Commit 834a8be1 authored Dec 12, 2013 by Martin Bugge Committed by Mauro Carvalho Chehab Jan 07, 2014

[media] adv7842: return 0 if no change in s_dv_timings



Return 0 if the new timings are equal to the current timings as
it caused extra cp-loss/lock interrupts.

Signed-off-by: Martin Bugge <marbugge@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

parent 15058aac

drivers/media/i2c/adv7842.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1453,6 +1453,11 @@ static int adv7842_s_dv_timings(struct v4l2_subdev *sd,
		if (state->mode == ADV7842_MODE_SDP)
		return -ENODATA;

		if (v4l2_match_dv_timings(&state->timings, timings, 0)) {
		v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
		return 0;
		}

		bt = &timings->bt;

		if (!v4l2_valid_dv_timings(timings, adv7842_get_dv_timings_cap(sd),