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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>
This commit is contained in:
Peter Ujfalusi 2014-09-16 22:45:56 +03:00 committed by Vinod Koul
parent 9e82bf0141
commit b3d09da7e1
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/omap-dma.c
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@ -1017,6 +1017,8 @@ static int omap_dma_resume(struct omap_chan *c)
return -EINVAL; return -EINVAL;
if (c->paused) { if (c->paused) {
mb();
omap_dma_start(c, c->desc); omap_dma_start(c, c->desc);
c->paused = false; c->paused = false;
} }