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Date:	Thu, 3 Jan 2013 09:33:22 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Alex Deucher <alexdeucher@...il.com>
Cc:	Jerome Glisse <j.glisse@...il.com>, Antti Palosaari <crope@....fi>,
	Borislav Petkov <bp@...en8.de>,
	Shuah Khan <shuahkhan@...il.com>,
	Andy Furniss <andyqos@...sn.org>,
	Alex Deucher <alexander.deucher@....com>,
	dri-devel@...ts.freedesktop.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: radeon 0000:02:00.0: GPU lockup CP stall for more than 10000msec

On 2013.01.02 at 18:37 -0500, Alex Deucher wrote:
> On Wed, Jan 2, 2013 at 5:38 PM, Markus Trippelsdorf
> <markus@...ppelsdorf.de> wrote:
> > On 2013.01.02 at 17:31 -0500, Jerome Glisse wrote:
> >> Please affected people can you test if patch :
> >> http://people.freedesktop.org/~glisse/0003-drm-radeon-fix-dma-copy-on-r6xx-r7xx-evergen-ni-si-g.patch
> >>
> >> Fix the issue, you need to make sure you don't have the patch that
> >> disable dma on r6xx ie that line 977-978 & 1061-1062  in radeon_asic.c
> >> is :
> >>  .copy = &r600_copy_dma,
> >>  .copy_ring_index = R600_RING_TYPE_DMA_INDEX,
> >
> > It fixes the issue for me. Thanks.
> 
> The count is actually the count, not count - 1.  The real fix seems to
> be that r6xx requires 2 dw aligned transfers.  The attached patch
> fixes the issue for me.

Yes, this one also works for me. Thanks.

-- 
Markus
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