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@xxxxxx>
Acked-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
---
drivers/dma/omap-dma.c | 2 ++
1 file changed, 2 insertions(+)
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;
}
--
2.1.0
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