diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index a0ac89d..3cf69e5 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -644,7 +644,7 @@
 {
 	int err, clk;
 	u8 n, clk_divider, mcu_cnt, div;
-	u8 depth[] = {
+	static const u8 depth[] = {
 		[RTSX_SSC_DEPTH_4M] = SSC_DEPTH_4M,
 		[RTSX_SSC_DEPTH_2M] = SSC_DEPTH_2M,
 		[RTSX_SSC_DEPTH_1M] = SSC_DEPTH_1M,
@@ -768,7 +768,7 @@
 
 int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card)
 {
-	unsigned int cd_mask[] = {
+	static const unsigned int cd_mask[] = {
 		[RTSX_SD_CARD] = SD_EXIST,
 		[RTSX_MS_CARD] = MS_EXIST
 	};