[Bug 89055] [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sat Mar 12 00:00:36 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=89055
Matt Roper <matthew.d.roper at intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
i915 platform| |BXT
CC| |matthew.d.roper at intel.com
Assignee|gabriel.feceoru at intel.com |matthew.d.roper at intel.com
--- Comment #33 from Matt Roper <matthew.d.roper at intel.com> ---
I'm pretty sure this happens because we wind up re-computing the same watermark
values for each CRTC multiple times in a single atomic transaction (once per
CRTC involved in the transaction). I'm putting together some patches that make
SKL watermarks play more nicely with atomic (and eliminate this unnecessary
looping); I should have those ready to post next week sometime.
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