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Message-ID: <1410896757-3848-2-git-send-email-peter.ujfalusi@ti.com> Date: Tue, 16 Sep 2014 22:45:56 +0300 From: Peter Ujfalusi <peter.ujfalusi@...com> To: <vinod.koul@...el.com>, <dan.j.williams@...el.com>, Russell King - ARM Linux <linux@....linux.org.uk> CC: <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org> Subject: [PATCH v3 1/2] 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@...com> Acked-by: Russell King <rmk+kernel@....linux.org.uk> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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