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[media] v4l2: make vidioc_(un)subscribe_event const

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Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_(un)subscribe_event.
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>
This commit is contained in:
Hans Verkuil
2012-09-04 11:46:09 -03:00
committed by Mauro Carvalho Chehab
parent ec6f432810
commit 85f5fe3962
9 changed files with 15 additions and 15 deletions
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2
include/media/v4l2-ctrls.h
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@@ -546,7 +546,7 @@ int v4l2_ctrl_log_status(struct file *file, void *fh);
/* Can be used as a vidioc_subscribe_event function that just subscribes
control events. */
int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
struct v4l2_event_subscription *sub);
const struct v4l2_event_subscription *sub);
/* Can be used as a poll function that just polls for control events. */
unsigned int v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait);