drm/i915/execlists: Add interrupt-pending check to intel_execlists_idle()
Primarily this serves as a sanity check that the bit has been cleared
before we suspend (and hasn't reappeared after resume).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170201131222.11882-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 7534584..44a92ea 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -508,9 +508,15 @@ bool intel_execlists_idle(struct drm_i915_private *dev_priv)
if (!i915.enable_execlists)
return true;
- for_each_engine(engine, dev_priv, id)
+ for_each_engine(engine, dev_priv, id) {
+ /* Interrupt/tasklet pending? */
+ if (test_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted))
+ return false;
+
+ /* Both ports drained, no more ELSP submission? */
if (!execlists_elsp_idle(engine))
return false;
+ }
return true;
}