net: wireless: rockchip_wlan: realtek wifi: avoid illegal argument when called by ioctl SIOCDEVPRIVATE write

Illegal argument will cause following kernel panic.

Call trace:
  phy_RFSerialRead_8723B
  PHY_QueryRFReg_8723B
  rtw_hal_read_rfreg
  rtw_wx_read_rf
  _rtw_ioctl_wext_private
  rtw_ioctl
  dev_ifsioc
  dev_ioctl

References: CNVD-C-2020-259506

Signed-off-by: Weiguo Hu <hwg@rock-chips.com>
Change-Id: I27e7a453a0156371fb96c764df99e8a77dce87fa

Author: Weiguo Hu

drivers/net/wireless/rockchip_wlan/rtl8188eu/hal/rtl8188e/rtl8188e_phycfg.c

@@ -642,6 +642,9 @@ PHY_QueryRFReg8188E(
 	/* u8	RFWaitCounter = 0; */
 	/* _irqL	irqL; */
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8188fu/hal/rtl8188f/rtl8188f_phycfg.c

@@ -392,6 +392,9 @@ PHY_QueryRFReg_8188F(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8189es/hal/rtl8188e/rtl8188e_phycfg.c

@@ -653,6 +653,9 @@ PHY_QueryRFReg8188E(
 	//u8	RFWaitCounter = 0;
 	//_irqL	irqL;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8189fs/hal/rtl8188f/rtl8188f_phycfg.c

@@ -330,6 +330,9 @@ PHY_QueryRFReg_8188F(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8723bs/hal/rtl8723b/rtl8723b_phycfg.c

@@ -386,6 +386,9 @@ PHY_QueryRFReg_8723B(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8723bu/hal/rtl8723b/rtl8723b_phycfg.c

@@ -398,6 +398,10 @@ PHY_QueryRFReg_8723B(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8723cs/hal/rtl8703b/rtl8703b_phycfg.c

@@ -391,6 +391,9 @@ PHY_QueryRFReg_8703B(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif

drivers/net/wireless/rockchip_wlan/rtl8723ds/hal/rtl8723d/rtl8723d_phycfg.c

@@ -331,6 +331,9 @@ PHY_QueryRFReg_8723D(
 {
 	u32 Original_Value, Readback_Value, BitShift;
 
+        if (eRFPath >= MAX_RF_PATH)
+                return 0;
+
 #if (DISABLE_BB_RF == 1)
 	return 0;
 #endif