[Bug 83516] [HSW] *ERROR* too many voltage retries, give up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83516

--- Comment #7 from Chris Cheney <chris.cheney at gmail.com> ---
Got it.

--

c79057922ed6c2c6df1214e6ab4414fea1b23db2 is the first bad commit
commit c79057922ed6c2c6df1214e6ab4414fea1b23db2
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Wed Apr 16 16:56:09 2014 +0200

    drm/i915: Remove vblank wait from haswell_write_eld

    The pipe is off at that point in time, so a vblank wait is simply a
    50ms wait. Caught by Jesse's verbose "make vblank wait timeouts WARN"
    patch. We've probably had a few versions of this float around already.

    To document assumptions put a pipe assert into the same place. And
    also add a posting read.

    If we ever decide to update the eld and infoframes while the pipe is
    already on (e.g. for fastboot) then there's lots of work to do. So
    better properly document all the hidden assumptions.

    Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 a65e012daaeba6dc023720fec6058feb97105626
49ac5b7847710371efb3efd7c17a3847a500359c M    drivers


---

# git bisect log
git bisect start
# bad: [a1a6cc1d2ea9e3adf81faab87b834bc903856207] ata: pata_samsung_cf: removes
s5pc100 related ata codes
git bisect bad a1a6cc1d2ea9e3adf81faab87b834bc903856207
# good: [52c324f8a87b336496d0f5e9d8dff1aa32bb08cd] cpuidle: Combine
cpuidle_enabled() with cpuidle_select()
git bisect good 52c324f8a87b336496d0f5e9d8dff1aa32bb08cd
# good: [b77279bc2e81545b20824da701b349272a78e4e7] Merge tag 'sound-3.16-rc1'
of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound into next
git bisect good b77279bc2e81545b20824da701b349272a78e4e7
# good: [859862ddd2b6b8dee00498c015ab37f02474b442] Merge branch 'for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
git bisect good 859862ddd2b6b8dee00498c015ab37f02474b442
# good: [4da005cf1e30897520106114a8ce11a5aa558497] qlcnic: Pre-allocate DMA
buffer used for minidump collection
git bisect good 4da005cf1e30897520106114a8ce11a5aa558497
# 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
# good: [13732ba7493fd4b28568f768ee12497e26a0c8af] drm/i915: move infoframe
setting to after pll enable v3
git bisect good 13732ba7493fd4b28568f768ee12497e26a0c8af
# bad: [7e9ab4081e646fc317d0a87929a352f0e5082190] Merge branch
'drm-coverity-fixes' of git://people.freedesktop.org/~danvet/drm into drm-next
git bisect bad 7e9ab4081e646fc317d0a87929a352f0e5082190
# good: [23d0b13036d14257ae4d226209cd7845f25af8e0] drm/i915/bdw: Add 42ms delay
for IPS disable
git bisect good 23d0b13036d14257ae4d226209cd7845f25af8e0
# good: [8268bd48af9aae5e079d3ba8403ae459ff06cbcb] drm/i2c/tda998x: Fix signed
overflow issue
git bisect good 8268bd48af9aae5e079d3ba8403ae459ff06cbcb
# good: [a5c4d7bc187bd13bc11ac06bb4ea3a0d4001aa4d] drm/i915: Disable/enable
planes as the first/last thing during modeset on ILK+
git bisect good a5c4d7bc187bd13bc11ac06bb4ea3a0d4001aa4d
# bad: [b87577b7c768683736eea28f70779e8c75b4df62] drm: try harder to avoid
regression when merging mode bits
git bisect bad b87577b7c768683736eea28f70779e8c75b4df62
# bad: [885ac04ab3a226d28147853d6d98eee3897a5636] Merge tag
'drm-intel-next-2014-04-16' of git://anongit.freedesktop.org/drm-intel into
drm-next
git bisect bad 885ac04ab3a226d28147853d6d98eee3897a5636
# bad: [c79057922ed6c2c6df1214e6ab4414fea1b23db2] drm/i915: Remove vblank wait
from haswell_write_eld
git bisect bad c79057922ed6c2c6df1214e6ab4414fea1b23db2
# first bad commit: [c79057922ed6c2c6df1214e6ab4414fea1b23db2] drm/i915: Remove
vblank wait from haswell_write_eld

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