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| author | Michael Hunold <michael@mihu.de> | 2010-03-13 11:45:46 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-06 19:19:04 -0300 |
| commit | 84a1d9c83e3e13991b958c897b6e9d6a5e4ce76d (patch) | |
| tree | 9ea7ced54b381d2d0cb89d30464fcea1e36a7a3d | |
| parent | ab51bec1f852f6b858a26e745b32a79cd1a67eec (diff) | |
| download | linux-84a1d9c83e3e13991b958c897b6e9d6a5e4ce76d.tar.bz2 | |
V4L/DVB: saa7146: fix up bytesperline if it is an impossible value
xawtv using DGA on a Radeon graphics card provides bogus
values to S_FBUF, which will then screw up overlay video:
https://bugs.launchpad.net/ubuntu/+source/xawtv/+bug/499734
This fixes the bytesperline value if it is off completely.
Signed-off-by: Michael Hunold <michael@mihu.de>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/common/saa7146_video.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/media/common/saa7146_video.c b/drivers/media/common/saa7146_video.c index 5ed75263340a..b8b2c551a1e2 100644 --- a/drivers/media/common/saa7146_video.c +++ b/drivers/media/common/saa7146_video.c @@ -558,9 +558,11 @@ static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *f /* ok, accept it */ vv->ov_fb = *fb; vv->ov_fmt = fmt; - if (0 == vv->ov_fb.fmt.bytesperline) - vv->ov_fb.fmt.bytesperline = - vv->ov_fb.fmt.width * fmt->depth / 8; + + if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) { + vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8; + DEB_D(("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline)); + } mutex_unlock(&dev->lock); return 0; |