diff --git a/[refs] b/[refs]
index 6f0258344be9..2d6f1ae1c094 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7c88d2b80ba5c175398013842782461a3b980130
+refs/heads/master: e6ba759980e65084b0db9f1684d9d65a2a3e1741
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_device.c b/trunk/drivers/gpu/drm/radeon/radeon_device.c
index e680501c78ea..7cfaa7e2f3b5 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_device.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_device.c
@@ -215,6 +215,8 @@ int radeon_wb_init(struct radeon_device *rdev)
 		return r;
 	}
 
+	/* clear wb memory */
+	memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
 	/* disable event_write fences */
 	rdev->wb.use_event = false;
 	/* disabled via module param */