[Intel-gfx] [PATCH v2 2/3] drm/i915: Remove redudant wait for each engine to idle from seqno wrap

[Chris Wilson]

Having added the wait upon each engine to idle into the central
i915_gem_wait_for_idle(), we can remove the now redundant wait from
reset_all_global_seqno(). This has the advantage of removing the late
detection of an error (an engine still busy) which left the seqno reset
only partially complete (though it should be safe enough!).

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_gem_request.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c
index dbfa9db2419d..79c30bbcfdcb 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -199,9 +199,6 @@ static int reset_all_global_seqno(struct drm_i915_private *i915, u32 seqno)
 	for_each_engine(engine, i915, id) {
 		struct intel_timeline *tl = &timeline->engine[id];
 
-		if (wait_for(intel_engine_is_idle(engine), 50))
-			return -EBUSY;
-
 		if (!i915_seqno_passed(seqno, tl->seqno)) {
 			/* spin until threads are complete */
 			while (intel_breadcrumbs_busy(engine))
-- 
2.11.0