[03/67] ACPI: platform: provide default DMA mask

Message ID 1413566234-13537-4-git-send-email-balbi@ti.com
State New
Headers show

Commit Message

Felipe Balbi Oct. 17, 2014, 5:16 p.m.
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>

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.

Acked-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/acpi/acpi_platform.c | 2 ++
 1 file changed, 2 insertions(+)

Patch

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",