tree 207a0607ec8caac6657d070d5dc1033750849299
parent b36f09c3c441a6e59eab9315032e7d546571de3f
author Lars-Peter Clausen <lars@metafoo.de> 1445334389 +0200
committer Vinod Koul <vinod.koul@intel.com> 1447642732 +0530

dmaengine: virt-dma: Add synchronization helper function

Add a synchronize helper function for the virt-dma library. The function
makes sure that any scheduled descriptor complete callbacks have finished
running before the function returns.

This needs to be called by drivers using virt-dma in their
device_synchronize() callback. Depending on the driver additional
operations might be necessary in addition to calling vchan_synchronize() to
ensure proper synchronization.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>