[PATCH 3/3] drm/radeon: cleanup false positive lockup handling

[Christian König]

From: Christian König <christian.koenig at amd.com>

Check always when we calculate the free dw, not just the first time.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/radeon/radeon_ring.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index bf8b9ad..8bc5298 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -349,7 +349,10 @@ void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *ring)
 	ring->ring_free_dw -= ring->wptr;
 	ring->ring_free_dw &= ring->ptr_mask;
 	if (!ring->ring_free_dw) {
+		/* this is an empty ring */
 		ring->ring_free_dw = ring->ring_size / 4;
+		/*  update lockup info to avoid false positive */
+		radeon_ring_lockup_update(rdev, ring);
 	}
 }
 
@@ -373,12 +376,6 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi
 	/* Align requested size with padding so unlock_commit can
 	 * pad safely */
 	radeon_ring_free_size(rdev, ring);
-	if (ring->ring_free_dw == (ring->ring_size / 4)) {
-		/* This is an empty ring update lockup info to avoid
-		 * false positive.
-		 */
-		radeon_ring_lockup_update(rdev, ring);
-	}
 	ndw = (ndw + ring->align_mask) & ~ring->align_mask;
 	while (ndw > (ring->ring_free_dw - 1)) {
 		radeon_ring_free_size(rdev, ring);
-- 
1.8.3.2