From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Wed, 24 Sep 2014 08:00:37 +0000 (+0300)
Subject: ACPI / platform: provide default DMA mask
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8a2f38ddfeb526c30b3ec209468172a30a38d996;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ACPI / platform: provide default DMA mask

Most devices are configured for 32-bit DMA addresses.
Setting the mask to 32-bit here removes the need for the
drivers to do it separately.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 2bf9082f7523..8d099e636b15 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -16,6 +16,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 
 #include "internal.h"
@@ -102,6 +103,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev)
 	pdevinfo.res = resources;
 	pdevinfo.num_res = count;
 	pdevinfo.acpi_node.companion = adev;
+	pdevinfo.dma_mask = DMA_BIT_MASK(32);
 	pdev = platform_device_register_full(&pdevinfo);
 	if (IS_ERR(pdev))
 		dev_err(&adev->dev, "platform device creation failed: %ld\n",