mmc: sh_mmcif: reset DMA completion immediately before starting DMA
DMA completion can be signalled from the DMA callback and from the error handler. If both are called, the completion struct can enter an inconsistent state. To prevent this move completion initialisation immediately before activating DMA. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NChris Ball <cjb@laptop.org>
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