dev/drm/radeon_cp.c

604 	u32 cur_read_ptr;
607 	cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
608 	RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
609 	SET_RING_HEAD(dev_priv, cur_read_ptr);
610 	dev_priv->ring.tail = cur_read_ptr;
697 	u32 ring_start, cur_read_ptr;
732 	cur_read_ptr = RADEON_READ(RADEON_CP_RB_RPTR);
733 	RADEON_WRITE(RADEON_CP_RB_WPTR, cur_read_ptr);
734 	SET_RING_HEAD(dev_priv, cur_read_ptr);
735 	dev_priv->ring.tail = cur_read_ptr;