From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 46161] divide error on radeon modprobe
Date: Mon,  3 Sep 2012 21:58:08 +0000 (UTC)
Message-ID: <20120903215808.1870B11FB4B@bugzilla.kernel.org>
References: <bug-46161-2300@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=46161





--- Comment #3 from bjackson0971@gmail.com  2012-09-03 21:58:07 ---
I had to bisect between 3.4.0 and 3.5-rc1 and this was the result.

416a2bd274566a6f607a271f524b2dc0b84d9106 is the first bad commit
commit 416a2bd274566a6f607a271f524b2dc0b84d9106
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu May 31 19:00:25 2012 -0400

    drm/radeon: fixup tiling group size and backendmap on r6xx-r9xx (v4)

    Tiling group size is always 256bits on r6xx/r7xx/r8xx/9xx. Also fix and
    simplify render backend map. This now properly sets up the backend map
    on r6xx-9xx which should improve 3D performance.

    Vadim benchmarked also:
    Some benchmarks on juniper (5750), fullscreen 1920x1080,
    first result - kernel 3.4.0+ (fb21affa), second - with these patches:

    Lightsmark:   91 fps => 123 fps    +35%
    Doom3:        74 fps => 101 fps    +36%

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

:040000 040000 897f0745cc0845c549d44d172c2949cc92b4777c
4c08505d2b214813be5c65e4b87bb809ff027ce2 M    drivers

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