[Intel-gfx] [PATCH 1/2] drm/i915: Flush the residual parking on emergency shutdown

[Chris Wilson]

On unwinding following a critical failure inside GEM init, we also need
to be sure to flush the workers before unloading the module.

Testcase: igt/drv_module_reload/basic-reload-inject
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem.c      | 2 ++
 drivers/gpu/drm/i915/intel_display.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b35cbfd16c9c..737580907c0c 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5548,6 +5548,8 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
 	WARN_ON(i915_gem_suspend(dev_priv));
 	i915_gem_suspend_late(dev_priv);
 
+	i915_gem_drain_workqueue(dev_priv);
+
 	mutex_lock(&dev_priv->drm.struct_mutex);
 	intel_uc_fini_hw(dev_priv);
 err_uc_init:
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8f3199b06d1f..7998e70a3174 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15890,6 +15890,8 @@ void intel_modeset_cleanup(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
+	flush_workqueue(dev_priv->modeset_wq);
+
 	flush_work(&dev_priv->atomic_helper.free_work);
 	WARN_ON(!llist_empty(&dev_priv->atomic_helper.free_list));
 
-- 
2.18.0