[Bug 78268] [HSW Regression]Many subtests of igt/kms_flip fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78268

--- Comment #5 from Guo Jinxian <jinxianx.guo at intel.com> ---
bisected on the bad hsw device.
33e8465e8759077106474cbf4f3d87612c41411d is the first bad commit

commit 33e8465e8759077106474cbf4f3d87612c41411d
Author:     Imre Deak <imre.deak at intel.com>
AuthorDate: Fri Apr 25 13:19:05 2014 +0300
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Wed Apr 30 10:06:25 2014 +0200

    drm/i915: vlv: init only needed state during early power well enabling

    During the initial power well enabling on the driver init/resume path
    we can avoid initialzing part of the HW/SW state that will be
    initialized anyway by the subsequent init/resume code. For some steps
    like HPD initialization this redundancy is not only an overhead but an
    actual problem, since they can't be run this early in the overall init
    sequence.

    Add a flag marking the init phase and skip reinitialzing state that is
    not strictly necessary based on that.

    This is also needed by the upcoming HPD init restructuring by Thierry
    and Daniel.

    Signed-off-by: Imre Deak <imre.deak at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

Revert this commit, the test result was passed.

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