Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-15 08:31:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

V4L/DVB (12948): v4l1-compat: fix VIDIOC_G_STD handling

Browse Source 
The VIDIOC_G_STD ioctl may not be present in the case of radio receivers.
In that case G_STD will return an error. The v4l1-compat layer should not
attempt to propagate that error to the caller, instead it should be
ignored.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2009-09-15 08:08:20 -03:00 committed by Mauro Carvalho Chehab
parent 3a360ced7b
commit 707ca1e30f
1 changed files with 6 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/media/video/v4l1-compat.c
View File

@ -564,10 +564,9 @@ static noinline long v4l1_compat_get_input_info(
break;
}
chan->norm = 0;
err = drv(file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %ld\n", err);
if (err == 0) {
/* Note: G_STD might not be present for radio receivers,
* so we should ignore any errors. */
if (drv(file, VIDIOC_G_STD, &sid) == 0) {
if (sid & V4L2_STD_PAL)
chan->norm = VIDEO_MODE_PAL;
if (sid & V4L2_STD_NTSC)
@ -776,10 +775,9 @@ static noinline long v4l1_compat_get_tuner(
tun->flags |= VIDEO_TUNER_SECAM;
}
err = drv(file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %ld\n", err);
if (err == 0) {
/* Note: G_STD might not be present for radio receivers,
* so we should ignore any errors. */
if (drv(file, VIDIOC_G_STD, &sid) == 0) {
if (sid & V4L2_STD_PAL)
tun->mode = VIDEO_MODE_PAL;
if (sid & V4L2_STD_NTSC)