drm/radeon/kms: call r100_cp_disable rather than duplicating code.

r100_cp_fini was duplicating code of r100_cp_disable, call r100_cp_disable
instead.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r100.c

@@ -734,8 +734,7 @@ void r100_cp_fini(struct radeon_device *rdev)
 		DRM_ERROR("Wait for CP idle timeout, shutting down CP.\n");
 	}
 	/* Disable ring */
-	rdev->cp.ready = false;
-	WREG32(RADEON_CP_CSQ_CNTL, 0);
+	r100_cp_disable(rdev);
 	radeon_ring_fini(rdev);
 	DRM_INFO("radeon: cp finalized\n");
 }

drivers/gpu/drm/radeon/radeon.h

@@ -933,4 +933,7 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
 #define radeon_clear_surface_reg(rdev, r) ((rdev)->asic->clear_surface_reg((rdev), (r)))
 #define radeon_bandwidth_update(rdev) (rdev)->asic->bandwidth_update((rdev))
 
+/* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280 */
+void r100_cp_disable(struct radeon_device *rdev);
+
 #endif