[Bug 56680] New: [Bisected] xf86-video-ati git breaks X with no screens found

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=56680

          Priority: medium
            Bug ID: 56680
          Assignee: xorg-driver-ati at lists.x.org
           Summary: [Bisected] xf86-video-ati git breaks X with no screens
                    found
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: serkan at hosca.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/Radeon
           Product: xorg

Latest -ati git breaks X. Bisected:

39eac3104c2f08b4d78aab3f88fd104301eb4711 is the first bad commit
commit 39eac3104c2f08b4d78aab3f88fd104301eb4711
Author: Ilija Hadzic <ihadzic at research.bell-labs.com>
Date:   Mon Sep 24 17:41:32 2012 -0400

    radeon/radeon_platform_probe: fix Zaphod mode breakage

    Using radeon_platform_probe function breaks the Zaphod mode because
    it attempts to call xf86AddEntityToScreen multiple times, but nobody
    calls xf86SetEntityShared prior to that. Consequently, calls for all
    but first device instance fail.

    Prior to introduction of platform bus, the logic was that the Probe
    function would make the entity sharable, which would cause Xserver
    to later make it shared prior to adding it to screen. With the
    platform bus loading, add to screen happens in the probe
    function so we have to make it shared there.

    Signed-off-by: Ilija Hadzic <ihadzic at research.bell-labs.com>

:040000 040000 42764e008e64efcf63a9324e859d73c292db20fd
36d1a97b0bc6add7eff8fab50757cf21eac1b1a2 M    src

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