linux-kernel - Re: DMABOUNCE in pci-rcar

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Message-ID: <CAErSpo5RV=w+DkgHSZZPOFGiEBBxMSraLV3TepYUZwDJuV+Jzg@mail.gmail.com>
Date:	Wed, 26 Feb 2014 12:48:17 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Magnus Damm <damm@...nsource.se>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	Simon Horman <horms+renesas@...ge.net.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm <linux-arm-kernel@...ts.infradead.org>,
	linux-sh@...r.kernel.org, Ben Dooks <ben-linux@...ff.org>
Subject: Re: DMABOUNCE in pci-rcar

On Mon, Feb 24, 2014 at 4:00 AM, Arnd Bergmann <arnd@...db.de> wrote:
> Hi Magnus,
>
> I noticed during randconfig testing that you enabled DMABOUNCE for the
> pci-rcar-gen2 driver as posted in this patch https://lkml.org/lkml/2014/2/5/30
>
> I didn't see the original post unfortunately, but I fear we have to
> revert it and come up with a better solution, ...

Sounds like I should drop the following patches from my pci/host-rcar
branch for now?

  PCI: rcar: Add DMABOUNCE support
  PCI: rcar: Enable BOUNCE in case of HIGHMEM
  PCI: rcar: Make the Kconfig dependencies more generic

Bjorn
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