[Bug 91910] [SKL] WARN_ON(p->pixel_rate == 0) drivers/gpu/drm/i915/intel_pm.c:3325 skl_update_pipe_wm+0x791/0x7d0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91910

--- Comment #4 from Joseph Yasi <joe.yasi at gmail.com> ---
I can confirm that this patch does indeed fix it:
f9cd7b881a042dcc8f1b1236ecea6deb3eb4d5bd drm/i915: Move sprite/cursor plane
disable to intel_sanitize_crtc()

To get it to apply cleanly against 4.3-rc5, I
reverted
721a09f7393de6c28a07516dccd654c6e995944a drm/i915: Add primary plane to mask if
it's visible

Then applied:
7f4c62840cc416986f983a8c68f7010c97e06daf drm/i915: Assign hwmode after encoder
state readout

f9cd7b881a042dcc8f1b1236ecea6deb3eb4d5bd drm/i915: Move sprite/cursor plane
disable to
 intel_sanitize_crtc()

b26d3ea323b41a56db74f46131bc89e3c485f365 drm/i915: Add primary plane to mask if
it's visible (4.4 version)

Can we get a backport to 4.3?

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