[PATCH v2 3/6] dma: coh901318: avoid unbalanced locking

[Andy Shevchenko]

In case the len is 0 we must return without trying to unlock the lock that was
not locked.

Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar at linaro.org>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: linux-arm-kernel at lists.infradead.org
---
 drivers/dma/coh901318_lli.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/coh901318_lli.c b/drivers/dma/coh901318_lli.c
index 780e042..fe9cc5e 100644
--- a/drivers/dma/coh901318_lli.c
+++ b/drivers/dma/coh901318_lli.c
@@ -61,7 +61,7 @@ coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
 	dma_addr_t phy;
 
 	if (len == 0)
-		goto err;
+		return NULL;
 
 	spin_lock(&pool->lock);
 
-- 
1.7.10.4