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Commit 2d29f757 authored by Imre Deak's avatar Imre Deak Committed by Greg Kroah-Hartman
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drm/i915: fix display power sw state reporting

commit b8c000d9 upstream.

Atm, we refcount both power domains and power wells and
intel_display_power_enabled_sw() returns the power domain refcount. What
the callers are really interested in though is the sw state of the
underlying power wells. Due to this we will report incorrectly that a
given power domain is off if its power wells were enabled via another
power domain, for example POWER_DOMAIN_INIT which enables all power
wells.

As a fix return instead the state based on the refcount of all power
wells included in the passed in power domain.

References: https://bugs.freedesktop.org/show_bug.cgi?id=79505
References: https://bugs.freedesktop.org/show_bug.cgi?id=79038


Reported-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Reviewed-by: default avatarDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: default avatarJani Nikula <jani.nikula@intel.com>
Signe...
parent 22d58715
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