drm/radeon: fix regression in dynpm due to multi-ring rework

Not all asics have all rings, so make sure the ring is ready
before attempting to check it in the dynpm work handler.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=43367

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 0882554..5b37e28 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -801,9 +801,13 @@ static void radeon_dynpm_idle_work_handler(struct work_struct *work)
                int i;
 
                for (i = 0; i < RADEON_NUM_RINGS; ++i) {
-                       not_processed += radeon_fence_count_emitted(rdev, i);
-                       if (not_processed >= 3)
-                               break;
+                       struct radeon_ring *ring = &rdev->ring[i];
+
+                       if (ring->ready) {
+                               not_processed += radeon_fence_count_emitted(rdev, i);
+                               if (not_processed >= 3)
+                                       break;
+                       }
                }
 
                if (not_processed >= 3) { /* should upclock */