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Fix unbalanced mutex in dma_pool_create().

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dma_pool_create() needs to unlock the mutex in error case.  The bug was
introduced in the 3.16 by commit cc6b664aa2 ("mm/dmapool.c: remove
redundant NULL check for dev in dma_pool_create()")/

Signed-off-by: Krzysztof Hałasa <khc@piap.pl>
Cc: stable@vger.kernel.org  # v3.16
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Krzysztof Hałasa 2014-09-18 15:12:02 +02:00 committed by Linus Torvalds
parent bd26a74e93
commit 153a9f131f
1 changed files with 1 additions and 1 deletions
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2
mm/dmapool.c
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@ -176,7 +176,7 @@ struct dma_pool *dma_pool_create(const char *name, struct device *dev,
if (list_empty(&dev->dma_pools) &&
device_create_file(dev, &dev_attr_pools)) {
kfree(retval);
return NULL;
retval = NULL;
} else
list_add(&retval->pools, &dev->dma_pools);
mutex_unlock(&pools_lock);