drm/i915: Clean steer semaphore on resume

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During resume, the steer semaphore on GT1 was observed to be held. The
hardware team has confirmed the safety of clearing steer semaphores
for all GTs during driver load/resume, as no lock acquisitions can occur
in this process by other agents.

v2: reset on resume not in intel_gt_init().
v3: do the reset on intel_gt_resume_early()
v4: do general sanitization for all GTs(Matt)

Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230928130015.6758-3-nirmoy.das@intel.com

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Nirmoy Das 2023-09-28 15:00:14 +02:00

parent 35ba33f76c

commit 37280ef5c1

1 changed files with 10 additions and 0 deletions

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drivers/gpu/drm/i915/gt/intel_gt_pm.c

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