linux-kernel - Re: [V4 PATCH 3/6] pci: Generic function for setting up PCI device DMA coherency

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Message-ID: <CAErSpo7NkeXvtFH7jDNeYm6HTZO_G=r77EuJ8vOL4WUKSpQxAQ@mail.gmail.com>
Date:	Sat, 16 May 2015 07:41:14 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
Cc:	Rafael Wysocki <rjw@...ysocki.net>, Len Brown <lenb@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>, thomas.lendacky@....com,
	herbert@...dor.apana.org.au, David Miller <davem@...emloft.net>,
	Arnd Bergmann <arnd@...db.de>,
	Mark Salter <msalter@...hat.com>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Grant Likely <grant.likely@...aro.org>, leo.duran@....com,
	linux-arm <linux-arm-kernel@...ts.infradead.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linaro-acpi@...ts.linaro.org, netdev <netdev@...r.kernel.org>,
	linux-crypto@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	Murali Karicheri <m-karicheri2@...com>
Subject: Re: [V4 PATCH 3/6] pci: Generic function for setting up PCI device
 DMA coherency

On Fri, May 15, 2015 at 4:23 PM, Suravee Suthikulpanit
<Suravee.Suthikulpanit@....com> wrote:
> This patch refactors of_pci_dma_configure() into a more generic
> pci_dma_configure(), which can be reused by non-OF code.
> Then, it adds support for setting up PCI device DMA coherency from
> ACPI _CCA object that should normally be specified in the DSDT node
> of its PCI host bridge..

>From the changelog, it sounds like you might be able to split this
into two patches:

1) Refactor of_pci_dma_configure(), with no functional change
2) Add support for using _CCA

If that's possible, please do so to make this easier to review.

Bjorn
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