drm/radeon: drop drivers copy of the rptr

In all cases where it really matters we are using the read functions anyway.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/r600_dma.c b/drivers/gpu/drm/radeon/r600_dma.c
index b2d4c91..6944e19 100644
--- a/drivers/gpu/drm/radeon/r600_dma.c
+++ b/drivers/gpu/drm/radeon/r600_dma.c
@@ -176,8 +176,6 @@
 	ring->wptr = 0;
 	WREG32(DMA_RB_WPTR, ring->wptr << 2);
 
-	ring->rptr = RREG32(DMA_RB_RPTR) >> 2;
-
 	WREG32(DMA_RB_CNTL, rb_cntl | DMA_RB_ENABLE);
 
 	ring->ready = true;
@@ -221,7 +219,7 @@
 	u32 reset_mask = r600_gpu_check_soft_reset(rdev);
 
 	if (!(reset_mask & RADEON_RESET_DMA)) {
-		radeon_ring_lockup_update(ring);
+		radeon_ring_lockup_update(rdev, ring);
 		return false;
 	}
 	/* force ring activities */