diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c
index 64cda84b23029a5d40bcee5754576080ee406ae0..73fd75c3c824904d7171a51f16943192f6c1bc03 100644
--- a/drivers/mmc/host/dw_mmc-k3.c
+++ b/drivers/mmc/host/dw_mmc-k3.c
@@ -75,7 +75,7 @@ struct hs_timing {
 	u32 smpl_phase_min;
 };
 
-struct hs_timing hs_timing_cfg[TIMING_MODE][TIMING_CFG_NUM] = {
+static struct hs_timing hs_timing_cfg[TIMING_MODE][TIMING_CFG_NUM] = {
 	{ /* reserved */ },
 	{ /* SD */
 		{7, 0, 15, 15,},  /* 0: LEGACY 400k */