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authorHans Verkuil <hans.verkuil@cisco.com>2011-06-14 04:03:26 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-07-07 15:06:12 -0300
commita6cf90a91551c767bed78a4418c26f41aed60cde (patch)
tree125aede7f75d1760654c88669d451656e019b11b /drivers/media/video/v4l2-ioctl.c
parent487833018eb2b969f20457fcf1956b3c6dbfad51 (diff)
[media] v4l2-ioctl.c: check for valid tuner type in S_HW_FREQ_SEEK
Prohibit attempts to change the tuner to a type that is different from the device node the ioctl is called from. I.e. the type must be RADIO for a radio node and ANALOG_TV for a video/vbi node. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-ioctl.c')
-rw-r--r--drivers/media/video/v4l2-ioctl.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index a2e442ab8a5b..69e8c6ffcc49 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -1946,13 +1946,19 @@ static long __video_do_ioctl(struct file *file,
case VIDIOC_S_HW_FREQ_SEEK:
{
struct v4l2_hw_freq_seek *p = arg;
+ enum v4l2_tuner_type type;
if (!ops->vidioc_s_hw_freq_seek)
break;
+ type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
+ V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
dbgarg(cmd,
- "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n",
- p->tuner, p->type, p->seek_upward, p->wrap_around);
- ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
+ "tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u\n",
+ p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing);
+ if (p->type != type)
+ ret = -EINVAL;
+ else
+ ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
break;
}
case VIDIOC_ENUM_FRAMESIZES:

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