tree ade059660ab99a330c93dffa90e7e4f4972270af
parent 855372c013bbad8369223f7c75242bd3c94f9345
author Andy Shevchenko <andriy.shevchenko@linux.intel.com> 1358344130 +0200
committer Vinod Koul <vinod.koul@intel.com> 1358743761 -0800

dw_dmac: allocate dma descriptors from DMA_COHERENT memory

Currently descriptors are allocated from normal cacheable memory and that slows
down filling the descriptors, as we need to call cache_coherency routines
afterwards. It would be better to allocate memory for these descriptors from
DMA_COHERENT memory. This would make code much cleaner too.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>