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authorJonathan Corbet <corbet-v4l@lwn.net>2006-09-25 23:25:37 (GMT)
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 00:38:36 (GMT)
commitb7de567bf3187ccf776e2fe0e241593cdcba5459 (patch)
treec9420517d6a133121d13395dd21b729e6b26f40a
parent1cc5f7142eca352109895fe20b1fc6405dd17727 (diff)
downloadlinux-fsl-qoriq-b7de567bf3187ccf776e2fe0e241593cdcba5459.tar.xz
[PATCH] 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> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/media/video/videodev.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 88bf2af..edd7b83 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;
}