From: Philippe Retornaz <philippe.retornaz@epfl.ch>
Date: Mon, 14 Oct 2013 08:45:17 +0000 (+0100)
Subject: ARM: 7857/1: dma: imx-sdma: setup dma mask
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=42536b9f9ce38b07ac213c5f4550301f9a0d251d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ARM: 7857/1: dma: imx-sdma: setup dma mask

The dma mask is not configured in the current code.
This was triggered by soc-dmaengine-pcm which allocate the dma
buffers with the imx-sdma as device.
This commit fix audio on imx31.

Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index fc43603cf0bb..c1fd504cae28 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1432,6 +1432,10 @@ static int __init sdma_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
 	sdma = kzalloc(sizeof(*sdma), GFP_KERNEL);
 	if (!sdma)
 		return -ENOMEM;