diff --git a/include/rtw_mp_ioctl.h b/include/rtw_mp_ioctl.h
index b6e1595..d693a68 100644
--- a/include/rtw_mp_ioctl.h
+++ b/include/rtw_mp_ioctl.h
@@ -29,52 +29,11 @@
 #include <rtw_efuse.h>
 #include <rtw_mp.h>
 
-/*  */
-typedef struct CFG_DBG_MSG_STRUCT {
-	u32 DebugLevel;
-	u32 DebugComponent_H32;
-	u32 DebugComponent_L32;
-}CFG_DBG_MSG_STRUCT,*PCFG_DBG_MSG_STRUCT;
-
-typedef struct _RW_REG {
+struct mp_rw_reg {
 	u32 offset;
 	u32 width;
 	u32 value;
-}mp_rw_reg,RW_Reg, *pRW_Reg;
-
-/* for OID_RT_PRO_READ16_EEPROM & OID_RT_PRO_WRITE16_EEPROM */
-typedef struct _EEPROM_RW_PARAM {
-	u32 offset;
-	u16 value;
-}eeprom_rw_param,EEPROM_RWParam, *pEEPROM_RWParam;
-
-typedef struct _EFUSE_ACCESS_STRUCT_ {
-	u16	start_addr;
-	u16	cnts;
-	u8	data[0];
-}EFUSE_ACCESS_STRUCT, *PEFUSE_ACCESS_STRUCT;
-
-typedef struct _BURST_RW_REG {
-	u32 offset;
-	u32 len;
-	u8 Data[256];
-}burst_rw_reg,Burst_RW_Reg, *pBurst_RW_Reg;
-
-typedef struct _USB_VendorReq{
-	u8	bRequest;
-	u16	wValue;
-	u16	wIndex;
-	u16	wLength;
-	u8	u8Dir;/* 0:OUT, 1:IN */
-	u8	u8InData;
-}usb_vendor_req, USB_VendorReq, *pUSB_VendorReq;
-
-typedef struct _DR_VARIABLE_STRUCT_ {
-	u8 offset;
-	u32 variable;
-}DR_VARIABLE_STRUCT;
-
-/* int mp_start_joinbss(struct adapter *padapter, NDIS_802_11_SSID *pssid); */
+};
 
 #define _irqlevel_changed_(a,b)
 
@@ -428,14 +387,6 @@ struct rfintfs_parm {
 	u32 rfintfs;
 };
 
-typedef struct _mp_xmit_parm_ {
-	u8 enable;
-	u32 count;
-	u16 length;
-	u8 payload_type;
-	u8 da[ETH_ALEN];
-}MP_XMIT_PARM, *PMP_XMIT_PARM;
-
 struct mp_xmit_packet {
 	u32 len;
 	u32 mem[MAX_MP_XMITBUF_SZ >> 2];
diff --git a/os_dep/ioctl_linux.c b/os_dep/ioctl_linux.c
index aa360f8..3a5f601 100644
--- a/os_dep/ioctl_linux.c
+++ b/os_dep/ioctl_linux.c
@@ -2909,7 +2909,7 @@ _rtw_drvext_hdl_exit:
 
 static void rtw_dbg_mode_hdl(struct adapter *padapter, u32 id, u8 *pdata, u32 len)
 {
-	pRW_Reg		RegRWStruct;
+	struct mp_rw_reg *		RegRWStruct;
 	struct rf_reg_param *prfreg;
 	u8 path;
 	u8 offset;
@@ -2923,7 +2923,7 @@ static void rtw_dbg_mode_hdl(struct adapter *padapter, u32 id, u8 *pdata, u32 le
 			DBG_871X("871x_driver is only for normal mode, can't enter mp mode\n");
 			break;
 		case GEN_MP_IOCTL_SUBCODE(READ_REG):
-			RegRWStruct = (pRW_Reg)pdata;
+			RegRWStruct = (struct mp_rw_reg *)pdata;
 			switch (RegRWStruct->width)
 			{
 				case 1:
@@ -2941,7 +2941,7 @@ static void rtw_dbg_mode_hdl(struct adapter *padapter, u32 id, u8 *pdata, u32 le
 
 			break;
 		case GEN_MP_IOCTL_SUBCODE(WRITE_REG):
-			RegRWStruct = (pRW_Reg)pdata;
+			RegRWStruct = (struct mp_rw_reg *)pdata;
 			switch (RegRWStruct->width)
 			{
 				case 1: