[V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

[Catalin Marinas]

On Fri, May 15, 2015 at 04:23:10PM -0500, Suravee Suthikulpanit wrote:
> From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf,
> section 6.2.17 _CCA states that ARM platforms require ACPI _CCA
> object to be specified for DMA-cabpable devices. This patch introduces
> ACPI_MUST_HAVE_CCA in arm64 Kconfig to specify such requirement.
> 
> In case _CCA is missing, arm64 would assign dummy_dma_ops
> to disable DMA capability of the device.
> 
> Signed-off-by: Mark Salter <msalter at redhat.com>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit at amd.com>
> CC: Catalin Marinas <catalin.marinas at arm.com>
> CC: Will Deacon <will.deacon at arm.com>
> CC: Arnd Bergmann <arnd at arndb.de>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>