linux-kernel - [PATCH 4.17 198/336] media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu

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Message-Id: <20180801165036.670145621@linuxfoundation.org>
Date:   Wed,  1 Aug 2018 18:48:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
        Mikhail Ulyanov <mikhail.ulyanov@...entembedded.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Hans Verkuil <hansverk@...co.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 198/336] media: rcar_jpu: Add missing clk_disable_unprepare() on error in jpu_open()

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

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

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

[ Upstream commit 43d0d3c52787df0221d1c52494daabd824fe84f1 ]

Add the missing clk_disable_unprepare() before return from
jpu_open() in the software reset error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
Acked-by: Mikhail Ulyanov <mikhail.ulyanov@...entembedded.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Signed-off-by: Hans Verkuil <hansverk@...co.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/media/platform/rcar_jpu.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/media/platform/rcar_jpu.c
+++ b/drivers/media/platform/rcar_jpu.c
@@ -1280,7 +1280,7 @@ static int jpu_open(struct file *file)
 		/* ...issue software reset */
 		ret = jpu_reset(jpu);
 		if (ret)
-			goto device_prepare_rollback;
+			goto jpu_reset_rollback;
 	}
 
 	jpu->ref_count++;
@@ -1288,6 +1288,8 @@ static int jpu_open(struct file *file)
 	mutex_unlock(&jpu->mutex);
 	return 0;
 
+jpu_reset_rollback:
+	clk_disable_unprepare(jpu->clk);
 device_prepare_rollback:
 	mutex_unlock(&jpu->mutex);
 v4l_prepare_rollback: