In the next^W forthcoming patch, we will start to defer retiring the
request from the engine list if it is still active on the submission
backend. To preserve the semantics that after wait-for-idle completes
the system is idle and fully retired, we need to therefore wait for the
backends to idle before calling i915_retire_requests().
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 858d188dd33b..5a9cae604e2b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3810,10 +3810,13 @@ int i915_gem_wait_for_idle(struct drm_i915_private *i915, unsigned int flags)
if (err)
return err;
}
+
+ err = wait_for_engines(i915);
+ if (err)
+ return err;
+
i915_retire_requests(i915);
GEM_BUG_ON(i915->gt.active_requests);
-
- return wait_for_engines(i915);
} else {
struct intel_engine_cs *engine;
enum intel_engine_id id;
@@ -3824,9 +3827,9 @@ int i915_gem_wait_for_idle(struct drm_i915_private *i915, unsigned int flags)
if (err)
return err;
}
-
- return 0;
}
+
+ return 0;
}
static void __i915_gem_object_flush_for_display(struct drm_i915_gem_object *obj)
--
2.18.0
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