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[media] media/v4l2-ctrls: volatiles should not generate CH_VALUE

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Volatile controls should not generate CH_VALUE events.

Set has_changed to false to prevent this happening.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Ricardo Ribalda 2015-03-20 10:30:46 -03:00 • committed by Mauro Carvalho Chehab
parent 5190931d1d
commit b08d8d26f4
1 changed files with 9 additions and 0 deletions
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9
drivers/media/v4l2-core/v4l2-ctrls.c
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@ -1609,6 +1609,15 @@ static int cluster_changed(struct v4l2_ctrl *master)
if (ctrl == NULL) if (ctrl == NULL)
continue; continue;
/*
* Set has_changed to false to avoid generating
* the event V4L2_EVENT_CTRL_CH_VALUE
*/
if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
ctrl->has_changed = false;
continue;
}
for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
ctrl->p_cur, ctrl->p_new); ctrl->p_cur, ctrl->p_new);