drm/i915: Leave engine parking to the engines

Drop the check in GEM parking that the engines were already parked. The
intention here was that before we dropped the GT wakeref, we were sure
that no more interrupts could be raised -- however, we have already
dropped the wakeref by this point and the warning is no longer valid.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190502150024.16636-2-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_gem_pm.c b/drivers/gpu/drm/i915/i915_gem_pm.c
index 3b6e8d5..49b0ce5 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_pm.c
+++ b/drivers/gpu/drm/i915/i915_gem_pm.c
@@ -17,24 +17,8 @@ static void i915_gem_park(struct drm_i915_private *i915)
 
        lockdep_assert_held(&i915->drm.struct_mutex);
 
-       for_each_engine(engine, i915, id) {
-               /*
-                * We are committed now to parking the engines, make sure there
-                * will be no more interrupts arriving later and the engines
-                * are truly idle.
-                */
-               if (wait_for(intel_engine_is_idle(engine), 10)) {
-                       struct drm_printer p = drm_debug_printer(__func__);
-
-                       dev_err(i915->drm.dev,
-                               "%s is not idle before parking\n",
-                               engine->name);
-                       intel_engine_dump(engine, &p, NULL);
-               }
-               tasklet_kill(&engine->execlists.tasklet);
-
+       for_each_engine(engine, i915, id)
                i915_gem_batch_pool_fini(&engine->batch_pool);
-       }
 
        i915_timelines_park(i915);
        i915_vma_parked(i915);