Commit b1d6ab1a authored Nov 23, 2015 by Lars-Peter Clausen Committed by Vinod Koul Dec 05, 2015

dmaengine: Add might_sleep() to dmaengine_synchronize()

Implementations of dmaengine_synchronize() are allowed to sleep, hence the
function must not be called to from atomic context. Add might_sleep() to
dmaengine_synchronize() to make it easier to detect non-compliant callers.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent bc0e7345

include/linux/dmaengine.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -895,6 +895,8 @@ static inline int dmaengine_terminate_async(struct dma_chan *chan)
		*/
		static inline void dmaengine_synchronize(struct dma_chan *chan)
		{
		might_sleep();

		if (chan->device->device_synchronize)
		chan->device->device_synchronize(chan);
		}