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Subject: Re: [PATCH 4.4 34/46] drm/ast: Fixed system hanged if disable P2A
From: Ben Hutchings <ben.hutchings@codethink.co.uk>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Y.C. Chen" <yc_chen@aspeedtech.com>, Dave Airlie <airlied@redhat.com>,
        Russell Currey <ruscur@russell.cc>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Sasha Levin <alexander.levin@verizon.com>
Date: Thu, 29 Jun 2017 14:45:45 +0100
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         <20170615175219.904190183@linuxfoundation.org>
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On Thu, 2017-06-15 at 19:52 +0200, Greg Kroah-Hartman wrote:
> 4.4-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: "Y.C. Chen" <yc_chen@aspeedtech.com>
> 
> 
> [ Upstream commit 6c971c09f38704513c426ba6515f22fb3d6c87d5 ]
> 
> The original ast driver will access some BMC configuration through P2A bridge
> that can be disabled since AST2300 and after.
> It will cause system hanged if P2A bridge is disabled.
> Here is the update to fix it.
[...]

Shouldn't this be followed by:

commit 71f677a91046599ece96ebab21df956ce909c456
Author: Russell Currey <ruscur@russell.cc>
Date:   Fri Feb 17 14:33:01 2017 +1100

    drm/ast: Handle configuration without P2A bridge

?

Ben.

-- 
Ben Hutchings
Software Developer, Codethink Ltd.