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dma: coh901318: avoid unbalanced locking

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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>
This commit is contained in:
Andy Shevchenko 2013-02-14 11:00:17 +02:00 committed by Vinod Koul
parent 978c4172af
commit 4168d0d9d3
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/coh901318_lli.c
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@ -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);