From 4168d0d9d304f184f786b1f00750557b8e09453c Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Thu, 14 Feb 2013 11:00:17 +0200
Subject: [PATCH] dma: coh901318: avoid unbalanced locking

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@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 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 780e0429b38c..fe9cc5eeddae 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);
 
-- 
2.39.5