Commit b3d09da7 authored Sep 16, 2014 by Peter Ujfalusi Committed by Vinod Koul Sep 23, 2014

dmaengine: omap-dma: Add memory barrier to dma_resume path



Add mb() call to resume path to ensure the necessary barrier.
Resume can happen after waking up from suspend for example.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent 9e82bf01

drivers/dma/omap-dma.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1017,6 +1017,8 @@ static int omap_dma_resume(struct omap_chan *c)
		return -EINVAL;

		if (c->paused) {
		mb();

		omap_dma_start(c, c->desc);
		c->paused = false;
		}