[PATCH v2 1/5] media/v4l2-ctrls: volatiles should not generate CH_VALUE

[Ricardo Ribalda Delgado]

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@xxxxxxxxx>
---
v2: By Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>

Fix CodeStyle (sorry :S)
 drivers/media/v4l2-core/v4l2-ctrls.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 45c5b47..2ebc33e 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1609,6 +1609,15 @@ static int cluster_changed(struct v4l2_ctrl *master)
 
 		if (ctrl == NULL)
 			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++)
 			ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
 				ctrl->p_cur, ctrl->p_new);
-- 
2.1.4

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