drm/i915/opregion: rvda is relative from opregion base in opregion 2.1+

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Starting from opregion version 2.1 (roughly corresponding to ICL+) the
RVDA field is relative from the beginning of opregion, not absolute
address.

Fix the error path while at it.

v2: Make relative vs. absolute conditional on the opregion version,
    bumped for the purpose. Turned out there are machines relying on
    absolute RVDA in the wild.

v3: Fix the version checks

Fixes: 04ebaadb9f ("drm/i915/opregion: handle VBT sizes bigger than 6 KB")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190208184254.24123-2-jani.nikula@intel.com

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This commit is contained in:

Jani Nikula 2019-02-08 20:42:53 +02:00

parent 98fdaaca95

commit a0f52c3d35

1 changed files with 21 additions and 3 deletions

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drivers/gpu/drm/i915/intel_opregion.c

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