1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 319e1ee1844a..cfc1d28ade39 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3166,7 +3166,7 @@ int r600_copy_cpdma(struct radeon_device *rdev,
 
         size_in_bytes = (num_gpu_pages << RADEON_GPU_PAGE_SHIFT);
         num_loops = DIV_ROUND_UP(size_in_bytes, 0x1fffff);
-        r = radeon_ring_lock(rdev, ring, num_loops * 6 + 21);
+        r = radeon_ring_lock(rdev, ring, num_loops * 6 + 24);
         if (r) {
                 DRM_ERROR("radeon: moving bo (%d).\n", r);
                 radeon_semaphore_free(rdev, &sem, NULL);
@@ -3181,6 +3181,9 @@ int r600_copy_cpdma(struct radeon_device *rdev,
                 radeon_semaphore_free(rdev, &sem, NULL);
         }
 
+        radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
+        radeon_ring_write(ring, (WAIT_UNTIL - PACKET3_SET_CONFIG_REG_OFFSET) >> 2);
+        radeon_ring_write(ring, WAIT_3D_IDLE_bit);
         for (i = 0; i < num_loops; i++) {
                 cur_size_in_bytes = size_in_bytes;
                 if (cur_size_in_bytes > 0x1fffff)