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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2014-09-16 21:45:56 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-09-23 14:52:54 +0200 |
| commit | b3d09da7e1771decc6833d1fa662bf994948c8e6 (patch) | |
| tree | c22b40698ca82124e706b83c7fff2d3d990dc4e2 /drivers/dma/omap-dma.c | |
| parent | Linux 3.17-rc5 (diff) | |
| download | linux-b3d09da7e1771decc6833d1fa662bf994948c8e6.tar.xz linux-b3d09da7e1771decc6833d1fa662bf994948c8e6.zip | |
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>
Diffstat (limited to 'drivers/dma/omap-dma.c')
| -rw-r--r-- | drivers/dma/omap-dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 4cf7d9a950d7..c01ea505ee7c 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; } |