diff --git a/arch/arm/include/asm/arch-exynos/mmc.h b/arch/arm/include/asm/arch-exynos/mmc.h
index 98312d1c3ce2fdbfcd65e78ec637c32fc510fdf4..98d6530b15f035f30a40134e428f308c92548d5a 100644
--- a/arch/arm/include/asm/arch-exynos/mmc.h
+++ b/arch/arm/include/asm/arch-exynos/mmc.h
@@ -55,7 +55,7 @@
 
 int s5p_sdhci_init(u32 regbase, int index, int bus_width);
 
-static inline unsigned int s5p_mmc_init(int index, int bus_width)
+static inline int s5p_mmc_init(int index, int bus_width)
 {
 	unsigned int base = samsung_get_base_mmc() +
 				(S5P_MMC_DEV_OFFSET * index);
diff --git a/arch/arm/include/asm/arch-s5pc1xx/mmc.h b/arch/arm/include/asm/arch-s5pc1xx/mmc.h
index 55ff10b23ce48006ffb50d8ba7b465609d0b98fd..dd473c8ecd3d6c504b32f17013bc7334dd336a6c 100644
--- a/arch/arm/include/asm/arch-s5pc1xx/mmc.h
+++ b/arch/arm/include/asm/arch-s5pc1xx/mmc.h
@@ -55,7 +55,7 @@
 
 int s5p_sdhci_init(u32 regbase, int index, int bus_width);
 
-static inline unsigned int s5p_mmc_init(int index, int bus_width)
+static inline int s5p_mmc_init(int index, int bus_width)
 {
 	unsigned int base = samsung_get_base_mmc() +
 				 (S5P_MMC_DEV_OFFSET * index);