[media] v4l2: make vidioc_s_audio const

Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_audio.
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>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 3eef4de0ca33..babbe09527cd 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -167,7 +167,7 @@ struct v4l2_ioctl_ops {
         int (*vidioc_g_audio)          (struct file *file, void *fh,
                                         struct v4l2_audio *a);
         int (*vidioc_s_audio)          (struct file *file, void *fh,
-                                        struct v4l2_audio *a);
+                                        const struct v4l2_audio *a);
 
         /* Audio out ioctls */
         int (*vidioc_enumaudout)       (struct file *file, void *fh,