Throw in a flush_work() and rcu_barrier() to specifically flush the
context cleanup work.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112248
Signed-off-by: Chris Wilson <[email protected]>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 1 +
 drivers/gpu/drm/i915/gt/intel_engine_cs.c   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c 
b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 72d389afa28a..17f395672e5e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -776,6 +776,7 @@ int i915_gem_init_contexts(struct drm_i915_private *i915)
 void i915_gem_driver_release__contexts(struct drm_i915_private *i915)
 {
        destroy_kernel_context(&i915->kernel_context);
+       flush_work(&i915->gem.contexts.free_work);
 }
 
 static int context_idr_cleanup(int id, void *p, void *data)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c 
b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index b9613d044393..1f68700a2311 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -402,6 +402,7 @@ void intel_engines_cleanup(struct intel_gt *gt)
                gt->engine[id] = NULL;
                gt->i915->engine[id] = NULL;
        }
+       rcu_barrier();
 }
 
 /**
-- 
2.24.0

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