drm/i915/guc/slpc: Check GuC status before freq boost

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It's possible that i915 might get wedged between a boost
and un-boost. Validate the i915-GuC connection before trying
to send a H2G to change the min frequency.

Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/4464

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211112071016.9640-1-vinay.belgaumkar@intel.com

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Vinay Belgaumkar 2021-11-11 23:10:16 -08:00 • committed by John Harrison

parent 212e6562f3

commit 5f1176b419

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drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c

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