linux-kernel - [PATCH 4.4 094/137] [media] v4l: vsp1: Set the SRU CTRL0 register when starting the stream

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Date:	Mon, 18 Apr 2016 11:29:16 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Subject: [PATCH 4.4 094/137] [media] v4l: vsp1: Set the SRU CTRL0 register when starting the stream

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

commit f6acfcdc5b8cdc9ddd53a459361820b9efe958c4 upstream.

Commit 58f896d859ce ("[media] v4l: vsp1: sru: Make the intensity
controllable during streaming") refactored the stream start code and
removed the SRU CTRL0 register write by mistake. Add it back.

Fixes: 58f896d859ce ("[media] v4l: vsp1: sru: Make the intensity controllable during streaming")

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/platform/vsp1/vsp1_sru.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/media/platform/vsp1/vsp1_sru.c
+++ b/drivers/media/platform/vsp1/vsp1_sru.c
@@ -154,6 +154,7 @@ static int sru_s_stream(struct v4l2_subd
 	mutex_lock(sru->ctrls.lock);
 	ctrl0 |= vsp1_sru_read(sru, VI6_SRU_CTRL0)
 	       & (VI6_SRU_CTRL0_PARAM0_MASK | VI6_SRU_CTRL0_PARAM1_MASK);
+	vsp1_sru_write(sru, VI6_SRU_CTRL0, ctrl0);
 	mutex_unlock(sru->ctrls.lock);
 
 	vsp1_sru_write(sru, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);