linux-kernel - Re: [PATCH] Revert "drm/exynos: IOMMU support should not be selectable by user"

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Message-ID: <20150217202051.GA19818@opensource.wolfsonmicro.com>
Date:	Tue, 17 Feb 2015 20:20:51 +0000
From:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To:	Javier Martinez Canillas <javier@...hile0.org>
Cc:	Inki Dae <inki.dae@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	sw0312.kim@...sung.com, Kyungmin Park <kyungmin.park@...sung.com>,
	David Airlie <airlied@...ux.ie>, Kukjin Kim <kgene@...nel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Revert "drm/exynos: IOMMU support should not be
	selectable by user"

On Tue, Feb 17, 2015 at 09:18:28PM +0100, Javier Martinez Canillas wrote:
> Hello Charles,
> 
> On Tue, Feb 17, 2015 at 5:58 PM, Charles Keepax
> <ckeepax@...nsource.wolfsonmicro.com> wrote:
> > This reverts commit 8dcc14f82f06fce997e35f4c77ced9d4ed192f31.
> >
> > This patch causes this error on Arndale:
> 
> IMHO the commit you are referring is correct so it should not be
> reverted but I also had the same error on different boards (Exynos5250
> Snow, Exynos5420 Peach Pit and Exynos5800 Peach Pi).
> 
> So I posted a patch [0] today to disable Exnos IOMMU support in
> exynos_defconfig until these issues gets fixed.
> 
> Best regards,
> Javier
> 
> [0]: https://lkml.org/lkml/2015/2/17/163

I agree your patch is the better fix.

Thanks,
Charles
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