diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c
index 12d2fbe9c520a69741f587d24888b13773bcc74d..76da1687ab370594e0ba5b7fbbfdb6b8cc95ee29 100644
--- a/drivers/mmc/host/rtsx_usb_sdmmc.c
+++ b/drivers/mmc/host/rtsx_usb_sdmmc.c
@@ -909,7 +909,7 @@ static int sd_set_bus_width(struct rtsx_usb_sdmmc *host,
 		unsigned char bus_width)
 {
 	int err = 0;
-	u8 width[] = {
+	static const u8 width[] = {
 		[MMC_BUS_WIDTH_1] = SD_BUS_WIDTH_1BIT,
 		[MMC_BUS_WIDTH_4] = SD_BUS_WIDTH_4BIT,
 		[MMC_BUS_WIDTH_8] = SD_BUS_WIDTH_8BIT,