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Date:	Wed, 20 May 2015 11:03:04 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
Cc:	rjw@...ysocki.net, lenb@...nel.org, will.deacon@....com,
	bhelgaas@...gle.com, thomas.lendacky@....com,
	herbert@...dor.apana.org.au, davem@...emloft.net, arnd@...db.de,
	al.stone@...aro.org, linaro-acpi@...ts.linaro.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, leo.duran@....com,
	hanjun.guo@...aro.org, msalter@...hat.com, grant.likely@...aro.org,
	linux-arm-kernel@...ts.infradead.org, linux-crypto@...r.kernel.org
Subject: Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object

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@...hat.com>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
> CC: Catalin Marinas <catalin.marinas@....com>
> CC: Will Deacon <will.deacon@....com>
> CC: Arnd Bergmann <arnd@...db.de>

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