dmaengine: virt-dma: Add synchronization helper function

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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>

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Lars-Peter Clausen 2015-10-20 11:46:29 +02:00 • committed by Vinod Koul

parent b36f09c3c4

commit 2ed086296e

1 changed files with 13 additions and 0 deletions

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drivers/dma/virt-dma.h

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