diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 8e112ccffb1374df266b479dca44fb946c690883..916b9f99b7e7265929467ad8cb26dc61139071b9 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -210,7 +210,7 @@ struct fsi_master {
  *		basic read write function
  */
 
-static void __fsi_reg_write(u32 reg, u32 data)
+static void __fsi_reg_write(u32 __iomem *reg, u32 data)
 {
 	/* valid data area is 24bit */
 	data &= 0x00ffffff;
@@ -218,12 +218,12 @@ static void __fsi_reg_write(u32 reg, u32 data)
 	__raw_writel(data, reg);
 }
 
-static u32 __fsi_reg_read(u32 reg)
+static u32 __fsi_reg_read(u32 __iomem *reg)
 {
 	return __raw_readl(reg);
 }
 
-static void __fsi_reg_mask_set(u32 reg, u32 mask, u32 data)
+static void __fsi_reg_mask_set(u32 __iomem *reg, u32 mask, u32 data)
 {
 	u32 val = __fsi_reg_read(reg);
 
@@ -250,7 +250,7 @@ static u32 _fsi_master_read(struct fsi_master *master, u32 reg)
 	unsigned long flags;
 
 	spin_lock_irqsave(&master->lock, flags);
-	ret = __fsi_reg_read((u32)(master->base + reg));
+	ret = __fsi_reg_read(master->base + reg);
 	spin_unlock_irqrestore(&master->lock, flags);
 
 	return ret;
@@ -264,7 +264,7 @@ static void _fsi_master_mask_set(struct fsi_master *master,
 	unsigned long flags;
 
 	spin_lock_irqsave(&master->lock, flags);
-	__fsi_reg_mask_set((u32)(master->base + reg), mask, data);
+	__fsi_reg_mask_set(master->base + reg, mask, data);
 	spin_unlock_irqrestore(&master->lock, flags);
 }