define VTUNCERRMSK_REG 0x1ac +#define VTD_MSK_SPEC_ERRORS (1 << 31) +/* + * This is a quirk for masking vt-d spec defined errors to platform error + * handling logic. With out this, platforms using Intel 7500, 5500 chipsets + * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based + * on the RAS config settings of the platform) when a vt-d fault happens. + * The resulting SMI caused the system to hang. + * + * VT-d spec related errors are already handled by the VT-d OS code, so no + * need to report the same error through other channels. + */ +static void vtd_mask_spec_errors(struct pci_dev *dev) +{ + u32 word; + + pci_read_config_dword(dev, VTUNCERRMSK_REG, &word); + pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); +#endif static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end) -- cgit v1.2.3 From 7f99d946e71e71d484b7543b49e990508e70d0c0 Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Tue, 30 Nov 2010 22:22:29 -0800 Subject: x86, vt-d: Handle previous faults after enabling fault handling Fault handling is getting enabled after enabling the interrupt-remapping (as the success of interrupt-remapping can affect the apic mode and hence the fault handling mode). Hence there can potentially be some faults between the window of enabling interrupt-remapping in the vt-d and the fault-handling of the vt-d units. Handle any previous faults after enabling the vt-d fault handling. For v2.6.38 cleanup, need to check if we can remove the dmar_fault() in the enable_intr_remapping() and see if we can enable fault handling along with enabling intr-remapping. Signed-off-by: Suresh Siddha LKML-Reference: <20101201062244.630417138@intel.com> Cc: stable@kernel.org [v2.6.32+] Acked-by: Chris Wright Signed-off-by: H. Peter Anvin --- drivers/pci/dmar.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index 0157708d474d..09933eb9126b 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -1417,6 +1417,11 @@ int __init enable_drhd_fault_handling(void) (unsigned long long)drhd->reg_base_addr, ret); return -1; } + + /* + * Clear any previous faults. + */ + dmar_fault(iommu->irq, iommu); } return 0; -- cgit v1.2.3 From ab4e0192196b8d4e43a3945742d4996da934a86f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 14 Dec 2010 23:53:21 -0800 Subject: Input: define separate EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 The desire to keep old names for the EVIOCGKEYCODE/EVIOCSKEYCODE while extending them to support large scancodes was a mistake. While we tried to keep ABI intact (and we succeeded in doing that, programs compiled on older kernels will work on newer ones) there is still a problem with recompiling existing software with newer kernel headers. New kernel headers will supply updated ioctl numbers and kernel will expect that userspace will use struct input_keymap_entry to set and retrieve keymap data. But since the names of ioctls are still the same userspace will happily compile even if not adjusted to make use of the new structure and will start miraculously fail in the field. To avoid this issue let's revert EVIOCGKEYCODE/EVIOCSKEYCODE definitions and add EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 so that userspace can explicitly select the style of ioctls it wants to employ. Reviewed-by: Henrik Rydberg Acked-by: Jarod Wilson Acked-by: Mauro Carvalho Chehab Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 113 ++++++++++++++++++++++++++------------------------ include/linux/input.h | 6 ++- 2 files changed, 62 insertions(+), 57 deletions(-) (limited to 'drivers') diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index e3f7fc6f9565..68f09a868434 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -534,76 +534,73 @@ static int handle_eviocgbit(struct input_dev *dev, } #undef OLD_KEY_MAX -static int evdev_handle_get_keycode(struct input_dev *dev, - void __user *p, size_t size) +static int evdev_handle_get_keycode(struct input_dev *dev, void __user *p) { - struct input_keymap_entry ke; + struct input_keymap_entry ke = { + .len = sizeof(unsigned int), + .flags = 0, + }; + int __user *ip = (int __user *)p; int error; - memset(&ke, 0, sizeof(ke)); - - if (size == sizeof(unsigned int[2])) { - /* legacy case */ - int __user *ip = (int __user *)p; + /* legacy case */ + if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) + return -EFAULT; - if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) - return -EFAULT; + error = input_get_keycode(dev, &ke); + if (error) + return error; - ke.len = sizeof(unsigned int); - ke.flags = 0; + if (put_user(ke.keycode, ip + 1)) + return -EFAULT; - error = input_get_keycode(dev, &ke); - if (error) - return error; + return 0; +} - if (put_user(ke.keycode, ip + 1)) - return -EFAULT; +static int evdev_handle_get_keycode_v2(struct input_dev *dev, void __user *p) +{ + struct input_keymap_entry ke; + int error; - } else { - size = min(size, sizeof(ke)); + if (copy_from_user(&ke, p, sizeof(ke))) + return -EFAULT; - if (copy_from_user(&ke, p, size)) - return -EFAULT; + error = input_get_keycode(dev, &ke); + if (error) + return error; - error = input_get_keycode(dev, &ke); - if (error) - return error; + if (copy_to_user(p, &ke, sizeof(ke))) + return -EFAULT; - if (copy_to_user(p, &ke, size)) - return -EFAULT; - } return 0; } -static int evdev_handle_set_keycode(struct input_dev *dev, - void __user *p, size_t size) +static int evdev_handle_set_keycode(struct input_dev *dev, void __user *p) { - struct input_keymap_entry ke; - - memset(&ke, 0, sizeof(ke)); + struct input_keymap_entry ke = { + .len = sizeof(unsigned int), + .flags = 0, + }; + int __user *ip = (int __user *)p; - if (size == sizeof(unsigned int[2])) { - /* legacy case */ - int __user *ip = (int __user *)p; + if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) + return -EFAULT; - if (copy_from_user(ke.scancode, p, sizeof(unsigned int))) - return -EFAULT; + if (get_user(ke.keycode, ip + 1)) + return -EFAULT; - if (get_user(ke.keycode, ip + 1)) - return -EFAULT; + return input_set_keycode(dev, &ke); +} - ke.len = sizeof(unsigned int); - ke.flags = 0; +static int evdev_handle_set_keycode_v2(struct input_dev *dev, void __user *p) +{ + struct input_keymap_entry ke; - } else { - size = min(size, sizeof(ke)); + if (copy_from_user(&ke, p, sizeof(ke))) + return -EFAULT; - if (copy_from_user(&ke, p, size)) - return -EFAULT; - - if (ke.len > sizeof(ke.scancode)) - return -EINVAL; - } + if (ke.len > sizeof(ke.scancode)) + return -EINVAL; return input_set_keycode(dev, &ke); } @@ -669,6 +666,18 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, return evdev_grab(evdev, client); else return evdev_ungrab(evdev, client); + + case EVIOCGKEYCODE: + return evdev_handle_get_keycode(dev, p); + + case EVIOCSKEYCODE: + return evdev_handle_set_keycode(dev, p); + + case EVIOCGKEYCODE_V2: + return evdev_handle_get_keycode_v2(dev, p); + + case EVIOCSKEYCODE_V2: + return evdev_handle_set_keycode_v2(dev, p); } size = _IOC_SIZE(cmd); @@ -708,12 +717,6 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, return -EFAULT; return error; - - case EVIOC_MASK_SIZE(EVIOCGKEYCODE): - return evdev_handle_get_keycode(dev, p, size); - - case EVIOC_MASK_SIZE(EVIOCSKEYCODE): - return evdev_handle_set_keycode(dev, p, size); } /* Multi-number variable-length handlers */ diff --git a/include/linux/input.h b/include/linux/input.h index a8af21d42bc1..9777668883be 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -104,8 +104,10 @@ struct input_keymap_entry { #define EVIOCGREP _IOR('E', 0x03, unsigned int[2]) /* get repeat settings */ #define EVIOCSREP _IOW('E', 0x03, unsigned int[2]) /* set repeat settings */ -#define EVIOCGKEYCODE _IOR('E', 0x04, struct input_keymap_entry) /* get keycode */ -#define EVIOCSKEYCODE _IOW('E', 0x04, struct input_keymap_entry) /* set keycode */ +#define EVIOCGKEYCODE _IOR('E', 0x04, unsigned int[2]) /* get keycode */ +#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry) +#define EVIOCSKEYCODE _IOW('E', 0x04, unsigned int[2]) /* set keycode */ +#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry) #define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */ #define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */ -- cgit v1.2.3 From 4422c04bbb09f1864e2ce27296457f86d4167fe2 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 14 Dec 2010 14:16:59 +0200 Subject: OMAP: DSS: VRAM: Align start & size of vram to 2M Align the start address and size of VRAM area to 2M as per comments from Russell King: > > So, why SZ_2M? > > Firstly, that's the granularity which we allocate page tables - one > Linux page table covers 2MB of memory. We want to avoid creating page > tables for the main memory mapping as that increases TLB pressure through > the use of additional TLB entries, and more page table walks. > > Plus, we never used to allow the kernel's direct memory mapping to be > mapped at anything less than section size - this restriction has since > been lifted due to OMAP SRAM problems, but I'd rather we stuck with it > to ensure that we have proper behaviour from all parts of the system. > > Secondly, we don't want to end up with lots of fragmentation at the end > of the memory mapping as that'll reduce performance, not only by making > the pfn_valid() search more expensive. > > Emsuring a minimum allocation size and alignment makes sure that the > regions can be coalesced together into one block, and minimises run-time > expenses. > > So please, 2MB, or if you object, at the _very_ _least_ 1MB. But > definitely not PAGE_SIZE. Signed-off-by: Tomi Valkeinen Acked-by: Tony Lindgren --- drivers/video/omap2/vram.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c index 2fd7e5271be9..9441e2eb3dee 100644 --- a/drivers/video/omap2/vram.c +++ b/drivers/video/omap2/vram.c @@ -551,7 +551,7 @@ void __init omap_vram_reserve_sdram_memblock(void) if (!size) return; - size = PAGE_ALIGN(size); + size = ALIGN(size, SZ_2M); if (paddr) { if (paddr & ~PAGE_MASK) { @@ -576,7 +576,7 @@ void __init omap_vram_reserve_sdram_memblock(void) return; } } else { - paddr = memblock_alloc(size, PAGE_SIZE); + paddr = memblock_alloc(size, SZ_2M); } memblock_free(paddr, size); -- cgit v1.2.3 From b99ddbf83c064382b145d2156cc819d1eb4fc54d Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 14 Dec 2010 14:39:06 +0200 Subject: OMAP: OMAPFB: disable old omapfb for OMAP4 builds Build fails when OMAP4 and FB_OMAP are defined: drivers/built-in.o: In function `omapfb_do_probe': drivers/video/omap/omapfb_main.c:1773: undefined reference to `omap2_int_ctrl' Old omapfb does not work on OMAP4, and never will. Change the omapfb build dependency so that old omapfb depends on OMAP1/2/3, fixing the build for plain OMAP4 builds. Reported-by: Russell King Signed-off-by: Tomi Valkeinen --- drivers/video/omap/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/video/omap/Kconfig b/drivers/video/omap/Kconfig index 455c6055325d..083c8fe53e24 100644 --- a/drivers/video/omap/Kconfig +++ b/drivers/video/omap/Kconfig @@ -1,7 +1,7 @@ config FB_OMAP tristate "OMAP frame buffer support (EXPERIMENTAL)" - depends on FB && ARCH_OMAP && (OMAP2_DSS = "n") - + depends on FB && (OMAP2_DSS = "n") + depends on ARCH_OMAP1 || ARCH_OMAP2 || ARCH_OMAP3 select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT -- cgit v1.2.3 From be7a7411d63ccad165d66fe8e0b11b2ee336159b Mon Sep 17 00:00:00 2001 From: Ken Mills Date: Mon, 13 Dec 2010 15:27:27 +0000 Subject: n_gsm: Fix message length handling when building header Fix message length handling when building header When the message length is greater than 127, the length field in the header is built incorrectly. According to the spec, when the length is less than 128 the length field is a single byte formatted as: bbbbbbb1. When it is greater than 127 then the field is two bytes of the format: bbbbbbb0 bbbbbbbb. Signed-off-by: Ken Mills Signed-off-by: Alan Cox Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_gsm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 81b46585edf7..2fc5cf27152a 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -716,8 +716,8 @@ static void __gsm_data_queue(struct gsm_dlci *dlci, struct gsm_msg *msg) if (msg->len < 128) *--dp = (msg->len << 1) | EA; else { - *--dp = ((msg->len & 127) << 1) | EA; - *--dp = (msg->len >> 6) & 0xfe; + *--dp = (msg->len >> 7); /* bits 7 - 15 */ + *--dp = (msg->len & 127) << 1; /* bits 0 - 6 */ } } -- cgit v1.2.3 From 093d804611b9a38fe59753b37c29f840518406a9 Mon Sep 17 00:00:00 2001 From: Ken Mills Date: Mon, 13 Dec 2010 15:28:03 +0000 Subject: n_gsm: gsm_data_alloc buffer allocation could fail and it is not being checked gsm_data_alloc buffer allocation could fail and it is not being checked. Add check for allocated buffer and return if the buffer allocation fails. Signed-off-by: Ken Mills Signed-off-by: Alan Cox Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_gsm.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 2fc5cf27152a..c5f8e5bda2b2 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -968,6 +968,8 @@ static void gsm_control_reply(struct gsm_mux *gsm, int cmd, u8 *data, { struct gsm_msg *msg; msg = gsm_data_alloc(gsm, 0, dlen + 2, gsm->ftype); + if (msg == NULL) + return; msg->data[0] = (cmd & 0xFE) << 1 | EA; /* Clear C/R */ msg->data[1] = (dlen << 1) | EA; memcpy(msg->data + 2, data, dlen); -- cgit v1.2.3 From 49c2fa08a77a7eefa4cbc73601f64984aceacfa7 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Wed, 8 Dec 2010 09:47:48 -0500 Subject: PCI: Update MCP55 quirk to not affect non HyperTransport variants MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I wrote this quirk awhile ago to properly setup MCP55 chips on hypertransport busses so that interrupts reached whatever cpu happend to boot the kdump kernel. while that works well, it was recently shown to me that a a non-hypertransport variant of the MCP55 exists, and on those system the register that this quirk manipulates causes hangs if you write to it. Since the quirk was only meant to handle errors found on MCP55 chips that have a HT interface, this patch adds a filter to make sure the chip is an HT capable before making the needed register adjustment. This lets the broken MCP55s work with kdump while not breaking the non-HT variants. Resolves https://bugzilla.kernel.org/show_bug.cgi?id=23952 Tested successfully by the reporter and myself. Cc: stable@kernel.org Reported-by: Mathieu Bérard Acked-by: Vivek Goyal Signed-off-by: Neil Horman Signed-off-by: Jesse Barnes --- drivers/pci/quirks.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 6f9350cabbd5..313c0bda0a8d 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2329,6 +2329,9 @@ static void __devinit nvbridge_check_legacy_irq_routing(struct pci_dev *dev) { u32 cfg; + if (!pci_find_capability(dev, PCI_CAP_ID_HT)) + return; + pci_read_config_dword(dev, 0x74, &cfg); if (cfg & ((1 << 2) | (1 << 15))) { -- cgit v1.2.3 From f4ce9084476dc518bfd0f35f62f4bd0a130893e0 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Thu, 16 Dec 2010 14:32:24 +0530 Subject: USB: core: Add input prompt and help text for USB_OTG config bd6882 commit (usb: gadget: fix Kconfig warning) removes the duplicate USB_OTG config from gadget/Kconfig. But does not copy the input prompt and help text to the original config defined in core/Kconfig. Add them now. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/Kconfig | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig index 9eed5b52d9de..bcc24779ba0e 100644 --- a/drivers/usb/core/Kconfig +++ b/drivers/usb/core/Kconfig @@ -107,11 +107,19 @@ config USB_SUSPEND If you are unsure about this, say N here. config USB_OTG - bool + bool "OTG support" depends on USB && EXPERIMENTAL depends on USB_SUSPEND default n - + help + The most notable feature of USB OTG is support for a + "Dual-Role" device, which can act as either a device + or a host. The initial role is decided by the type of + plug inserted and can be changed later when two dual + role devices talk to each other. + + Select this only if your board has Mini-AB/Micro-AB + connector. config USB_OTG_WHITELIST bool "Rely on OTG Targeted Peripherals List" -- cgit v1.2.3 From daba58035a044cae75488175a96cc18362a64518 Mon Sep 17 00:00:00 2001 From: Pavankumar Kondeti Date: Thu, 16 Dec 2010 14:32:25 +0530 Subject: USB: gadget: Remove suspended sysfs file before freeing cdev cdev struct is accessed in suspended sysfs show function. So remove sysfs file before freeing the cdev in composite_unbind. Signed-off-by: Pavankumar Kondeti Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 7b5cc16e4a0b..96413a240fdf 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1047,9 +1047,9 @@ composite_unbind(struct usb_gadget *gadget) kfree(cdev->req->buf); usb_ep_free_request(gadget->ep0, cdev->req); } + device_remove_file(&gadget->dev, &dev_attr_suspended); kfree(cdev); set_gadget_data(gadget, NULL); - device_remove_file(&gadget->dev, &dev_attr_suspended); composite = NULL; } -- cgit v1.2.3 From d73a9b3001f29271c2e9f2a806b05a431c5d9591 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Tue, 14 Dec 2010 10:16:49 -0500 Subject: USB: usb-storage: unusual_devs entry for the Samsung YP-CP3 Add an unusual_devs entry for the Samsung YP-CP3 MP4 player. User was getting the following errors in dmesg: usb 2-6: reset high speed USB device using ehci_hcd and address 2 usb 2-6: reset high speed USB device using ehci_hcd and address 2 usb 2-6: reset high speed USB device using ehci_hcd and address 2 usb 2-6: USB disconnect, address 2 sd 3:0:0:0: [sdb] Assuming drive cache: write through sdb:<2>ldm_validate_partition_table(): Disk read failed. Dev sdb: unable to read RDB block 0 unable to read partition table Signed-off-by: Vitaly Kuznetsov Acked-by: Alan Stern CC: Matthew Dharm CC: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 6ccdd3dd5259..fcc1e32ce256 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -481,6 +481,13 @@ UNUSUAL_DEV( 0x04e8, 0x507c, 0x0220, 0x0220, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_MAX_SECTORS_64), +/* Reported by Vitaly Kuznetsov */ +UNUSUAL_DEV( 0x04e8, 0x5122, 0x0000, 0x9999, + "Samsung", + "YP-CP3", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64 | US_FL_BULK_IGNORE_TAG), + /* Entry and supporting patch by Theodore Kilgore . * Device uses standards-violating 32-byte Bulk Command Block Wrappers and * reports itself as "Proprietary SCSI Bulk." Cf. device entry 0x084d:0x0011. -- cgit v1.2.3 From ecc1624a2fff45780959efbcb73ace18fdb3c58d Mon Sep 17 00:00:00 2001 From: Thomas Sailer Date: Tue, 14 Dec 2010 16:04:05 +0100 Subject: USB: misc: uss720.c: add another vendor/product ID Fabio Battaglia report that he has another cable that works with this driver, so this patch adds its vendor/product ID. Signed-off-by: Thomas Sailer Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/uss720.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 796e2f68f749..4ff21587ab03 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -3,7 +3,7 @@ /* * uss720.c -- USS720 USB Parport Cable. * - * Copyright (C) 1999, 2005 + * Copyright (C) 1999, 2005, 2010 * Thomas Sailer (t.sailer@alumni.ethz.ch) * * This program is free software; you can redistribute it and/or modify @@ -776,6 +776,8 @@ static const struct usb_device_id uss720_table[] = { { USB_DEVICE(0x0557, 0x2001) }, { USB_DEVICE(0x0729, 0x1284) }, { USB_DEVICE(0x1293, 0x0002) }, + { USB_DEVICE(0x1293, 0x0002) }, + { USB_DEVICE(0x050d, 0x0002) }, { } /* Terminating entry */ }; -- cgit v1.2.3 From dbb442b85a1d82f91cfe0524c4f9b3a5196a10ca Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 16 Dec 2010 15:52:30 -0800 Subject: Revert "USB: gadget: Allow function access to device ID data during bind()" This reverts commit 1ab83238740ff1e1773d5c13ecac43c60cf4aec4. Turns out this doesn't allow for the device ids to be overridden properly, so we need to revert the thing. Reported-by: Jef Driesen Cc: Robert Lukassen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/composite.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 96413a240fdf..8572dad5ecbb 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1107,14 +1107,6 @@ static int composite_bind(struct usb_gadget *gadget) */ usb_ep_autoconfig_reset(cdev->gadget); - /* standardized runtime overrides for device ID data */ - if (idVendor) - cdev->desc.idVendor = cpu_to_le16(idVendor); - if (idProduct) - cdev->desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); - /* composite gadget needs to assign strings for whole device (like * serial number), register function drivers, potentially update * power state and consumption, etc @@ -1126,6 +1118,14 @@ static int composite_bind(struct usb_gadget *gadget) cdev->desc = *composite->dev; cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket; + /* standardized runtime overrides for device ID data */ + if (idVendor) + cdev->desc.idVendor = cpu_to_le16(idVendor); + if (idProduct) + cdev->desc.idProduct = cpu_to_le16(idProduct); + if (bcdDevice) + cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); + /* stirng overrides */ if (iManufacturer || !cdev->desc.iManufacturer) { if (!iManufacturer && !composite->iManufacturer && -- cgit v1.2.3 From e692cb668fdd5a712c6ed2a2d6f2a36ee83997b4 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Wed, 1 Dec 2010 19:41:49 +0100 Subject: block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead When stacking devices, a request_queue is not always available. This forced us to have a no_cluster flag in the queue_limits that could be used as a carrier until the request_queue had been set up for a metadevice. There were several problems with that approach. First of all it was up to the stacking device to remember to set queue flag after stacking had completed. Also, the queue flag and the queue limits had to be kept in sync at all times. We got that wrong, which could lead to us issuing commands that went beyond the max scatterlist limit set by the driver. The proper fix is to avoid having two flags for tracking the same thing. We deprecate QUEUE_FLAG_CLUSTER and use the queue limit directly in the block layer merging functions. The queue_limit 'no_cluster' is turned into 'cluster' to avoid double negatives and to ease stacking. Clustering defaults to being enabled as before. The queue flag logic is removed from the stacking function, and explicitly setting the cluster flag is no longer necessary in DM and MD. Reported-by: Ed Lin Signed-off-by: Martin K. Petersen Acked-by: Mike Snitzer Cc: stable@kernel.org Signed-off-by: Jens Axboe --- block/blk-merge.c | 6 +++--- block/blk-settings.c | 25 ++----------------------- block/blk-sysfs.c | 2 +- drivers/md/dm-table.c | 5 ----- drivers/md/md.c | 3 --- drivers/scsi/scsi_lib.c | 3 +-- include/linux/blkdev.h | 9 ++++++--- 7 files changed, 13 insertions(+), 40 deletions(-) (limited to 'drivers') diff --git a/block/blk-merge.c b/block/blk-merge.c index 77b7c26df6b5..74bc4a768f32 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -21,7 +21,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, return 0; fbio = bio; - cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); + cluster = blk_queue_cluster(q); seg_size = 0; nr_phys_segs = 0; for_each_bio(bio) { @@ -87,7 +87,7 @@ EXPORT_SYMBOL(blk_recount_segments); static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio, struct bio *nxt) { - if (!test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags)) + if (!blk_queue_cluster(q)) return 0; if (bio->bi_seg_back_size + nxt->bi_seg_front_size > @@ -123,7 +123,7 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq, int nsegs, cluster; nsegs = 0; - cluster = test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); + cluster = blk_queue_cluster(q); /* * for each bio in rq diff --git a/block/blk-settings.c b/block/blk-settings.c index 701859fb9647..e55f5fc4ca22 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -126,7 +126,7 @@ void blk_set_default_limits(struct queue_limits *lim) lim->alignment_offset = 0; lim->io_opt = 0; lim->misaligned = 0; - lim->no_cluster = 0; + lim->cluster = 1; } EXPORT_SYMBOL(blk_set_default_limits); @@ -464,15 +464,6 @@ EXPORT_SYMBOL(blk_queue_io_opt); void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b) { blk_stack_limits(&t->limits, &b->limits, 0); - - if (!t->queue_lock) - WARN_ON_ONCE(1); - else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) { - unsigned long flags; - spin_lock_irqsave(t->queue_lock, flags); - queue_flag_clear(QUEUE_FLAG_CLUSTER, t); - spin_unlock_irqrestore(t->queue_lock, flags); - } } EXPORT_SYMBOL(blk_queue_stack_limits); @@ -545,7 +536,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->io_min = max(t->io_min, b->io_min); t->io_opt = lcm(t->io_opt, b->io_opt); - t->no_cluster |= b->no_cluster; + t->cluster &= b->cluster; t->discard_zeroes_data &= b->discard_zeroes_data; /* Physical block size a multiple of the logical block size? */ @@ -641,7 +632,6 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, sector_t offset) { struct request_queue *t = disk->queue; - struct request_queue *b = bdev_get_queue(bdev); if (bdev_stack_limits(&t->limits, bdev, offset >> 9) < 0) { char top[BDEVNAME_SIZE], bottom[BDEVNAME_SIZE]; @@ -652,17 +642,6 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, printk(KERN_NOTICE "%s: Warning: Device %s is misaligned\n", top, bottom); } - - if (!t->queue_lock) - WARN_ON_ONCE(1); - else if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) { - unsigned long flags; - - spin_lock_irqsave(t->queue_lock, flags); - if (!test_bit(QUEUE_FLAG_CLUSTER, &b->queue_flags)) - queue_flag_clear(QUEUE_FLAG_CLUSTER, t); - spin_unlock_irqrestore(t->queue_lock, flags); - } } EXPORT_SYMBOL(disk_stack_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 013457f47fdc..41fb69150b4d 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -119,7 +119,7 @@ static ssize_t queue_max_integrity_segments_show(struct request_queue *q, char * static ssize_t queue_max_segment_size_show(struct request_queue *q, char *page) { - if (test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags)) + if (blk_queue_cluster(q)) return queue_var_show(queue_max_segment_size(q), (page)); return queue_var_show(PAGE_CACHE_SIZE, (page)); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 90267f8d64ee..e2da1912a2cb 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1131,11 +1131,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, */ q->limits = *limits; - if (limits->no_cluster) - queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q); - else - queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q); - if (!dm_table_supports_discards(t)) queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q); else diff --git a/drivers/md/md.c b/drivers/md/md.c index 84c46a161927..52694d29663d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4296,9 +4296,6 @@ static int md_alloc(dev_t dev, char *name) goto abort; mddev->queue->queuedata = mddev; - /* Can be unlocked because the queue is new: no concurrency */ - queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, mddev->queue); - blk_queue_make_request(mddev->queue, md_make_request); disk = alloc_disk(1 << shift); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index eafeeda6e194..9d7ba07dc5ef 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1642,9 +1642,8 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost, blk_queue_max_segment_size(q, dma_get_max_seg_size(dev)); - /* New queue, no concurrency on queue_flags */ if (!shost->use_clustering) - queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q); + q->limits.cluster = 0; /* * set a reasonable default alignment on word boundaries: the diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aae86fd10c4f..95aeeeb49e8b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -250,7 +250,7 @@ struct queue_limits { unsigned char misaligned; unsigned char discard_misaligned; - unsigned char no_cluster; + unsigned char cluster; signed char discard_zeroes_data; }; @@ -380,7 +380,6 @@ struct request_queue #endif }; -#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */ #define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */ #define QUEUE_FLAG_STOPPED 2 /* queue is stopped */ #define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */ @@ -403,7 +402,6 @@ struct request_queue #define QUEUE_FLAG_SECDISCARD 19 /* supports SECDISCARD */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ - (1 << QUEUE_FLAG_CLUSTER) | \ (1 << QUEUE_FLAG_STACKABLE) | \ (1 << QUEUE_FLAG_SAME_COMP) | \ (1 << QUEUE_FLAG_ADD_RANDOM)) @@ -510,6 +508,11 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define rq_data_dir(rq) ((rq)->cmd_flags & 1) +static inline unsigned int blk_queue_cluster(struct request_queue *q) +{ + return q->limits.cluster; +} + /* * We regard a request as sync, if either a read or a sync write */ -- cgit v1.2.3 From 72d4cd9f38b5ed96b75df4c622be25e1c2648dd3 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 17 Dec 2010 08:34:20 +0100 Subject: block: max hardware sectors limit wrapper Implement blk_limits_max_hw_sectors() and make blk_queue_max_hw_sectors() a wrapper around it. DM needs this to avoid setting queue_limits' max_hw_sectors and max_sectors directly. dm_set_device_limits() now leverages blk_limits_max_hw_sectors() logic to establish the appropriate max_hw_sectors minimum (PAGE_SIZE). Fixes issue where DM was incorrectly setting max_sectors rather than max_hw_sectors (which caused dm_merge_bvec()'s max_hw_sectors check to be ineffective). Signed-off-by: Mike Snitzer Cc: stable@kernel.org Acked-by: Martin K. Petersen Signed-off-by: Jens Axboe --- block/blk-settings.c | 26 ++++++++++++++++++++------ drivers/md/dm-table.c | 5 ++--- include/linux/blkdev.h | 1 + 3 files changed, 23 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/block/blk-settings.c b/block/blk-settings.c index e55f5fc4ca22..36c8c1f2af18 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -229,8 +229,8 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 dma_mask) EXPORT_SYMBOL(blk_queue_bounce_limit); /** - * blk_queue_max_hw_sectors - set max sectors for a request for this queue - * @q: the request queue for the device + * blk_limits_max_hw_sectors - set hard and soft limit of max sectors for request + * @limits: the queue limits * @max_hw_sectors: max hardware sectors in the usual 512b unit * * Description: @@ -244,7 +244,7 @@ EXPORT_SYMBOL(blk_queue_bounce_limit); * per-device basis in /sys/block//queue/max_sectors_kb. * The soft limit can not exceed max_hw_sectors. **/ -void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors) +void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_sectors) { if ((max_hw_sectors << 9) < PAGE_CACHE_SIZE) { max_hw_sectors = 1 << (PAGE_CACHE_SHIFT - 9); @@ -252,9 +252,23 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto __func__, max_hw_sectors); } - q->limits.max_hw_sectors = max_hw_sectors; - q->limits.max_sectors = min_t(unsigned int, max_hw_sectors, - BLK_DEF_MAX_SECTORS); + limits->max_hw_sectors = max_hw_sectors; + limits->max_sectors = min_t(unsigned int, max_hw_sectors, + BLK_DEF_MAX_SECTORS); +} +EXPORT_SYMBOL(blk_limits_max_hw_sectors); + +/** + * blk_queue_max_hw_sectors - set max sectors for a request for this queue + * @q: the request queue for the device + * @max_hw_sectors: max hardware sectors in the usual 512b unit + * + * Description: + * See description for blk_limits_max_hw_sectors(). + **/ +void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors) +{ + blk_limits_max_hw_sectors(&q->limits, max_hw_sectors); } EXPORT_SYMBOL(blk_queue_max_hw_sectors); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index e2da1912a2cb..4d705cea0f8c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -517,9 +517,8 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, */ if (q->merge_bvec_fn && !ti->type->merge) - limits->max_sectors = - min_not_zero(limits->max_sectors, - (unsigned int) (PAGE_SIZE >> 9)); + blk_limits_max_hw_sectors(limits, + (unsigned int) (PAGE_SIZE >> 9)); return 0; } EXPORT_SYMBOL_GPL(dm_set_device_limits); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 95aeeeb49e8b..36ab42c9bb99 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -808,6 +808,7 @@ extern struct request_queue *blk_init_allocated_queue(struct request_queue *, extern void blk_cleanup_queue(struct request_queue *); extern void blk_queue_make_request(struct request_queue *, make_request_fn *); extern void blk_queue_bounce_limit(struct request_queue *, u64); +extern void blk_limits_max_hw_sectors(struct queue_limits *, unsigned int); extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int); extern void blk_queue_max_segments(struct request_queue *, unsigned short); extern void blk_queue_max_segment_size(struct request_queue *, unsigned int); -- cgit v1.2.3 From 0fc13c8995cd96f4123de400c71c223d80400ed9 Mon Sep 17 00:00:00 2001 From: "Stephen M. Cameron" Date: Fri, 17 Dec 2010 09:01:37 +0100 Subject: cciss: fix cciss_revalidate panic If you delete a logical drive, and then run BLKRRPART (e.g. via fdisk) on a logical drive which is "after" the deleted logical drive in the h->drv[] array, then cciss_revalidate panics because it will access the null pointer h->drv[x] when x hits the deleted drive. Signed-off-by: Stephen M. Cameron Cc: stable@kernel.org Signed-off-by: Jens Axboe --- drivers/block/cciss.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index f291587d753e..233e06c29ff4 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2834,6 +2834,8 @@ static int cciss_revalidate(struct gendisk *disk) InquiryData_struct *inq_buff = NULL; for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { + if (!h->drv[logvol]) + continue if (memcmp(h->drv[logvol]->LunID, drv->LunID, sizeof(drv->LunID)) == 0) { FOUND = 1; -- cgit v1.2.3 From 65ada547d68dc075aa06df92fe325bff07cbc606 Mon Sep 17 00:00:00 2001 From: Takashi YOSHII Date: Fri, 17 Dec 2010 07:25:09 +0000 Subject: clocksource: sh_cmt: Remove nested spinlock fix There are control flow that sh_cmt_set_next() does double spin-lock. The callers sh_cmt_{start,stop}() already have lock. But another callers sh_cmt_clock_event_{start,next}() does not. Now sh_cmt_set_next() does not lock by itself. All the callers should hold spin-lock before calling it. [damm@opensource.se: use __sh_cmt_set_next() to simplify code] [damm@opensource.se: added stable, suitable for v2.6.35 + v2.6.36] Cc: stable@kernel.org Signed-off-by: Takashi YOSHII Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- drivers/clocksource/sh_cmt.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index d68d3aa1814b..f975d24890fa 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -283,16 +283,21 @@ static void sh_cmt_clock_event_program_verify(struct sh_cmt_priv *p, } while (delay); } -static void sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta) +static void __sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta) { - unsigned long flags; - if (delta > p->max_match_value) dev_warn(&p->pdev->dev, "delta out of range\n"); - spin_lock_irqsave(&p->lock, flags); p->next_match_value = delta; sh_cmt_clock_event_program_verify(p, 0); +} + +static void sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta) +{ + unsigned long flags; + + spin_lock_irqsave(&p->lock, flags); + __sh_cmt_set_next(p, delta); spin_unlock_irqrestore(&p->lock, flags); } @@ -359,7 +364,7 @@ static int sh_cmt_start(struct sh_cmt_priv *p, unsigned long flag) /* setup timeout if no clockevent */ if ((flag == FLAG_CLOCKSOURCE) && (!(p->flags & FLAG_CLOCKEVENT))) - sh_cmt_set_next(p, p->max_match_value); + __sh_cmt_set_next(p, p->max_match_value); out: spin_unlock_irqrestore(&p->lock, flags); @@ -381,7 +386,7 @@ static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag) /* adjust the timeout to maximum if only clocksource left */ if ((flag == FLAG_CLOCKEVENT) && (p->flags & FLAG_CLOCKSOURCE)) - sh_cmt_set_next(p, p->max_match_value); + __sh_cmt_set_next(p, p->max_match_value); spin_unlock_irqrestore(&p->lock, flags); } -- cgit v1.2.3 From ac57cd5ee1935d1e60de86d75f13f377775f1c96 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:20 -0700 Subject: Revert "PCI: fix pci_bus_alloc_resource() hang, prefer positive decode" This reverts commit 82e3e767c21fef2b1b38868e20eb4e470a1e38e3. We're going back to considering bus resources in the order we found them (in _CRS order, when we're using _CRS), so we don't need to define any ordering. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- drivers/pci/bus.c | 70 +++++++++++++++++-------------------------------------- 1 file changed, 21 insertions(+), 49 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 003170ea2e39..5624db8c9ad0 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -64,57 +64,17 @@ void pci_bus_remove_resources(struct pci_bus *bus) } } -static bool pci_bus_resource_better(struct resource *res1, bool pos1, - struct resource *res2, bool pos2) -{ - /* If exactly one is positive decode, always prefer that one */ - if (pos1 != pos2) - return pos1 ? true : false; - - /* Prefer the one that contains the highest address */ - if (res1->end != res2->end) - return (res1->end > res2->end) ? true : false; - - /* Otherwise, prefer the one with highest "center of gravity" */ - if (res1->start != res2->start) - return (res1->start > res2->start) ? true : false; - - /* Otherwise, choose one arbitrarily (but consistently) */ - return (res1 > res2) ? true : false; -} - -static bool pci_bus_resource_positive(struct pci_bus *bus, struct resource *res) -{ - struct pci_bus_resource *bus_res; - - /* - * This relies on the fact that pci_bus.resource[] refers to P2P or - * CardBus bridge base/limit registers, which are always positively - * decoded. The pci_bus.resources list contains host bridge or - * subtractively decoded resources. - */ - list_for_each_entry(bus_res, &bus->resources, list) { - if (bus_res->res == res) - return (bus_res->flags & PCI_SUBTRACTIVE_DECODE) ? - false : true; - } - return true; -} - /* - * Find the next-best bus resource after the cursor "res". If the cursor is - * NULL, return the best resource. "Best" means that we prefer positive - * decode regions over subtractive decode, then those at higher addresses. + * Find the highest-address bus resource below the cursor "res". If the + * cursor is NULL, return the highest resource. */ static struct resource *pci_bus_find_resource_prev(struct pci_bus *bus, unsigned int type, struct resource *res) { - bool res_pos, r_pos, prev_pos = false; struct resource *r, *prev = NULL; int i; - res_pos = pci_bus_resource_positive(bus, res); pci_bus_for_each_resource(bus, r, i) { if (!r) continue; @@ -122,14 +82,26 @@ static struct resource *pci_bus_find_resource_prev(struct pci_bus *bus, if ((r->flags & IORESOURCE_TYPE_BITS) != type) continue; - r_pos = pci_bus_resource_positive(bus, r); - if (!res || pci_bus_resource_better(res, res_pos, r, r_pos)) { - if (!prev || pci_bus_resource_better(r, r_pos, - prev, prev_pos)) { - prev = r; - prev_pos = r_pos; - } + /* If this resource is at or past the cursor, skip it */ + if (res) { + if (r == res) + continue; + if (r->end > res->end) + continue; + if (r->end == res->end && r->start > res->start) + continue; } + + if (!prev) + prev = r; + + /* + * A small resource is higher than a large one that ends at + * the same address. + */ + if (r->end > prev->end || + (r->end == prev->end && r->start > prev->start)) + prev = r; } return prev; -- cgit v1.2.3 From 6db45b76eaa08133187f2cb44d496de7e9503aa8 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 16 Dec 2010 10:38:36 -0700 Subject: Revert "PCI: allocate bus resources from the top down" This reverts commit b126b4703afa4010b161784a43650337676dd03b. We're going back to the old behavior of allocating from bus resources in _CRS order. Acked-by: H. Peter Anvin Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- drivers/pci/bus.c | 53 +++++------------------------------------------------ 1 file changed, 5 insertions(+), 48 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 5624db8c9ad0..69546e9213dd 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -64,49 +64,6 @@ void pci_bus_remove_resources(struct pci_bus *bus) } } -/* - * Find the highest-address bus resource below the cursor "res". If the - * cursor is NULL, return the highest resource. - */ -static struct resource *pci_bus_find_resource_prev(struct pci_bus *bus, - unsigned int type, - struct resource *res) -{ - struct resource *r, *prev = NULL; - int i; - - pci_bus_for_each_resource(bus, r, i) { - if (!r) - continue; - - if ((r->flags & IORESOURCE_TYPE_BITS) != type) - continue; - - /* If this resource is at or past the cursor, skip it */ - if (res) { - if (r == res) - continue; - if (r->end > res->end) - continue; - if (r->end == res->end && r->start > res->start) - continue; - } - - if (!prev) - prev = r; - - /* - * A small resource is higher than a large one that ends at - * the same address. - */ - if (r->end > prev->end || - (r->end == prev->end && r->start > prev->start)) - prev = r; - } - - return prev; -} - /** * pci_bus_alloc_resource - allocate a resource from a parent bus * @bus: PCI bus @@ -132,10 +89,9 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, resource_size_t), void *alignf_data) { - int ret = -ENOMEM; + int i, ret = -ENOMEM; struct resource *r; resource_size_t max = -1; - unsigned int type = res->flags & IORESOURCE_TYPE_BITS; type_mask |= IORESOURCE_IO | IORESOURCE_MEM; @@ -143,9 +99,10 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, if (!(res->flags & IORESOURCE_MEM_64)) max = PCIBIOS_MAX_MEM_32; - /* Look for space at highest addresses first */ - r = pci_bus_find_resource_prev(bus, type, NULL); - for ( ; r; r = pci_bus_find_resource_prev(bus, type, r)) { + pci_bus_for_each_resource(bus, r, i) { + if (!r) + continue; + /* type_mask must match */ if ((res->flags ^ r->flags) & type_mask) continue; -- cgit v1.2.3 From 587f0d5d6d44e3529028bf197d424f866fb2411d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 15 Dec 2010 18:45:42 -0300 Subject: [media] bttv: fix mutex use before init (BZ#24602) Fix a regression where bttv driver causes oopses when loading, since it were using some non-initialized mutexes. While it would be possible to fix the issue, there are some other lock troubles, like to the presence of lock code at free_btres_lock(). It is possible to fix, but the better is to just use the core-assisted locking schema. This way, V4L2 core will serialize access to all ioctl's/open/close/mmap/read/poll operations, avoiding to have two processes accessing the hardware at the same time. Also, as there's just one lock, instead of 3, there's no risk of dead locks. The net result is a cleaner code, with just one lock. Reported-by: Dan Carpenter Reported-by: Brandon Philips Reported-by: Chris Clayton Reported-by: Torsten Kaiser Tested-by: Chris Clayton Tested-by: Torsten Kaiser Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/bt8xx/bttv-driver.c | 97 +-------------------------------- 1 file changed, 3 insertions(+), 94 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c index 3da6e80e1041..c14b819d6b78 100644 --- a/drivers/media/video/bt8xx/bttv-driver.c +++ b/drivers/media/video/bt8xx/bttv-driver.c @@ -855,7 +855,6 @@ int check_alloc_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bit) xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM; /* is it free? */ - mutex_lock(&btv->lock); if (btv->resources & xbits) { /* no, someone else uses it */ goto fail; @@ -885,11 +884,9 @@ int check_alloc_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bit) /* it's free, grab it */ fh->resources |= bit; btv->resources |= bit; - mutex_unlock(&btv->lock); return 1; fail: - mutex_unlock(&btv->lock); return 0; } @@ -941,7 +938,6 @@ void free_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bits) /* trying to free ressources not allocated by us ... */ printk("bttv: BUG! (btres)\n"); } - mutex_lock(&btv->lock); fh->resources &= ~bits; btv->resources &= ~bits; @@ -952,8 +948,6 @@ void free_btres_lock(struct bttv *btv, struct bttv_fh *fh, int bits) if (0 == (bits & VBI_RESOURCES)) disclaim_vbi_lines(btv); - - mutex_unlock(&btv->lock); } /* ----------------------------------------------------------------------- */ @@ -1714,28 +1708,20 @@ static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv, /* Make sure tvnorm and vbi_end remain consistent until we're done. */ - mutex_lock(&btv->lock); norm = btv->tvnorm; /* In this mode capturing always starts at defrect.top (default VDELAY), ignoring cropping parameters. */ if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) { - mutex_unlock(&btv->lock); return -EINVAL; } - mutex_unlock(&btv->lock); - c.rect = bttv_tvnorms[norm].cropcap.defrect; } else { - mutex_lock(&btv->lock); - norm = btv->tvnorm; c = btv->crop[!!fh->do_crop]; - mutex_unlock(&btv->lock); - if (width < c.min_scaled_width || width > c.max_scaled_width || height < c.min_scaled_height) @@ -1859,7 +1845,6 @@ static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id) unsigned int i; int err; - mutex_lock(&btv->lock); err = v4l2_prio_check(&btv->prio, fh->prio); if (err) goto err; @@ -1875,7 +1860,6 @@ static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id) set_tvnorm(btv, i); err: - mutex_unlock(&btv->lock); return err; } @@ -1899,7 +1883,6 @@ static int bttv_enum_input(struct file *file, void *priv, struct bttv *btv = fh->btv; int rc = 0; - mutex_lock(&btv->lock); if (i->index >= bttv_tvcards[btv->c.type].video_inputs) { rc = -EINVAL; goto err; @@ -1929,7 +1912,6 @@ static int bttv_enum_input(struct file *file, void *priv, i->std = BTTV_NORMS; err: - mutex_unlock(&btv->lock); return rc; } @@ -1939,9 +1921,7 @@ static int bttv_g_input(struct file *file, void *priv, unsigned int *i) struct bttv_fh *fh = priv; struct bttv *btv = fh->btv; - mutex_lock(&btv->lock); *i = btv->input; - mutex_unlock(&btv->lock); return 0; } @@ -1953,7 +1933,6 @@ static int bttv_s_input(struct file *file, void *priv, unsigned int i) int err; - mutex_lock(&btv->lock); err = v4l2_prio_check(&btv->prio, fh->prio); if (unlikely(err)) goto err; @@ -1966,7 +1945,6 @@ static int bttv_s_input(struct file *file, void *priv, unsigned int i) set_input(btv, i, btv->tvnorm); err: - mutex_unlock(&btv->lock); return 0; } @@ -1980,7 +1958,6 @@ static int bttv_s_tuner(struct file *file, void *priv, if (unlikely(0 != t->index)) return -EINVAL; - mutex_lock(&btv->lock); if (unlikely(btv->tuner_type == TUNER_ABSENT)) { err = -EINVAL; goto err; @@ -1996,7 +1973,6 @@ static int bttv_s_tuner(struct file *file, void *priv, btv->audio_mode_gpio(btv, t, 1); err: - mutex_unlock(&btv->lock); return 0; } @@ -2007,10 +1983,8 @@ static int bttv_g_frequency(struct file *file, void *priv, struct bttv_fh *fh = priv; struct bttv *btv = fh->btv; - mutex_lock(&btv->lock); f->type = btv->radio_user ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; f->frequency = btv->freq; - mutex_unlock(&btv->lock); return 0; } @@ -2025,7 +1999,6 @@ static int bttv_s_frequency(struct file *file, void *priv, if (unlikely(f->tuner != 0)) return -EINVAL; - mutex_lock(&btv->lock); err = v4l2_prio_check(&btv->prio, fh->prio); if (unlikely(err)) goto err; @@ -2040,7 +2013,6 @@ static int bttv_s_frequency(struct file *file, void *priv, if (btv->has_matchbox && btv->radio_user) tea5757_set_freq(btv, btv->freq); err: - mutex_unlock(&btv->lock); return 0; } @@ -2173,7 +2145,6 @@ limit_scaled_size_lock (struct bttv_fh * fh, /* Make sure tvnorm, vbi_end and the current cropping parameters remain consistent until we're done. */ - mutex_lock(&btv->lock); b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds; @@ -2251,7 +2222,6 @@ limit_scaled_size_lock (struct bttv_fh * fh, rc = 0; /* success */ fail: - mutex_unlock(&btv->lock); return rc; } @@ -2283,9 +2253,7 @@ verify_window_lock (struct bttv_fh * fh, if (V4L2_FIELD_ANY == field) { __s32 height2; - mutex_lock(&fh->btv->lock); height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1; - mutex_unlock(&fh->btv->lock); field = (win->w.height > height2) ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; @@ -2361,7 +2329,6 @@ static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv, } } - mutex_lock(&fh->cap.vb_lock); /* clip against screen */ if (NULL != btv->fbuf.base) n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height, @@ -2413,7 +2380,6 @@ static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv, bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new); retval = bttv_switch_overlay(btv,fh,new); } - mutex_unlock(&fh->cap.vb_lock); return retval; } @@ -2527,9 +2493,7 @@ static int bttv_try_fmt_vid_cap(struct file *file, void *priv, if (V4L2_FIELD_ANY == field) { __s32 height2; - mutex_lock(&btv->lock); height2 = btv->crop[!!fh->do_crop].rect.height >> 1; - mutex_unlock(&btv->lock); field = (f->fmt.pix.height > height2) ? V4L2_FIELD_INTERLACED : V4L2_FIELD_BOTTOM; @@ -2615,7 +2579,6 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv, fmt = format_by_fourcc(f->fmt.pix.pixelformat); /* update our state informations */ - mutex_lock(&fh->cap.vb_lock); fh->fmt = fmt; fh->cap.field = f->fmt.pix.field; fh->cap.last = V4L2_FIELD_NONE; @@ -2624,7 +2587,6 @@ static int bttv_s_fmt_vid_cap(struct file *file, void *priv, btv->init.fmt = fmt; btv->init.width = f->fmt.pix.width; btv->init.height = f->fmt.pix.height; - mutex_unlock(&fh->cap.vb_lock); return 0; } @@ -2650,11 +2612,9 @@ static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) unsigned int i; struct bttv_fh *fh = priv; - mutex_lock(&fh->cap.vb_lock); retval = __videobuf_mmap_setup(&fh->cap, gbuffers, gbufsize, V4L2_MEMORY_MMAP); if (retval < 0) { - mutex_unlock(&fh->cap.vb_lock); return retval; } @@ -2666,7 +2626,6 @@ static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) for (i = 0; i < gbuffers; i++) mbuf->offsets[i] = i * gbufsize; - mutex_unlock(&fh->cap.vb_lock); return 0; } #endif @@ -2776,10 +2735,8 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on) int retval = 0; if (on) { - mutex_lock(&fh->cap.vb_lock); /* verify args */ if (unlikely(!btv->fbuf.base)) { - mutex_unlock(&fh->cap.vb_lock); return -EINVAL; } if (unlikely(!fh->ov.setup_ok)) { @@ -2788,13 +2745,11 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on) } if (retval) return retval; - mutex_unlock(&fh->cap.vb_lock); } if (!check_alloc_btres_lock(btv, fh, RESOURCE_OVERLAY)) return -EBUSY; - mutex_lock(&fh->cap.vb_lock); if (on) { fh->ov.tvnorm = btv->tvnorm; new = videobuf_sg_alloc(sizeof(*new)); @@ -2806,7 +2761,6 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on) /* switch over */ retval = bttv_switch_overlay(btv, fh, new); - mutex_unlock(&fh->cap.vb_lock); return retval; } @@ -2845,7 +2799,6 @@ static int bttv_s_fbuf(struct file *file, void *f, } /* ok, accept it */ - mutex_lock(&fh->cap.vb_lock); btv->fbuf.base = fb->base; btv->fbuf.fmt.width = fb->fmt.width; btv->fbuf.fmt.height = fb->fmt.height; @@ -2877,7 +2830,6 @@ static int bttv_s_fbuf(struct file *file, void *f, retval = bttv_switch_overlay(btv, fh, new); } } - mutex_unlock(&fh->cap.vb_lock); return retval; } @@ -2956,7 +2908,6 @@ static int bttv_queryctrl(struct file *file, void *priv, c->id >= V4L2_CID_PRIVATE_LASTP1)) return -EINVAL; - mutex_lock(&btv->lock); if (!btv->volume_gpio && (c->id == V4L2_CID_AUDIO_VOLUME)) *c = no_ctl; else { @@ -2964,7 +2915,6 @@ static int bttv_queryctrl(struct file *file, void *priv, *c = (NULL != ctrl) ? *ctrl : no_ctl; } - mutex_unlock(&btv->lock); return 0; } @@ -2975,10 +2925,8 @@ static int bttv_g_parm(struct file *file, void *f, struct bttv_fh *fh = f; struct bttv *btv = fh->btv; - mutex_lock(&btv->lock); v4l2_video_std_frame_period(bttv_tvnorms[btv->tvnorm].v4l2_id, &parm->parm.capture.timeperframe); - mutex_unlock(&btv->lock); return 0; } @@ -2994,7 +2942,6 @@ static int bttv_g_tuner(struct file *file, void *priv, if (0 != t->index) return -EINVAL; - mutex_lock(&btv->lock); t->rxsubchans = V4L2_TUNER_SUB_MONO; bttv_call_all(btv, tuner, g_tuner, t); strcpy(t->name, "Television"); @@ -3006,7 +2953,6 @@ static int bttv_g_tuner(struct file *file, void *priv, if (btv->audio_mode_gpio) btv->audio_mode_gpio(btv, t, 0); - mutex_unlock(&btv->lock); return 0; } @@ -3015,9 +2961,7 @@ static int bttv_g_priority(struct file *file, void *f, enum v4l2_priority *p) struct bttv_fh *fh = f; struct bttv *btv = fh->btv; - mutex_lock(&btv->lock); *p = v4l2_prio_max(&btv->prio); - mutex_unlock(&btv->lock); return 0; } @@ -3029,9 +2973,7 @@ static int bttv_s_priority(struct file *file, void *f, struct bttv *btv = fh->btv; int rc; - mutex_lock(&btv->lock); rc = v4l2_prio_change(&btv->prio, &fh->prio, prio); - mutex_unlock(&btv->lock); return rc; } @@ -3046,9 +2988,7 @@ static int bttv_cropcap(struct file *file, void *priv, cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY) return -EINVAL; - mutex_lock(&btv->lock); *cap = bttv_tvnorms[btv->tvnorm].cropcap; - mutex_unlock(&btv->lock); return 0; } @@ -3066,9 +3006,7 @@ static int bttv_g_crop(struct file *file, void *f, struct v4l2_crop *crop) inconsistent with fh->width or fh->height and apps do not expect a change here. */ - mutex_lock(&btv->lock); crop->c = btv->crop[!!fh->do_crop].rect; - mutex_unlock(&btv->lock); return 0; } @@ -3092,17 +3030,14 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop) /* Make sure tvnorm, vbi_end and the current cropping parameters remain consistent until we're done. Note read() may change vbi_end in check_alloc_btres_lock(). */ - mutex_lock(&btv->lock); retval = v4l2_prio_check(&btv->prio, fh->prio); if (0 != retval) { - mutex_unlock(&btv->lock); return retval; } retval = -EBUSY; if (locked_btres(fh->btv, VIDEO_RESOURCES)) { - mutex_unlock(&btv->lock); return retval; } @@ -3114,7 +3049,6 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop) b_top = max(b->top, btv->vbi_end); if (b_top + 32 >= b_bottom) { - mutex_unlock(&btv->lock); return retval; } @@ -3137,12 +3071,8 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop) btv->crop[1] = c; - mutex_unlock(&btv->lock); - fh->do_crop = 1; - mutex_lock(&fh->cap.vb_lock); - if (fh->width < c.min_scaled_width) { fh->width = c.min_scaled_width; btv->init.width = c.min_scaled_width; @@ -3159,8 +3089,6 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop) btv->init.height = c.max_scaled_height; } - mutex_unlock(&fh->cap.vb_lock); - return 0; } @@ -3228,7 +3156,6 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait) return videobuf_poll_stream(file, &fh->vbi, wait); } - mutex_lock(&fh->cap.vb_lock); if (check_btres(fh,RESOURCE_VIDEO_STREAM)) { /* streaming capture */ if (list_empty(&fh->cap.stream)) @@ -3263,7 +3190,6 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait) else rc = 0; err: - mutex_unlock(&fh->cap.vb_lock); return rc; } @@ -3303,14 +3229,11 @@ static int bttv_open(struct file *file) * Let's first copy btv->init at fh, holding cap.vb_lock, and then work * with the rest of init, holding btv->lock. */ - mutex_lock(&fh->cap.vb_lock); *fh = btv->init; - mutex_unlock(&fh->cap.vb_lock); fh->type = type; fh->ov.setup_ok = 0; - mutex_lock(&btv->lock); v4l2_prio_open(&btv->prio, &fh->prio); videobuf_queue_sg_init(&fh->cap, &bttv_video_qops, @@ -3318,13 +3241,13 @@ static int bttv_open(struct file *file) V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_INTERLACED, sizeof(struct bttv_buffer), - fh, NULL); + fh, &btv->lock); videobuf_queue_sg_init(&fh->vbi, &bttv_vbi_qops, &btv->c.pci->dev, &btv->s_lock, V4L2_BUF_TYPE_VBI_CAPTURE, V4L2_FIELD_SEQ_TB, sizeof(struct bttv_buffer), - fh, NULL); + fh, &btv->lock); set_tvnorm(btv,btv->tvnorm); set_input(btv, btv->input, btv->tvnorm); @@ -3347,7 +3270,6 @@ static int bttv_open(struct file *file) bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm); bttv_field_count(btv); - mutex_unlock(&btv->lock); return 0; } @@ -3356,7 +3278,6 @@ static int bttv_release(struct file *file) struct bttv_fh *fh = file->private_data; struct bttv *btv = fh->btv; - mutex_lock(&btv->lock); /* turn off overlay */ if (check_btres(fh, RESOURCE_OVERLAY)) bttv_switch_overlay(btv,fh,NULL); @@ -3386,10 +3307,8 @@ static int bttv_release(struct file *file) * videobuf uses cap.vb_lock - we should avoid holding btv->lock, * otherwise we may have dead lock conditions */ - mutex_unlock(&btv->lock); videobuf_mmap_free(&fh->cap); videobuf_mmap_free(&fh->vbi); - mutex_lock(&btv->lock); v4l2_prio_close(&btv->prio, fh->prio); file->private_data = NULL; kfree(fh); @@ -3399,7 +3318,6 @@ static int bttv_release(struct file *file) if (!btv->users) audio_mute(btv, 1); - mutex_unlock(&btv->lock); return 0; } @@ -3503,11 +3421,8 @@ static int radio_open(struct file *file) if (unlikely(!fh)) return -ENOMEM; file->private_data = fh; - mutex_lock(&fh->cap.vb_lock); *fh = btv->init; - mutex_unlock(&fh->cap.vb_lock); - mutex_lock(&btv->lock); v4l2_prio_open(&btv->prio, &fh->prio); btv->radio_user++; @@ -3515,7 +3430,6 @@ static int radio_open(struct file *file) bttv_call_all(btv, tuner, s_radio); audio_input(btv,TVAUDIO_INPUT_RADIO); - mutex_unlock(&btv->lock); return 0; } @@ -3525,7 +3439,6 @@ static int radio_release(struct file *file) struct bttv *btv = fh->btv; struct rds_command cmd; - mutex_lock(&btv->lock); v4l2_prio_close(&btv->prio, fh->prio); file->private_data = NULL; kfree(fh); @@ -3533,7 +3446,6 @@ static int radio_release(struct file *file) btv->radio_user--; bttv_call_all(btv, core, ioctl, RDS_CMD_CLOSE, &cmd); - mutex_unlock(&btv->lock); return 0; } @@ -3562,7 +3474,6 @@ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) return -EINVAL; if (0 != t->index) return -EINVAL; - mutex_lock(&btv->lock); strcpy(t->name, "Radio"); t->type = V4L2_TUNER_RADIO; @@ -3571,8 +3482,6 @@ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) if (btv->audio_mode_gpio) btv->audio_mode_gpio(btv, t, 0); - mutex_unlock(&btv->lock); - return 0; } @@ -3693,7 +3602,7 @@ static const struct v4l2_file_operations radio_fops = .open = radio_open, .read = radio_read, .release = radio_release, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .poll = radio_poll, }; -- cgit v1.2.3 From 692e42df12e8427219958468301f3d03ca5f0f0d Mon Sep 17 00:00:00 2001 From: Brandon Philips Date: Fri, 17 Dec 2010 12:58:22 -0300 Subject: [media] bttv: remove unneeded locking comments After Mauro's "bttv: Fix locking issues due to BKL removal code" there are a number of comments that are no longer needed about lock ordering. Remove them. Signed-off-by: Brandon Philips Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/bt8xx/bttv-driver.c | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c index c14b819d6b78..e071b62f36aa 100644 --- a/drivers/media/video/bt8xx/bttv-driver.c +++ b/drivers/media/video/bt8xx/bttv-driver.c @@ -2359,13 +2359,6 @@ static int setup_window_lock(struct bttv_fh *fh, struct bttv *btv, fh->ov.field = win->field; fh->ov.setup_ok = 1; - /* - * FIXME: btv is protected by btv->lock mutex, while btv->init - * is protected by fh->cap.vb_lock. This seems to open the - * possibility for some race situations. Maybe the better would - * be to unify those locks or to use another way to store the - * init values that will be consumed by videobuf callbacks - */ btv->init.ov.w.width = win->w.width; btv->init.ov.w.height = win->w.height; btv->init.ov.field = win->field; @@ -3220,15 +3213,6 @@ static int bttv_open(struct file *file) return -ENOMEM; file->private_data = fh; - /* - * btv is protected by btv->lock mutex, while btv->init and other - * streaming vars are protected by fh->cap.vb_lock. We need to take - * care of both locks to avoid troubles. However, vb_lock is used also - * inside videobuf, without calling buf->lock. So, it is a very bad - * idea to hold both locks at the same time. - * Let's first copy btv->init at fh, holding cap.vb_lock, and then work - * with the rest of init, holding btv->lock. - */ *fh = btv->init; fh->type = type; @@ -3303,10 +3287,6 @@ static int bttv_release(struct file *file) /* free stuff */ - /* - * videobuf uses cap.vb_lock - we should avoid holding btv->lock, - * otherwise we may have dead lock conditions - */ videobuf_mmap_free(&fh->cap); videobuf_mmap_free(&fh->vbi); v4l2_prio_close(&btv->prio, fh->prio); -- cgit v1.2.3 From 5e68f400aad4e2c29e2531cc4413c459fa88cb62 Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:14:10 -0300 Subject: [media] gspca - sonixj: Move bridge init to sd start MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 265 ++++++++++++++++++------------------- 1 file changed, 129 insertions(+), 136 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 330dadc00106..5d5698959b10 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -1755,141 +1755,6 @@ static void po2030n_probe(struct gspca_dev *gspca_dev) } } -static void bridge_init(struct gspca_dev *gspca_dev, - const u8 *sn9c1xx) -{ - struct sd *sd = (struct sd *) gspca_dev; - u8 reg0102[2]; - const u8 *reg9a; - static const u8 reg9a_def[] = - {0x00, 0x40, 0x20, 0x00, 0x00, 0x00}; - static const u8 reg9a_spec[] = - {0x00, 0x40, 0x38, 0x30, 0x00, 0x20}; - static const u8 regd4[] = {0x60, 0x00, 0x00}; - - /* sensor clock already enabled in sd_init */ - /* reg_w1(gspca_dev, 0xf1, 0x00); */ - reg_w1(gspca_dev, 0x01, sn9c1xx[1]); - - /* configure gpio */ - reg0102[0] = sn9c1xx[1]; - reg0102[1] = sn9c1xx[2]; - if (gspca_dev->audio) - reg0102[1] |= 0x04; /* keep the audio connection */ - reg_w(gspca_dev, 0x01, reg0102, 2); - reg_w(gspca_dev, 0x08, &sn9c1xx[8], 2); - reg_w(gspca_dev, 0x17, &sn9c1xx[0x17], 5); - switch (sd->sensor) { - case SENSOR_GC0307: - case SENSOR_OV7660: - case SENSOR_PO1030: - case SENSOR_PO2030N: - case SENSOR_SOI768: - case SENSOR_SP80708: - reg9a = reg9a_spec; - break; - default: - reg9a = reg9a_def; - break; - } - reg_w(gspca_dev, 0x9a, reg9a, 6); - - reg_w(gspca_dev, 0xd4, regd4, sizeof regd4); - - reg_w(gspca_dev, 0x03, &sn9c1xx[3], 0x0f); - - switch (sd->sensor) { - case SENSOR_ADCM1700: - reg_w1(gspca_dev, 0x01, 0x43); - reg_w1(gspca_dev, 0x17, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - reg_w1(gspca_dev, 0x01, 0x42); - break; - case SENSOR_GC0307: - msleep(50); - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x22); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - msleep(50); - break; - case SENSOR_MI0360B: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x60); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_MT9V111: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x61); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_OM6802: - msleep(10); - reg_w1(gspca_dev, 0x02, 0x73); - reg_w1(gspca_dev, 0x17, 0x60); - reg_w1(gspca_dev, 0x01, 0x22); - msleep(100); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x17, 0x64); - reg_w1(gspca_dev, 0x17, 0x64); - reg_w1(gspca_dev, 0x01, 0x42); - msleep(10); - reg_w1(gspca_dev, 0x01, 0x42); - i2c_w8(gspca_dev, om6802_init0[0]); - i2c_w8(gspca_dev, om6802_init0[1]); - msleep(15); - reg_w1(gspca_dev, 0x02, 0x71); - msleep(150); - break; - case SENSOR_OV7630: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0xe2); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_OV7648: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - break; - case SENSOR_PO1030: - case SENSOR_SOI768: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_PO2030N: - case SENSOR_OV7660: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - break; - case SENSOR_SP80708: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - msleep(100); - reg_w1(gspca_dev, 0x02, 0x62); - break; - default: -/* case SENSOR_HV7131R: */ -/* case SENSOR_MI0360: */ -/* case SENSOR_MO4000: */ - reg_w1(gspca_dev, 0x01, 0x43); - reg_w1(gspca_dev, 0x17, 0x61); - reg_w1(gspca_dev, 0x01, 0x42); - if (sd->sensor == SENSOR_HV7131R) - hv7131r_probe(gspca_dev); - break; - } -} - /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) @@ -2423,10 +2288,17 @@ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int i; + u8 reg0102[2]; + const u8 *reg9a; u8 reg1, reg17; const u8 *sn9c1xx; const u8 (*init)[8]; int mode; + static const u8 reg9a_def[] = + {0x00, 0x40, 0x20, 0x00, 0x00, 0x00}; + static const u8 reg9a_spec[] = + {0x00, 0x40, 0x38, 0x30, 0x00, 0x20}; + static const u8 regd4[] = {0x60, 0x00, 0x00}; static const u8 C0[] = { 0x2d, 0x2d, 0x3a, 0x05, 0x04, 0x3f }; static const u8 CA[] = { 0x28, 0xd8, 0x14, 0xec }; static const u8 CA_adcm1700[] = @@ -2448,7 +2320,128 @@ static int sd_start(struct gspca_dev *gspca_dev) /* initialize the bridge */ sn9c1xx = sn_tb[sd->sensor]; - bridge_init(gspca_dev, sn9c1xx); + + /* sensor clock already enabled in sd_init */ + /* reg_w1(gspca_dev, 0xf1, 0x00); */ + reg_w1(gspca_dev, 0x01, sn9c1xx[1]); + + /* configure gpio */ + reg0102[0] = sn9c1xx[1]; + reg0102[1] = sn9c1xx[2]; + if (gspca_dev->audio) + reg0102[1] |= 0x04; /* keep the audio connection */ + reg_w(gspca_dev, 0x01, reg0102, 2); + reg_w(gspca_dev, 0x08, &sn9c1xx[8], 2); + reg_w(gspca_dev, 0x17, &sn9c1xx[0x17], 5); + switch (sd->sensor) { + case SENSOR_GC0307: + case SENSOR_OV7660: + case SENSOR_PO1030: + case SENSOR_PO2030N: + case SENSOR_SOI768: + case SENSOR_SP80708: + reg9a = reg9a_spec; + break; + default: + reg9a = reg9a_def; + break; + } + reg_w(gspca_dev, 0x9a, reg9a, 6); + + reg_w(gspca_dev, 0xd4, regd4, sizeof regd4); + + reg_w(gspca_dev, 0x03, &sn9c1xx[3], 0x0f); + + switch (sd->sensor) { + case SENSOR_ADCM1700: + reg_w1(gspca_dev, 0x01, 0x43); + reg_w1(gspca_dev, 0x17, 0x62); + reg_w1(gspca_dev, 0x01, 0x42); + reg_w1(gspca_dev, 0x01, 0x42); + break; + case SENSOR_GC0307: + msleep(50); + reg_w1(gspca_dev, 0x01, 0x61); + reg_w1(gspca_dev, 0x17, 0x22); + reg_w1(gspca_dev, 0x01, 0x60); + reg_w1(gspca_dev, 0x01, 0x40); + msleep(50); + break; + case SENSOR_MI0360B: + reg_w1(gspca_dev, 0x01, 0x61); + reg_w1(gspca_dev, 0x17, 0x60); + reg_w1(gspca_dev, 0x01, 0x60); + reg_w1(gspca_dev, 0x01, 0x40); + break; + case SENSOR_MT9V111: + reg_w1(gspca_dev, 0x01, 0x61); + reg_w1(gspca_dev, 0x17, 0x61); + reg_w1(gspca_dev, 0x01, 0x60); + reg_w1(gspca_dev, 0x01, 0x40); + break; + case SENSOR_OM6802: + msleep(10); + reg_w1(gspca_dev, 0x02, 0x73); + reg_w1(gspca_dev, 0x17, 0x60); + reg_w1(gspca_dev, 0x01, 0x22); + msleep(100); + reg_w1(gspca_dev, 0x01, 0x62); + reg_w1(gspca_dev, 0x17, 0x64); + reg_w1(gspca_dev, 0x17, 0x64); + reg_w1(gspca_dev, 0x01, 0x42); + msleep(10); + reg_w1(gspca_dev, 0x01, 0x42); + i2c_w8(gspca_dev, om6802_init0[0]); + i2c_w8(gspca_dev, om6802_init0[1]); + msleep(15); + reg_w1(gspca_dev, 0x02, 0x71); + msleep(150); + break; + case SENSOR_OV7630: + reg_w1(gspca_dev, 0x01, 0x61); + reg_w1(gspca_dev, 0x17, 0xe2); + reg_w1(gspca_dev, 0x01, 0x60); + reg_w1(gspca_dev, 0x01, 0x40); + break; + case SENSOR_OV7648: + reg_w1(gspca_dev, 0x01, 0x63); + reg_w1(gspca_dev, 0x17, 0x20); + reg_w1(gspca_dev, 0x01, 0x62); + reg_w1(gspca_dev, 0x01, 0x42); + break; + case SENSOR_PO1030: + case SENSOR_SOI768: + reg_w1(gspca_dev, 0x01, 0x61); + reg_w1(gspca_dev, 0x17, 0x20); + reg_w1(gspca_dev, 0x01, 0x60); + reg_w1(gspca_dev, 0x01, 0x40); + break; + case SENSOR_PO2030N: + case SENSOR_OV7660: + reg_w1(gspca_dev, 0x01, 0x63); + reg_w1(gspca_dev, 0x17, 0x20); + reg_w1(gspca_dev, 0x01, 0x62); + reg_w1(gspca_dev, 0x01, 0x42); + break; + case SENSOR_SP80708: + reg_w1(gspca_dev, 0x01, 0x63); + reg_w1(gspca_dev, 0x17, 0x20); + reg_w1(gspca_dev, 0x01, 0x62); + reg_w1(gspca_dev, 0x01, 0x42); + msleep(100); + reg_w1(gspca_dev, 0x02, 0x62); + break; + default: +/* case SENSOR_HV7131R: */ +/* case SENSOR_MI0360: */ +/* case SENSOR_MO4000: */ + reg_w1(gspca_dev, 0x01, 0x43); + reg_w1(gspca_dev, 0x17, 0x61); + reg_w1(gspca_dev, 0x01, 0x42); + if (sd->sensor == SENSOR_HV7131R) + hv7131r_probe(gspca_dev); + break; + } /* initialize the sensor */ i2c_w_seq(gspca_dev, sensor_init[sd->sensor]); -- cgit v1.2.3 From 4f67f3adefadbb056c1ce2c228916701b566e6fc Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:15:00 -0300 Subject: [media] gspca - sonixj: Fix a bad probe exchange MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 5d5698959b10..6f3ec2e92391 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -1794,7 +1794,7 @@ static int sd_init(struct gspca_dev *gspca_dev) /* setup a selector by bridge */ reg_w1(gspca_dev, 0xf1, 0x01); reg_r(gspca_dev, 0x00, 1); - reg_w1(gspca_dev, 0xf1, gspca_dev->usb_buf[0]); + reg_w1(gspca_dev, 0xf1, 0x00); reg_r(gspca_dev, 0x00, 1); /* get sonix chip id */ regF1 = gspca_dev->usb_buf[0]; if (gspca_dev->usb_err < 0) @@ -2289,10 +2289,10 @@ static int sd_start(struct gspca_dev *gspca_dev) struct sd *sd = (struct sd *) gspca_dev; int i; u8 reg0102[2]; - const u8 *reg9a; u8 reg1, reg17; const u8 *sn9c1xx; const u8 (*init)[8]; + const u8 *reg9a; int mode; static const u8 reg9a_def[] = {0x00, 0x40, 0x20, 0x00, 0x00, 0x00}; -- cgit v1.2.3 From c6c14330717f9850b4b4c054b81424b9979cd07d Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:15:37 -0300 Subject: [media] gspca - sonixj: Add a flag in the driver_info table MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 6f3ec2e92391..1b9157347763 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -64,6 +64,7 @@ struct sd { u8 jpegqual; /* webcam quality */ u8 reg18; + u8 flags; s8 ag_cnt; #define AG_CNT_START 13 @@ -1763,7 +1764,8 @@ static int sd_config(struct gspca_dev *gspca_dev, struct cam *cam; sd->bridge = id->driver_info >> 16; - sd->sensor = id->driver_info; + sd->sensor = id->driver_info >> 8; + sd->flags = id->driver_info; cam = &gspca_dev->cam; if (sd->sensor == SENSOR_ADCM1700) { @@ -2947,7 +2949,11 @@ static const struct sd_desc sd_desc = { /* -- module initialisation -- */ #define BS(bridge, sensor) \ .driver_info = (BRIDGE_ ## bridge << 16) \ - | SENSOR_ ## sensor + | (SENSOR_ ## sensor << 8) +#define BSF(bridge, sensor, flags) \ + .driver_info = (BRIDGE_ ## bridge << 16) \ + | (SENSOR_ ## sensor << 8) \ + | (flags) static const __devinitdata struct usb_device_id device_table[] = { #if !defined CONFIG_USB_SN9C102 && !defined CONFIG_USB_SN9C102_MODULE {USB_DEVICE(0x0458, 0x7025), BS(SN9C120, MI0360)}, -- cgit v1.2.3 From b2272a49e7df37732d73988f00468ce31e1ebc92 Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:16:16 -0300 Subject: [media] gspca - sonixj: Set the flag for some devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The flag PDN_INV indicates that the sensor pin S_PWR_DN has not the same value as other webcams with the same sensor. For now, only two webcams have been so detected: the Microsoft's VX1000 and VX3000. Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 1b9157347763..9c5a2aace493 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -97,6 +97,9 @@ enum sensors { SENSOR_SP80708, }; +/* device flags */ +#define PDN_INV 1 /* inverse pin S_PWR_DN / sn_xxx tables */ + /* V4L2 controls supported by the driver */ static void setbrightness(struct gspca_dev *gspca_dev); static void setcontrast(struct gspca_dev *gspca_dev); @@ -2959,8 +2962,8 @@ static const __devinitdata struct usb_device_id device_table[] = { {USB_DEVICE(0x0458, 0x7025), BS(SN9C120, MI0360)}, {USB_DEVICE(0x0458, 0x702e), BS(SN9C120, OV7660)}, #endif - {USB_DEVICE(0x045e, 0x00f5), BS(SN9C105, OV7660)}, - {USB_DEVICE(0x045e, 0x00f7), BS(SN9C105, OV7660)}, + {USB_DEVICE(0x045e, 0x00f5), BSF(SN9C105, OV7660, PDN_INV)}, + {USB_DEVICE(0x045e, 0x00f7), BSF(SN9C105, OV7660, PDN_INV)}, {USB_DEVICE(0x0471, 0x0327), BS(SN9C105, MI0360)}, {USB_DEVICE(0x0471, 0x0328), BS(SN9C105, MI0360)}, {USB_DEVICE(0x0471, 0x0330), BS(SN9C105, MI0360)}, -- cgit v1.2.3 From 4fd350ee2bf129acb933ad5104bc4754b2c7c9ef Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:16:58 -0300 Subject: [media] gspca - sonixj: Add the bit definitions of the bridge reg 0x01 and 0x17 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 9c5a2aace493..8ff4c89c3d82 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -100,6 +100,19 @@ enum sensors { /* device flags */ #define PDN_INV 1 /* inverse pin S_PWR_DN / sn_xxx tables */ +/* sn9c1xx definitions */ +/* register 0x01 */ +#define S_PWR_DN 0x01 /* sensor power down */ +#define S_PDN_INV 0x02 /* inverse pin S_PWR_DN */ +#define V_TX_EN 0x04 /* video transfer enable */ +#define LED 0x08 /* output to pin LED */ +#define SCL_SEL_OD 0x20 /* open-drain mode */ +#define SYS_SEL_48M 0x40 /* system clock 0: 24MHz, 1: 48MHz */ +/* register 0x17 */ +#define MCK_SIZE_MASK 0x1f /* sensor master clock */ +#define SEN_CLK_EN 0x20 /* enable sensor clock */ +#define DEF_EN 0x80 /* defect pixel by 0: soft, 1: hard */ + /* V4L2 controls supported by the driver */ static void setbrightness(struct gspca_dev *gspca_dev); static void setcontrast(struct gspca_dev *gspca_dev); -- cgit v1.2.3 From 0e4d413af1a9ddd12f82617734eb535007e186a8 Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 14 Dec 2010 16:17:40 -0300 Subject: [media] gspca - sonixj: Better handling of the bridge registers 0x01 and 0x17 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The initial values of the registers 0x01 and 0x17 are taken from the sensor table at capture start and updated according to the flag PDN_INV. Their values are updated at each step of the capture initialization and memorized for reuse in capture stop. This patch also fixed automatically some bad hardcoded values of these registers. Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixj.c | 263 ++++++++++++++----------------------- 1 file changed, 100 insertions(+), 163 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 8ff4c89c3d82..e23de57e2c73 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -63,6 +63,8 @@ struct sd { #define QUALITY_DEF 80 u8 jpegqual; /* webcam quality */ + u8 reg01; + u8 reg17; u8 reg18; u8 flags; @@ -2306,8 +2308,8 @@ static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int i; + u8 reg01, reg17; u8 reg0102[2]; - u8 reg1, reg17; const u8 *sn9c1xx; const u8 (*init)[8]; const u8 *reg9a; @@ -2341,10 +2343,13 @@ static int sd_start(struct gspca_dev *gspca_dev) /* sensor clock already enabled in sd_init */ /* reg_w1(gspca_dev, 0xf1, 0x00); */ - reg_w1(gspca_dev, 0x01, sn9c1xx[1]); + reg01 = sn9c1xx[1]; + if (sd->flags & PDN_INV) + reg01 ^= S_PDN_INV; /* power down inverted */ + reg_w1(gspca_dev, 0x01, reg01); /* configure gpio */ - reg0102[0] = sn9c1xx[1]; + reg0102[0] = reg01; reg0102[1] = sn9c1xx[2]; if (gspca_dev->audio) reg0102[1] |= 0x04; /* keep the audio connection */ @@ -2370,95 +2375,49 @@ static int sd_start(struct gspca_dev *gspca_dev) reg_w(gspca_dev, 0x03, &sn9c1xx[3], 0x0f); + reg17 = sn9c1xx[0x17]; switch (sd->sensor) { - case SENSOR_ADCM1700: - reg_w1(gspca_dev, 0x01, 0x43); - reg_w1(gspca_dev, 0x17, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - reg_w1(gspca_dev, 0x01, 0x42); - break; case SENSOR_GC0307: - msleep(50); - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x22); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - msleep(50); - break; - case SENSOR_MI0360B: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x60); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_MT9V111: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x61); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); + msleep(50); /*fixme: is it useful? */ break; case SENSOR_OM6802: msleep(10); reg_w1(gspca_dev, 0x02, 0x73); - reg_w1(gspca_dev, 0x17, 0x60); + reg17 |= SEN_CLK_EN; + reg_w1(gspca_dev, 0x17, reg17); reg_w1(gspca_dev, 0x01, 0x22); msleep(100); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x17, 0x64); - reg_w1(gspca_dev, 0x17, 0x64); - reg_w1(gspca_dev, 0x01, 0x42); + reg01 = SCL_SEL_OD | S_PDN_INV; + reg17 &= MCK_SIZE_MASK; + reg17 |= 0x04; /* clock / 4 */ + break; + } + reg01 |= SYS_SEL_48M; + reg_w1(gspca_dev, 0x01, reg01); + reg17 |= SEN_CLK_EN; + reg_w1(gspca_dev, 0x17, reg17); + reg01 &= ~S_PWR_DN; /* sensor power on */ + reg_w1(gspca_dev, 0x01, reg01); + reg01 &= ~SYS_SEL_48M; + reg_w1(gspca_dev, 0x01, reg01); + + switch (sd->sensor) { + case SENSOR_HV7131R: + hv7131r_probe(gspca_dev); /*fixme: is it useful? */ + break; + case SENSOR_OM6802: msleep(10); - reg_w1(gspca_dev, 0x01, 0x42); + reg_w1(gspca_dev, 0x01, reg01); i2c_w8(gspca_dev, om6802_init0[0]); i2c_w8(gspca_dev, om6802_init0[1]); msleep(15); reg_w1(gspca_dev, 0x02, 0x71); msleep(150); break; - case SENSOR_OV7630: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0xe2); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_OV7648: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - break; - case SENSOR_PO1030: - case SENSOR_SOI768: - reg_w1(gspca_dev, 0x01, 0x61); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x60); - reg_w1(gspca_dev, 0x01, 0x40); - break; - case SENSOR_PO2030N: - case SENSOR_OV7660: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); - break; case SENSOR_SP80708: - reg_w1(gspca_dev, 0x01, 0x63); - reg_w1(gspca_dev, 0x17, 0x20); - reg_w1(gspca_dev, 0x01, 0x62); - reg_w1(gspca_dev, 0x01, 0x42); msleep(100); reg_w1(gspca_dev, 0x02, 0x62); break; - default: -/* case SENSOR_HV7131R: */ -/* case SENSOR_MI0360: */ -/* case SENSOR_MO4000: */ - reg_w1(gspca_dev, 0x01, 0x43); - reg_w1(gspca_dev, 0x17, 0x61); - reg_w1(gspca_dev, 0x01, 0x42); - if (sd->sensor == SENSOR_HV7131R) - hv7131r_probe(gspca_dev); - break; } /* initialize the sensor */ @@ -2487,30 +2446,11 @@ static int sd_start(struct gspca_dev *gspca_dev) } reg_w1(gspca_dev, 0x18, sn9c1xx[0x18]); switch (sd->sensor) { - case SENSOR_GC0307: - reg17 = 0xa2; - break; - case SENSOR_MT9V111: - case SENSOR_MI0360B: - reg17 = 0xe0; - break; - case SENSOR_ADCM1700: - case SENSOR_OV7630: - reg17 = 0xe2; - break; - case SENSOR_OV7648: - reg17 = 0x20; - break; - case SENSOR_OV7660: - case SENSOR_SOI768: - reg17 = 0xa0; - break; - case SENSOR_PO1030: - case SENSOR_PO2030N: - reg17 = 0xa0; + case SENSOR_OM6802: +/* case SENSOR_OV7648: * fixme: sometimes */ break; default: - reg17 = 0x60; + reg17 |= DEF_EN; break; } reg_w1(gspca_dev, 0x17, reg17); @@ -2557,95 +2497,67 @@ static int sd_start(struct gspca_dev *gspca_dev) init = NULL; mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; - if (mode) - reg1 = 0x46; /* 320x240: clk 48Mhz, video trf enable */ - else - reg1 = 0x06; /* 640x480: clk 24Mhz, video trf enable */ - reg17 = 0x61; /* 0x:20: enable sensor clock */ + reg01 |= SYS_SEL_48M | V_TX_EN; + reg17 &= ~MCK_SIZE_MASK; + reg17 |= 0x02; /* clock / 2 */ switch (sd->sensor) { case SENSOR_ADCM1700: init = adcm1700_sensor_param1; - reg1 = 0x46; - reg17 = 0xe2; break; case SENSOR_GC0307: init = gc0307_sensor_param1; - reg17 = 0xa2; - reg1 = 0x44; + break; + case SENSOR_HV7131R: + case SENSOR_MI0360: + if (mode) + reg01 |= SYS_SEL_48M; /* 320x240: clk 48Mhz */ + else + reg01 &= ~SYS_SEL_48M; /* 640x480: clk 24Mhz */ + reg17 &= ~MCK_SIZE_MASK; + reg17 |= 0x01; /* clock / 1 */ break; case SENSOR_MI0360B: init = mi0360b_sensor_param1; - reg1 &= ~0x02; /* don't inverse pin S_PWR_DN */ - reg17 = 0xe2; break; case SENSOR_MO4000: - if (mode) { -/* reg1 = 0x46; * 320 clk 48Mhz 60fp/s */ - reg1 = 0x06; /* clk 24Mz */ - } else { - reg17 = 0x22; /* 640 MCKSIZE */ -/* reg1 = 0x06; * 640 clk 24Mz (done) */ + if (mode) { /* if 320x240 */ + reg01 &= ~SYS_SEL_48M; /* clk 24Mz */ + reg17 &= ~MCK_SIZE_MASK; + reg17 |= 0x01; /* clock / 1 */ } break; case SENSOR_MT9V111: init = mt9v111_sensor_param1; - if (mode) { - reg1 = 0x04; /* 320 clk 48Mhz */ - } else { -/* reg1 = 0x06; * 640 clk 24Mz (done) */ - reg17 = 0xc2; - } break; case SENSOR_OM6802: init = om6802_sensor_param1; - reg17 = 0x64; /* 640 MCKSIZE */ + if (!mode) { /* if 640x480 */ + reg17 &= ~MCK_SIZE_MASK; + reg17 |= 0x01; /* clock / 4 */ + } break; case SENSOR_OV7630: init = ov7630_sensor_param1; - reg17 = 0xe2; - reg1 = 0x44; break; case SENSOR_OV7648: init = ov7648_sensor_param1; - reg17 = 0x21; -/* reg1 = 0x42; * 42 - 46? */ + reg17 &= ~MCK_SIZE_MASK; + reg17 |= 0x01; /* clock / 1 */ break; case SENSOR_OV7660: init = ov7660_sensor_param1; - if (sd->bridge == BRIDGE_SN9C120) { - if (mode) { /* 320x240 - 160x120 */ - reg17 = 0xa2; - reg1 = 0x44; /* 48 Mhz, video trf eneble */ - } - } else { - reg17 = 0x22; - reg1 = 0x06; /* 24 Mhz, video trf eneble - * inverse power down */ - } break; case SENSOR_PO1030: init = po1030_sensor_param1; - reg17 = 0xa2; - reg1 = 0x44; break; case SENSOR_PO2030N: init = po2030n_sensor_param1; - reg1 = 0x46; - reg17 = 0xa2; break; case SENSOR_SOI768: init = soi768_sensor_param1; - reg1 = 0x44; - reg17 = 0xa2; break; case SENSOR_SP80708: init = sp80708_sensor_param1; - if (mode) { -/*?? reg1 = 0x04; * 320 clk 48Mhz */ - } else { - reg1 = 0x46; /* 640 clk 48Mz */ - reg17 = 0xa2; - } break; } @@ -2695,7 +2607,9 @@ static int sd_start(struct gspca_dev *gspca_dev) setjpegqual(gspca_dev); reg_w1(gspca_dev, 0x17, reg17); - reg_w1(gspca_dev, 0x01, reg1); + reg_w1(gspca_dev, 0x01, reg01); + sd->reg01 = reg01; + sd->reg17 = reg17; sethvflip(gspca_dev); setbrightness(gspca_dev); @@ -2717,41 +2631,64 @@ static void sd_stopN(struct gspca_dev *gspca_dev) { 0xa1, 0x21, 0x76, 0x20, 0x00, 0x00, 0x00, 0x10 }; static const u8 stopsoi768[] = { 0xa1, 0x21, 0x12, 0x80, 0x00, 0x00, 0x00, 0x10 }; - u8 data; - const u8 *sn9c1xx; + u8 reg01; + u8 reg17; - data = 0x0b; + reg01 = sd->reg01; + reg17 = sd->reg17 & ~SEN_CLK_EN; switch (sd->sensor) { + case SENSOR_ADCM1700: case SENSOR_GC0307: - data = 0x29; + case SENSOR_PO2030N: + case SENSOR_SP80708: + reg01 |= LED; + reg_w1(gspca_dev, 0x01, reg01); + reg01 &= ~(LED | V_TX_EN); + reg_w1(gspca_dev, 0x01, reg01); +/* reg_w1(gspca_dev, 0x02, 0x??); * LED off ? */ break; case SENSOR_HV7131R: + reg01 &= ~V_TX_EN; + reg_w1(gspca_dev, 0x01, reg01); i2c_w8(gspca_dev, stophv7131); - data = 0x2b; break; case SENSOR_MI0360: case SENSOR_MI0360B: + reg01 &= ~V_TX_EN; + reg_w1(gspca_dev, 0x01, reg01); +/* reg_w1(gspca_dev, 0x02, 0x40); * LED off ? */ i2c_w8(gspca_dev, stopmi0360); - data = 0x29; break; - case SENSOR_OV7648: - i2c_w8(gspca_dev, stopov7648); - /* fall thru */ case SENSOR_MT9V111: - case SENSOR_OV7630: + case SENSOR_OM6802: case SENSOR_PO1030: - data = 0x29; + reg01 &= ~V_TX_EN; + reg_w1(gspca_dev, 0x01, reg01); + break; + case SENSOR_OV7630: + case SENSOR_OV7648: + reg01 &= ~V_TX_EN; + reg_w1(gspca_dev, 0x01, reg01); + i2c_w8(gspca_dev, stopov7648); + break; + case SENSOR_OV7660: + reg01 &= ~V_TX_EN; + reg_w1(gspca_dev, 0x01, reg01); break; case SENSOR_SOI768: i2c_w8(gspca_dev, stopsoi768); - data = 0x29; break; } - sn9c1xx = sn_tb[sd->sensor]; - reg_w1(gspca_dev, 0x01, sn9c1xx[1]); - reg_w1(gspca_dev, 0x17, sn9c1xx[0x17]); - reg_w1(gspca_dev, 0x01, sn9c1xx[1]); - reg_w1(gspca_dev, 0x01, data); + + reg01 |= SCL_SEL_OD; + reg_w1(gspca_dev, 0x01, reg01); + reg01 |= S_PWR_DN; /* sensor power down */ + reg_w1(gspca_dev, 0x01, reg01); + reg_w1(gspca_dev, 0x17, reg17); + reg01 &= ~SYS_SEL_48M; /* clock 24MHz */ + reg_w1(gspca_dev, 0x01, reg01); + reg01 |= LED; + reg_w1(gspca_dev, 0x01, reg01); /* Don't disable sensor clock as that disables the button on the cam */ /* reg_w1(gspca_dev, 0xf1, 0x01); */ } -- cgit v1.2.3 From 453434cf3fdcd3954bb52460e37d4945a0913d3e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 20 Dec 2010 21:21:49 -0800 Subject: Fix build error in drivers/block/cciss.c .. caused by a missing semi-colon, introduced in commit 0fc13c8995cd ("cciss: fix cciss_revalidate panic"). Reported-by: Stephen Rothwell Reported-by: Thiago Farina Cc: Jens Axboe Signed-off-by: Linus Torvalds --- drivers/block/cciss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 233e06c29ff4..8e0f9256eb58 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2835,7 +2835,7 @@ static int cciss_revalidate(struct gendisk *disk) for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { if (!h->drv[logvol]) - continue + continue; if (memcmp(h->drv[logvol]->LunID, drv->LunID, sizeof(drv->LunID)) == 0) { FOUND = 1; -- cgit v1.2.3