tree 7385fb072673f5934cb08f79faeecc9829a32674
parent 978c4172af48f0adc082f8b1d94acb817d947730
author Andy Shevchenko <andriy.shevchenko@linux.intel.com> 1360832417 +0200
committer Vinod Koul <vinod.koul@intel.com> 1360852253 +0530

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>