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Commit 153a9f13 authored by Krzysztof Hałasa's avatar Krzysztof Hałasa Committed by Linus Torvalds
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Fix unbalanced mutex in dma_pool_create(). 



dma_pool_create() needs to unlock the mutex in error case.  The bug was
introduced in the 3.16 by commit cc6b664a ("mm/dmapool.c: remove
redundant NULL check for dev in dma_pool_create()")/

Signed-off-by: default avatarKrzysztof Hałasa <khc@piap.pl>
Cc: stable@vger.kernel.org  # v3.16
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bd26a74e

mm/dmapool.c

+1 −1
Original line number Diff line number Diff line
@@ -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);