From d48eb48cd4d497e2e65c68d3ca3976a8dbfc992e Mon Sep 17 00:00:00 2001 From: Mats Randgaard Date: Thu, 12 Dec 2013 10:13:35 -0300 Subject: [PATCH] [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 912c59e..0bc9e1a 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -1423,6 +1423,11 @@ 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 ((is_analog_input(sd) && bt->pixelclock > 170000000) || -- 2.7.4