linux-kernel - [resend PATCH 1/3] ACPI / platform: provide default DMA mask

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Message-Id: <1411545639-18741-2-git-send-email-heikki.krogerus@linux.intel.com>
Date:	Wed, 24 Sep 2014 11:00:37 +0300
From:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:	Felipe Balbi <balbi@...com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>, linux-usb@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [resend PATCH 1/3] 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@...ux.intel.com>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
---
 drivers/acpi/acpi_platform.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 2bf9082..8d099e6 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",
-- 
2.1.0

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