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 2bf9082..8d099e6 100644 (file)
--- 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",