diff options
| author | Jean-Francois Moine <moinejf@free.fr> | 2009-12-15 09:16:04 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-26 19:10:26 +0100 |
| commit | db870875c0e29ba051e58c848e1877df8e85b49f (patch) | |
| tree | 51ecf35bab8b9436712ba1404a400fb7d673d7da /drivers/media/video | |
| parent | V4L/DVB (13856): ir-keytable: simplify and avoid a warning (diff) | |
| download | linux-db870875c0e29ba051e58c848e1877df8e85b49f.tar.xz linux-db870875c0e29ba051e58c848e1877df8e85b49f.zip | |
V4L/DVB (13865): gspca - main: Optimize code.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 25 | ||||
| -rw-r--r-- | drivers/media/video/gspca/gspca.h | 1 |
2 files changed, 12 insertions, 14 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index bd6214d4ab3b..0e6a4ec0fec9 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -108,11 +108,8 @@ static const struct vm_operations_struct gspca_vm_ops = { struct gspca_frame *gspca_get_i_frame(struct gspca_dev *gspca_dev) { struct gspca_frame *frame; - int i; - i = gspca_dev->fr_i; - i = gspca_dev->fr_queue[i]; - frame = &gspca_dev->frame[i]; + frame = gspca_dev->cur_frame; if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) != V4L2_BUF_FLAG_QUEUED) return NULL; @@ -534,26 +531,22 @@ static int create_urbs(struct gspca_dev *gspca_dev, nurbs = 1; } - gspca_dev->nurbs = nurbs; for (n = 0; n < nurbs; n++) { urb = usb_alloc_urb(npkt, GFP_KERNEL); if (!urb) { err("usb_alloc_urb failed"); - destroy_urbs(gspca_dev); return -ENOMEM; } + gspca_dev->urb[n] = urb; urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev, bsize, GFP_KERNEL, &urb->transfer_dma); if (urb->transfer_buffer == NULL) { - usb_free_urb(urb); - err("usb_buffer_urb failed"); - destroy_urbs(gspca_dev); + err("usb_buffer_alloc failed"); return -ENOMEM; } - gspca_dev->urb[n] = urb; urb->dev = gspca_dev->dev; urb->context = gspca_dev; urb->transfer_buffer_length = bsize; @@ -585,6 +578,7 @@ static int create_urbs(struct gspca_dev *gspca_dev, static int gspca_init_transfer(struct gspca_dev *gspca_dev) { struct usb_host_endpoint *ep; + struct urb *urb; int n, ret; if (mutex_lock_interruptible(&gspca_dev->usb_lock)) @@ -615,8 +609,10 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) for (;;) { PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt); ret = create_urbs(gspca_dev, ep); - if (ret < 0) + if (ret < 0) { + destroy_urbs(gspca_dev); goto out; + } /* clear the bulk endpoint */ if (gspca_dev->cam.bulk) @@ -636,8 +632,11 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) break; /* submit the URBs */ - for (n = 0; n < gspca_dev->nurbs; n++) { - ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL); + for (n = 0; n < MAX_NURBS; n++) { + urb = gspca_dev->urb[n]; + if (urb == NULL) + break; + ret = usb_submit_urb(urb, GFP_KERNEL); if (ret < 0) break; } diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h index 59c7941da999..f0b4cbc33bf3 100644 --- a/drivers/media/video/gspca/gspca.h +++ b/drivers/media/video/gspca/gspca.h @@ -187,7 +187,6 @@ struct gspca_dev { char users; /* number of opens */ char present; /* device connected */ char nbufread; /* number of buffers for read() */ - char nurbs; /* number of allocated URBs */ char memory; /* memory type (V4L2_MEMORY_xxx) */ __u8 iface; /* USB interface number */ __u8 alt; /* USB alternate setting */ |