From: Ville Syrjälä Date: Thu, 28 May 2015 15:32:36 +0000 (+0300) Subject: drm/i915: Don't skip request retirement if the active list is empty X-Git-Tag: v4.2-rc1~33^2~12 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=11ee9615f9bbc9c0c2dbd9f5eb275459b76f032a;p=karo-tx-linux.git drm/i915: Don't skip request retirement if the active list is empty Apparently we can have requests even if though the active list is empty, so do the request retirement regardless of whether there's anything on the active list. The way it happened here is that during suspend intel_ring_idle() notices the olr hanging around and then proceeds to get rid of it by adding a request. However since there was nothing on the active lists i915_gem_retire_requests() didn't clean those up, and so the idle work never runs, and we leave the GPU "busy" during suspend resulting in a WARN later. Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson Signed-off-by: Jani Nikula --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index be35f0486202..c35e0352b77f 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2813,9 +2813,6 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *ring) { WARN_ON(i915_verify_lists(ring->dev)); - if (list_empty(&ring->active_list)) - return; - /* Retire requests first as we use it above for the early return. * If we retire requests last, we may use a later seqno and so clear * the requests lists without clearing the active list, leading to