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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-01-08 02:49:25 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-01-29 11:35:36 +0100 |
| commit | 24c3c41584b9331be5e0d18d46943729a5bd2d4e (patch) | |
| tree | 1a94f7f4a0134abb4acd7647462596853614582c /drivers/media/video | |
| parent | Linux 2.6.29-rc3 (diff) | |
| download | linux-24c3c41584b9331be5e0d18d46943729a5bd2d4e.tar.xz linux-24c3c41584b9331be5e0d18d46943729a5bd2d4e.zip | |
V4L/DVB (10192): em28xx: fix input selection
em28xx were trying to access the third input entry, even for boards that
don't support it.
This patch reviews the input mux selection fixing this bug and a few
other troubles, like not validating the input on one userspace ioctl.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c index 416b691c33c1..d40650655f74 100644 --- a/drivers/media/video/em28xx/em28xx-video.c +++ b/drivers/media/video/em28xx/em28xx-video.c @@ -886,10 +886,10 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i) if (0 == INPUT(i)->type) return -EINVAL; - mutex_lock(&dev->lock); - - video_mux(dev, i); + dev->ctl_input = i; + mutex_lock(&dev->lock); + video_mux(dev, dev->ctl_input); mutex_unlock(&dev->lock); return 0; } @@ -939,6 +939,12 @@ static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) struct em28xx_fh *fh = priv; struct em28xx *dev = fh->dev; + + if (a->index >= MAX_EM28XX_INPUT) + return -EINVAL; + if (0 == INPUT(a->index)->type) + return -EINVAL; + mutex_lock(&dev->lock); dev->ctl_ainput = INPUT(a->index)->amux; @@ -1957,9 +1963,22 @@ int em28xx_register_analog_devices(struct em28xx *dev) (EM28XX_VERSION_CODE >> 16) & 0xff, (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); + /* set default norm */ + dev->norm = em28xx_video_template.current_norm; + dev->width = norm_maxw(dev); + dev->height = norm_maxh(dev); + dev->interlaced = EM28XX_INTERLACED_DEFAULT; + dev->hscale = 0; + dev->vscale = 0; + dev->ctl_input = 0; + /* Analog specific initialization */ dev->format = &format[0]; - video_mux(dev, 0); + video_mux(dev, dev->ctl_input); + + /* Audio defaults */ + dev->mute = 1; + dev->volume = 0x1f; /* enable vbi capturing */ @@ -1967,24 +1986,10 @@ int em28xx_register_analog_devices(struct em28xx *dev) /* em28xx_write_reg(dev, EM28XX_R0F_XCLK, 0x80); clk register */ em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51); - dev->mute = 1; /* maybe not the right place... */ - dev->volume = 0x1f; - em28xx_set_outfmt(dev); em28xx_colorlevels_set_default(dev); em28xx_compression_disable(dev); - /* set default norm */ - dev->norm = em28xx_video_template.current_norm; - dev->width = norm_maxw(dev); - dev->height = norm_maxh(dev); - dev->interlaced = EM28XX_INTERLACED_DEFAULT; - dev->hscale = 0; - dev->vscale = 0; - - /* FIXME: This is a very bad hack! Not all devices have TV on input 2 */ - dev->ctl_input = 2; - /* allocate and fill video video_device struct */ dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); if (!dev->vdev) { |