RE: linux 3.8-rc3 reboot and shutdown

[Deucher, Alexander]

> -----Original Message-----
> From: Shuah Khan [mailto:shuahkhan@xxxxxxxxx]
> Sent: Thursday, January 17, 2013 6:21 PM
> To: Deucher, Alexander
> Cc: jglisse@xxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: linux 3.8-rc3 reboot and shutdown
> 
> On Thu, Jan 17, 2013 at 12:45 PM, Deucher, Alexander
> <Alexander.Deucher@xxxxxxx> wrote:
> >> -----Original Message-----
> >> From: Shuah Khan [mailto:shuahkhan@xxxxxxxxx]
> >> Sent: Thursday, January 17, 2013 2:03 PM
> >> To: jglisse@xxxxxxxxxx; Deucher, Alexander
> >> Cc: linux-kernel@xxxxxxxxxxxxxxx; Shuah Khan
> >> Subject: linux 3.8-rc3 reboot and shutdown
> >>
> >> Alex,
> >>
> >> I started seeing hang during shutdown and reboot on my laptop that has
> >> ATI radeon VGA.
> >>
> >> 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee
> >> ATI RV620 [Mobility Radeon HD 3400 Series] (prog-if 00 [VGA
> >> controller])
> >>
> >> My bisect narrowed it to the following commit.
> >
> > Should be fixed by this commit:
> > http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-
> 3.8&id=19fc42ed9950d5fe17089c0a928121047c882092
> > Which should be finding its way upstream any day now.
> >
> > Alex
> >
> 
> Alex,
> 
> Applied this patch on 3.8-rc3 and tested it. reboot still hung. The
> only thing that fixes the problem is reverting
> 71e3d1578c954cf29f1f4db1c8930d3574025eb0

Does the attached patch applied in addition to:
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.8&id=19fc42ed9950d5fe17089c0a928121047c882092
fix the issue?

Alex

> 
> I am also seeing DMAR errors on this device starting 3.8-rc3 and I am
> going to start bisecting that soon. Reverting
> 71e3d1578c954cf29f1f4db1c8930d3574025eb0 doesn't help solve the DMAR
> errors.
> 
> -- Shuah

Attachment: 0001-drm-radeon-don-t-attempt-to-soft-reset-DMA-ring-on-r.patch
Description: 0001-drm-radeon-don-t-attempt-to-soft-reset-DMA-ring-on-r.patch