diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
index 63e1f90..75fa014 100644
--- a/drivers/mmc/mv_sdhci.c
+++ b/drivers/mmc/mv_sdhci.c
@@ -12,7 +12,7 @@ static struct sdhci_ops mv_ops;
 static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
 {
 	struct mmc *mmc = host->mmc;
-	u32 ata = (u32)host->ioaddr + SD_CE_ATA_2;
+	u32 ata = (unsigned long)host->ioaddr + SD_CE_ATA_2;
 
 	if (!IS_SD(mmc) && reg == SDHCI_HOST_CONTROL) {
 		if (mmc->bus_width == 8)
@@ -30,7 +30,7 @@ static inline void mv_sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
 #endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
 
 static char *MVSDH_NAME = "mv_sdh";
-int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
+int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks)
 {
 	struct sdhci_host *host = NULL;
 	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));