device property: Adding DMA Attribute APIs for Generic Devices
authorSuthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com>
Wed, 28 Oct 2015 22:50:49 +0000 (15:50 -0700)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Sat, 7 Nov 2015 00:29:22 +0000 (01:29 +0100)
commite5e558644bbb23cad03c586703331b8bcd9e0e6c
tree8e183e85861b37394bfa6a64b2352848325e0b6b
parentb84f196d963c3159329f72ca1913b08679004a43
device property: Adding DMA Attribute APIs for Generic Devices

The function device_dma_is_coherent() does not sufficiently
communicate device DMA attributes. Instead, this patch introduces
device_get_dma_attr(), which returns enum dev_dma_attr.
It replaces the acpi_check_dma(), which will be removed in
subsequent patch.

This also provides a convenient function, device_dma_supported(),
to check DMA support of the specified device.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/base/property.c
include/linux/property.h
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