diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 5d449089e3ad..99890d1bbfcb 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -156,7 +156,7 @@ static u8 tusb_readb(void __iomem *addr, u32 offset)
 	return val;
 }
 
-static void tusb_writeb(void __iomem *addr, unsigned offset, u8 data)
+static void tusb_writeb(void __iomem *addr, u32 offset, u8 data)
 {
 	u16 tmp;