diff options
| author | Jonathan Corbet <corbet-v4l@lwn.net> | 2006-09-25 16:25:37 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-10-13 13:23:26 -0700 |
| commit | d3d1445e23803ea576aa8b77beb8dfa6066bb6dc (patch) | |
| tree | 02ec6c79c5391a1df673901b99768ccc400813ad | |
| parent | fad2a56d330427a5983d3fa57690ee5dc36c17bf (diff) | |
Fix VIDIOC_ENUMSTD bug
The v4l2 API documentation for VIDIOC_ENUMSTD says:
To enumerate all standards applications shall begin at index
zero, incrementing by one until the driver returns EINVAL.
The actual code, however, tests the index this way:
if (index<=0 || index >= vfd->tvnormsize) {
ret=-EINVAL;
So any application which passes in index=0 gets EINVAL right off the bat
- and, in fact, this is what happens to mplayer. So I think the
following patch is called for, and maybe even appropriate for a 2.6.18.x
stable release.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/media/video/videodev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c index 88bf2af2a0e7..edd7b83c3464 100644 --- a/drivers/media/video/videodev.c +++ b/drivers/media/video/videodev.c @@ -836,7 +836,7 @@ static int __video_do_ioctl(struct inode *inode, struct file *file, break; } - if (index<=0 || index >= vfd->tvnormsize) { + if (index < 0 || index >= vfd->tvnormsize) { ret=-EINVAL; break; } |