Re: [PATCH 2/4] ACPI / platform: provide default DMA mask

Heikki Krogerus
2014-09-23T12:17:12Z

On Wed, Aug 20, 2014 at 02:55:26PM +0300, Heikki Krogerus wrote:
> 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.

Rafael, is this OK?

> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> ---
> 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

--
heikki