[Bug 54691] Error enabling power savings on Ironlake chip since 3.8.0

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=54691





--- Comment #1 from Ilya Tumaykin <itumaykin at gmail.com>  2013-03-03 04:07:57 ---
I've done bisecting between 3.7.10 and 3.8.0, here is the result:

3e9605018ab3e333d51cc90fccfde2031886763b is the first bad commit
commit 3e9605018ab3e333d51cc90fccfde2031886763b
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Nov 27 16:22:54 2012 +0000

    drm/i915: Rearrange code to only have a single method for waiting upon the
ring

    Replace the wait for the ring to be clear with the more common wait for
    the ring to be idle. The principle advantage is one less exported
    intel_ring_wait function, and the removal of a hardcoded value.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 aeb1a24182824a9da2090842ec3e521400037b0e
25ab310832eb71fc0d3ef9d41bfb1d949247a455 M      drivers

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