linux-kernel - [PATCH] drivers/usb : Set DMA

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Message-ID: <1450351955-32758-1-git-send-email-sriram.dash@freescale.com>
Date:	Thu, 17 Dec 2015 17:02:35 +0530
From:	Sriram Dash <sriram.dash@...escale.com>
To:	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
CC:	<stern@...land.harvard.edu>, <gregkh@...uxfoundation.org>,
	<ramneek.mehresh@...escale.com>, <rajesh.bhagat@...escale.com>,
	Sriram Dash <sriram.dash@...escale.com>
Subject: [PATCH] drivers/usb : Set DMA_MASK of usb platform device

Set DMA_MASK of usb platform device properly.

Signed-off-by: Sriram Dash <sriram.dash@...escale.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@...escale.com>
---
 drivers/usb/host/fsl-mph-dr-of.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index 0c38265..1044b0f 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -17,6 +17,7 @@
 #include <linux/of_platform.h>
 #include <linux/clk.h>
 #include <linux/module.h>
+#include <linux/dma-mapping.h>
 
 struct fsl_usb2_dev_data {
 	char *dr_mode;		/* controller mode */
@@ -96,7 +97,11 @@ static struct platform_device *fsl_usb2_device_register(
 	pdev->dev.parent = &ofdev->dev;
 
 	pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
-	*pdev->dev.dma_mask = *ofdev->dev.dma_mask;
+
+	if (!pdev->dev.dma_mask)
+		pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
+	else
+		dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
 	if (retval)
-- 
2.1.0

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