drm/i915/gt: perform uc late init after probe error injection
authorAndrzej Hajda <andrzej.hajda@intel.com>
Tue, 14 Mar 2023 15:19:20 +0000 (16:19 +0100)
committerAndrzej Hajda <andrzej.hajda@intel.com>
Fri, 17 Mar 2023 09:10:05 +0000 (10:10 +0100)
Probe pseudo errors should be injected only in places where real errors
can be encountered, otherwise unwinding code can be broken.
Placing intel_uc_init_late before i915_inject_probe_error violated
this rule, resulting in following bug:
__intel_gt_disable:655 GEM_BUG_ON(intel_gt_pm_is_awake(gt))

Fixes: 481d458caede ("drm/i915/guc: Add golden context to GuC ADS")
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230314151920.1065847-1-andrzej.hajda@intel.com
drivers/gpu/drm/i915/gt/intel_gt.c

index 89ccb95..7d6428a 100644 (file)
@@ -737,12 +737,12 @@ int intel_gt_init(struct intel_gt *gt)
        if (err)
                goto err_gt;
 
-       intel_uc_init_late(&gt->uc);
-
        err = i915_inject_probe_error(gt->i915, -EIO);
        if (err)
                goto err_gt;
 
+       intel_uc_init_late(&gt->uc);
+
        intel_migrate_init(&gt->migrate, gt);
 
        goto out_fw;