linux-kernel - [PATCH 3.16.y-ckt 111/118] mmc: block: Add missing mmc_blk_put() in power_ro_lock

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Date:	Wed, 12 Aug 2015 09:56:53 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Tomas Winkler <tomas.winkler@...el.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 111/118] mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()

3.16.7-ckt16 -stable review patch.  If anyone has any objections, please let me know.

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

From: Tomas Winkler <tomas.winkler@...el.com>

commit 9098f84cced870f54d8c410dd2444cfa61467fa0 upstream.

Enclosing mmc_blk_put() is missing in power_ro_lock_show() sysfs handler,
let's add it.

Fixes: add710eaa886 ("mmc: boot partition ro lock support")
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 drivers/mmc/card/block.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 7ec3c79852e5..96d2f08a2516 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -205,6 +205,8 @@ static ssize_t power_ro_lock_show(struct device *dev,
 
 	ret = snprintf(buf, PAGE_SIZE, "%d\n", locked);
 
+	mmc_blk_put(md);
+
 	return ret;
 }
 
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