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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2014-09-16 22:45:56 +0300
committerVinod Koul <vinod.koul@intel.com>2014-09-23 18:22:54 +0530
commitb3d09da7e1771decc6833d1fa662bf994948c8e6 (patch)
treec22b40698ca82124e706b83c7fff2d3d990dc4e2
parent9e82bf014195d6f0054982c463575cdce24292be (diff)
downloadop-kernel-dev-b3d09da7e1771decc6833d1fa662bf994948c8e6.zip
op-kernel-dev-b3d09da7e1771decc6833d1fa662bf994948c8e6.tar.gz
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>
-rw-r--r--drivers/dma/omap-dma.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c
index 4cf7d9a..c01ea50 100644
--- a/drivers/dma/omap-dma.c
+++ b/drivers/dma/omap-dma.c
@@ -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;
}
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