From b0e56c1a424b2a287b5f8f9ba50e99adf9a56530 Mon Sep 17 00:00:00 2001 From: Mats Randgaard Date: Thu, 12 Dec 2013 10:13:35 -0300 Subject: [PATCH] upstream: [media] adv7604: return immediately if the new timings are equal to what is configured Signed-off-by: Mats Randgaard Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/adv7604.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index ce3b51b..3ae8ec5 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -1378,6 +1378,11 @@ static int adv7604_s_dv_timings(struct v4l2_subdev *sd, if (!timings) return -EINVAL; + 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 ((!DIGITAL_INPUT && bt->pixelclock > 170000000) || -- 2.7.4