diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2011-06-14 04:03:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-07 15:06:12 -0300 |
| commit | a6cf90a91551c767bed78a4418c26f41aed60cde (patch) | |
| tree | 125aede7f75d1760654c88669d451656e019b11b /drivers/media | |
| parent | 487833018eb2b969f20457fcf1956b3c6dbfad51 (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')
| -rw-r--r-- | drivers/media/video/v4l2-ioctl.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c index a2e442ab8a5..69e8c6ffcc4 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: |