* [PATCH] mmc: fix refcount leak in power_ro_lock_show
@ 2013-04-28 0:06 Namjae Jeon
0 siblings, 0 replies; only message in thread
From: Namjae Jeon @ 2013-04-28 0:06 UTC (permalink / raw)
To: cjb; +Cc: linux-mmc, linux-kernel, Namjae Jeon, Namjae Jeon, Vivek Trivedi
From: Namjae Jeon <namjae.jeon@samsung.com>
when user does
cat /sys/block/mmcblk0boot0/ro_lock_until_next_power_on
power_ro_lock_show increments md->usage by calling mmc_blk_get
but it forgets to call mmc_blk_put to restore md->usage
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Vivek Trivedi <t.vivek@samsung.com>
---
drivers/mmc/card/block.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index e12a03c..ae8e1de 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -201,6 +201,7 @@ static ssize_t power_ro_lock_show(struct device *dev,
locked = 1;
ret = snprintf(buf, PAGE_SIZE, "%d\n", locked);
+ mmc_blk_put(md);
return ret;
}
--
1.7.9.5
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2013-04-28 0:06 [PATCH] mmc: fix refcount leak in power_ro_lock_show Namjae Jeon
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