tree 3af9afe12232ea84f6fe7903854779c223243791
parent 3214658855c01a0dd62f02feb2ce79846524c6a0
author Andy Shevchenko <andriy.shevchenko@linux.intel.com> 1449265764 +0200
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1452172314 +0100

dmaengine: dw: return immediately from IRQ when DMA isn't in use

There is no need to bother the hardware when all channels are idle. We have not
to get any interrupts.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>