diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 93dcab548a83..de0792842af8 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -3093,7 +3093,7 @@ static void si_setup_rb(struct radeon_device *rdev,
 static void si_gpu_init(struct radeon_device *rdev)
 {
 	u32 gb_addr_config = 0;
-	u32 mc_shared_chmap, mc_arb_ramcfg;
+	u32 mc_arb_ramcfg;
 	u32 sx_debug_1;
 	u32 hdp_host_path_cntl;
 	u32 tmp;
@@ -3205,7 +3205,7 @@ static void si_gpu_init(struct radeon_device *rdev)
 
 	WREG32(BIF_FB_EN, FB_READ_EN | FB_WRITE_EN);
 
-	mc_shared_chmap = RREG32(MC_SHARED_CHMAP);
+	RREG32(MC_SHARED_CHMAP);
 	mc_arb_ramcfg = RREG32(MC_ARB_RAMCFG);
 
 	rdev->config.si.num_tile_pipes = rdev->config.si.max_tile_pipes;