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| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2014-09-24 11:00:37 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-10-21 23:34:39 +0200 |
| commit | 8a2f38ddfeb526c30b3ec209468172a30a38d996 (patch) | |
| tree | 1106f0d778a920f0dd7dd9a2cc942e6306d245b4 /drivers/acpi/acpi_platform.c | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
| download | lwn-8a2f38ddfeb526c30b3ec209468172a30a38d996.tar.gz lwn-8a2f38ddfeb526c30b3ec209468172a30a38d996.zip | |
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>
Diffstat (limited to 'drivers/acpi/acpi_platform.c')
| -rw-r--r-- | drivers/acpi/acpi_platform.c | 2 |
1 files changed, 2 insertions, 0 deletions
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", |