[Bug 85431] intel_display.c:902 g4x_wait_for_vblank+0xd5/0xf0 [i915]() vblank wait timed out

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=85431

--- Comment #4 from Alan Bartlett <ajb at elrepo.org> ---
Retracing my steps I can now see that I miscounted (due to lack of sleep).

The log --

[Build64R6 linux]$ git bisect log
git bisect start
# bad: [fe82dcec644244676d55a1384c958d5f67979adb] Linux 3.17-rc7
git bisect bad fe82dcec644244676d55a1384c958d5f67979adb
# good: [1860e379875dfe7271c649058aeddffe5afd9d0d] Linux 3.15
git bisect good 1860e379875dfe7271c649058aeddffe5afd9d0d
# bad: [fa24615f4ce27fc41f11348459b2e26655c7255a] Merge tag
'char-misc-3.16-rc6' of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect bad fa24615f4ce27fc41f11348459b2e26655c7255a
# good: [dcbff5d1effbbd52be1ed9f2efb6c8d0445ad188] idr: reorder the fields
git bisect good dcbff5d1effbbd52be1ed9f2efb6c8d0445ad188
# bad: [0430e49b6e7c6b5e076be8fefdee089958c9adad] ima: introduce
ima_kernel_read()
git bisect bad 0430e49b6e7c6b5e076be8fefdee089958c9adad
# good: [9ee4d7a6538308a7681b638d2f35f2a301420355] Merge branch 'akpm' (patches
from Andrew Morton)
git bisect good 9ee4d7a6538308a7681b638d2f35f2a301420355
# bad: [bc1dfff04a5d4064ba0db1fab13f84ab4f333d2b] Merge branch
'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into
drm-next
git bisect bad bc1dfff04a5d4064ba0db1fab13f84ab4f333d2b
# bad: [4fa62c890cea83f28c30e1d5dc8fc86f61210280] drm/i915: Move buffer pinning
and ring selection to intel_crtc_page_flip()
git bisect bad 4fa62c890cea83f28c30e1d5dc8fc86f61210280
# bad: [aeab0b5af7df88284d101abf8d121f0e913b81ff] drm/i915: disable runtime PM
if RC6 is disabled
git bisect bad aeab0b5af7df88284d101abf8d121f0e913b81ff
# bad: [13732ba7493fd4b28568f768ee12497e26a0c8af] drm/i915: move infoframe
setting to after pll enable v3
git bisect bad 13732ba7493fd4b28568f768ee12497e26a0c8af
# good: [7c4d664e03c9b12572356a6ce8e69c7d59e6f4f7] drm/i915: fix open coded
gen5_gt_irq_preinstall
git bisect good 7c4d664e03c9b12572356a6ce8e69c7d59e6f4f7
# good: [9926ada1280767a039c4bc0f84549eb8f273c5de] drm/i915: only check for
irqs_disabled when disabling LCPLL
git bisect good 9926ada1280767a039c4bc0f84549eb8f273c5de
# good: [4e04632e882719e46edcbbc0b76fad778a0ed845] drm/i915/vlv:Implement the
WA 'WaDisable_RenderCache_OperationalFlush'
git bisect good 4e04632e882719e46edcbbc0b76fad778a0ed845
# bad: [2a44b76bb5a1f520371432825c91fa46c63bde84] drm/i915: Add some more
tracked state to intel_pipe_wm
git bisect bad 2a44b76bb5a1f520371432825c91fa46c63bde84
# good: [935f38d6948eb0bf10ac691d010fec9e9163a9c6] drm/i915: Unref context on
failed eb_create
git bisect good 935f38d6948eb0bf10ac691d010fec9e9163a9c6
# bad: [17d36749a559905f7d9a640239a9fc74fc3bb445] drm/i915: Dump the whole
context object.
git bisect bad 17d36749a559905f7d9a640239a9fc74fc3bb445
# bad: [9393707190194eb8b42e412b444a03331db6862f] drm/i915: warn when a vblank
wait times out
git bisect bad 9393707190194eb8b42e412b444a03331db6862f
[Build64R6 linux]$

The bad commit --

[Build64R6 linux]$ git bisect bad
9393707190194eb8b42e412b444a03331db6862f is the first bad commit
commit 9393707190194eb8b42e412b444a03331db6862f
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Fri Apr 4 16:12:09 2014 -0700

    drm/i915: warn when a vblank wait times out

    This always indicates a bug somewhere.

    Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 ea35b90af96d508197e845a7793f782067e7736b
ac515983fd901a9b3d83c279618ab4365724dd95 M    drivers
[Build64R6 linux]$

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