diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_ioctl.h b/drivers/staging/ft1000/ft1000-usb/ft1000_ioctl.h
index ad4bf8a886b4..5c5e79fcff82 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_ioctl.h
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_ioctl.h
@@ -94,12 +94,12 @@ typedef struct _IOCTL_DPRAM_COMMAND {
 #define IOCTL_CONNECT		10
 #define IOCTL_DISCONNECT	11
 
-#define IOCTL_FT1000_GET_DSP_STAT _IOR(FT1000_MAGIC_CODE, IOCTL_GET_DSP_STAT_CMD, sizeof(IOCTL_GET_DSP_STAT)
-#define IOCTL_FT1000_GET_VER _IOR(FT1000_MAGIC_CODE, IOCTL_GET_VER_CMD, sizeof(IOCTL_GET_VER)
-#define IOCTL_FT1000_CONNECT _IOW(FT1000_MAGIC_CODE, IOCTL_CONNECT, 0
-#define IOCTL_FT1000_DISCONNECT _IOW(FT1000_MAGIC_CODE, IOCTL_DISCONNECT, 0
-#define IOCTL_FT1000_SET_DPRAM _IOW(FT1000_MAGIC_CODE, IOCTL_SET_DPRAM_CMD, sizeof(IOCTL_DPRAM_BLK)
-#define IOCTL_FT1000_GET_DPRAM _IOR(FT1000_MAGIC_CODE, IOCTL_GET_DPRAM_CMD, sizeof(IOCTL_DPRAM_BLK)
-#define IOCTL_FT1000_REGISTER  _IOW(FT1000_MAGIC_CODE, IOCTL_REGISTER_CMD, sizeof(unsigned short *)
-#endif /* _FT1000IOCTLH_ */
+#define IOCTL_FT1000_GET_DSP_STAT _IOR(FT1000_MAGIC_CODE, IOCTL_GET_DSP_STAT_CMD, IOCTL_GET_DSP_STAT)
+#define IOCTL_FT1000_GET_VER _IOR(FT1000_MAGIC_CODE, IOCTL_GET_VER_CMD, IOCTL_GET_VER)
+#define IOCTL_FT1000_CONNECT _IO(FT1000_MAGIC_CODE, IOCTL_CONNECT)
+#define IOCTL_FT1000_DISCONNECT _IO(FT1000_MAGIC_CODE, IOCTL_DISCONNECT)
+#define IOCTL_FT1000_SET_DPRAM _IOW(FT1000_MAGIC_CODE, IOCTL_SET_DPRAM_CMD, IOCTL_DPRAM_BLK)
+#define IOCTL_FT1000_GET_DPRAM _IOR(FT1000_MAGIC_CODE, IOCTL_GET_DPRAM_CMD, IOCTL_DPRAM_BLK)
+#define IOCTL_FT1000_REGISTER  _IOW(FT1000_MAGIC_CODE, IOCTL_REGISTER_CMD, unsigned short *)
 
+#endif /* _FT1000IOCTLH_ */