[media] v4l2: make vidioc_s_audout const
Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_audout.
Adding const for write-only ioctls was decided during the 2012 Media Workshop.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/ivtv/ivtv-ioctl.c b/drivers/media/pci/ivtv/ivtv-ioctl.c
index 99e35dd..d5cbb61 100644
--- a/drivers/media/pci/ivtv/ivtv-ioctl.c
+++ b/drivers/media/pci/ivtv/ivtv-ioctl.c
@@ -813,11 +813,13 @@
return ivtv_get_audio_output(itv, vin->index, vin);
}
-static int ivtv_s_audout(struct file *file, void *fh, struct v4l2_audioout *vout)
+static int ivtv_s_audout(struct file *file, void *fh, const struct v4l2_audioout *vout)
{
struct ivtv *itv = fh2id(fh)->itv;
- return ivtv_get_audio_output(itv, vout->index, vout);
+ if (itv->card->video_outputs == NULL || vout->index != 0)
+ return -EINVAL;
+ return 0;
}
static int ivtv_enum_input(struct file *file, void *fh, struct v4l2_input *vin)