[Intel-gfx] [PATCH] drm/i915: Wait for all fences before installing an exclusive clflush fence

[Chris Wilson]

Ensure that before we overwrite the reservation_object with our
exclusive fence for the pending clflush operation, that we do wait upon
all the fences in the current reservation_object.

Fixes: 57822dc6b9cf ("drm/i915: Perform object clflushing asynchronously")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Matthew Auld <matthew.auld at intel.com>
---
 drivers/gpu/drm/i915/i915_gem_clflush.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_clflush.c b/drivers/gpu/drm/i915/i915_gem_clflush.c
index d925fb582ba7..ffd01e02fe94 100644
--- a/drivers/gpu/drm/i915/i915_gem_clflush.c
+++ b/drivers/gpu/drm/i915/i915_gem_clflush.c
@@ -168,7 +168,7 @@ void i915_gem_clflush_object(struct drm_i915_gem_object *obj,
 
 		i915_sw_fence_await_reservation(&clflush->wait,
 						obj->resv, NULL,
-						false, I915_FENCE_TIMEOUT,
+						true, I915_FENCE_TIMEOUT,
 						GFP_KERNEL);
 
 		reservation_object_lock(obj->resv, NULL);
-- 
2.11.0