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drm/i915: restore QUIRK_NO_PCH_PWM_ENABLE

Jani Nikula intel-gfx 1 version In review

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  1. v1 Latest1 patch 5 repliesIn review

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#Subject and filesSizeRepliesApplied
1/1drm/i915: restore QUIRK_NO_PCH_PWM_ENABLEdrivers/gpu/drm/i915/i915_drv.h drivers/gpu/drm/i915/intel_display.c drivers/gpu/drm/i915/intel_panel.c+21 -05 replies

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PatchRomain FrancoiseKamal Mostafa
1/1T-b T-b

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Cover letter [PATCH for stable 3.14 only 0/1] drm/i915: restore QUIRK_NO_PCH_PWM_ENABLE

Stable team -

I'd like to hear your opinions on this one. It reverts a commit that regressed in 3.14, but the revert does not exist upstream. Instead we've root caused the issue and provided a real fix for upstream, but we're hesitant to backport that to stable. Functionally the effect of the revert is similar to the real fix, but only impacts a few models, while the real fix has much broader scope. See the commit message for details.

Romain, Kamal, I'd appreciate it if you could provide your tested-by with this on top of 3.14.2 on the failing Dell XPS models. Thanks.

BR,
Jani.

Jani Nikula (1):
drm/i915: restore QUIRK_NO_PCH_PWM_ENABLE

 drivers/gpu/drm/i915/i915_drv.h      |  1 +
 drivers/gpu/drm/i915/intel_display.c | 16 ++++++++++++++++
 drivers/gpu/drm/i915/intel_panel.c   |  4 ++++
 3 files changed, 21 insertions(+)
Signature · 1 line
1.9.1

Read the cover letter in its thread