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drm/i915: Restore the kernel context after verifying the w/a

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As a safety net, flush the engine verifications and restore the kernel
context.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/971
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200126194618.2131078-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-01-26 19:46:18 +00:00
parent 909438bbfb
commit 9c6527116e
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/gt/intel_gt.c
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@ -538,6 +538,10 @@ static int __engines_verify_workarounds(struct intel_gt *gt)
err = -EIO;
}
/* Flush and restore the kernel context for safety */
if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME)
err = -EIO;
return err;
}