[PATCH] drm/i915: Suppress assertion for i915_ggtt_disable_guc

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Another step in the drv_module_reload fault-injection saga, is that we
try to disable the guc twice. Probably. It's a little unclear exactly
what is going on in the unload sequence that catches us out, so for the
time being suppress the assertion to get the test re-enabled.

Testcase: igt/drv_module_reload/basic-reload-inject
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Michał Winiarski <michal.winiarski@xxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_gem_gtt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index cff0e6430994..1b476423bfab 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3654,6 +3654,10 @@ void i915_ggtt_enable_guc(struct drm_i915_private *i915)
 
 void i915_ggtt_disable_guc(struct drm_i915_private *i915)
 {
+	/* XXX Temporary pardon for error unload */
+	if (i915->ggtt.invalidate == gen6_ggtt_invalidate)
+		return;
+
 	/* We should only be called after i915_ggtt_enable_guc() */
 	GEM_BUG_ON(i915->ggtt.invalidate != guc_ggtt_invalidate);
 
-- 
2.18.0

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