diff --git a/drivers/staging/rtl8192u/r819xU_phy.h b/drivers/staging/rtl8192u/r819xU_phy.h
index 445a5c0..74405a3 100644
--- a/drivers/staging/rtl8192u/r819xU_phy.h
+++ b/drivers/staging/rtl8192u/r819xU_phy.h
@@ -1,7 +1,7 @@
 #ifndef _R819XU_PHY_H
 #define _R819XU_PHY_H
 
-/* Channel switch:The size of command tables for switch channel*/
+/* Channel switch: The size of command tables for switch channel */
 #define MAX_PRECMD_CNT 16
 #define MAX_RFDEPENDCMD_CNT 16
 #define MAX_POSTCMD_CNT 16
@@ -16,7 +16,7 @@
 	CmdID_RF_WriteReg,
 } SwChnlCmdID;
 
-/*--------------------------------Define structure--------------------------------*/
+/* -----------------------Define structure---------------------- */
 /* 1. Switch channel related */
 typedef struct _SwChnlCmd {
 	SwChnlCmdID	CmdID;
@@ -38,15 +38,15 @@
 	HW90_BLOCK_PHY0 = 1,
 	HW90_BLOCK_PHY1 = 2,
 	HW90_BLOCK_RF = 3,
-	HW90_BLOCK_MAXIMUM = 4, // Never use this
+	HW90_BLOCK_MAXIMUM = 4, /* Never use this */
 } HW90_BLOCK_E, *PHW90_BLOCK_E;
 
 typedef enum _RF90_RADIO_PATH {
-	RF90_PATH_A = 0,			//Radio Path A
-	RF90_PATH_B = 1,			//Radio Path B
-	RF90_PATH_C = 2,			//Radio Path C
-	RF90_PATH_D = 3,			//Radio Path D
-	RF90_PATH_MAX				//Max RF number 92 support
+	RF90_PATH_A = 0,			/* Radio Path A */
+	RF90_PATH_B = 1,			/* Radio Path B */
+	RF90_PATH_C = 2,			/* Radio Path C */
+	RF90_PATH_D = 3,			/* Radio Path D */
+	RF90_PATH_MAX				/* Max RF number 92 support */
 } RF90_RADIO_PATH_E, *PRF90_RADIO_PATH_E;
 
 #define bMaskByte0                0xff
@@ -57,19 +57,14 @@
 #define bMaskLWord                0x0000ffff
 #define bMaskDWord                0xffffffff
 
-//extern u32 rtl8192_CalculateBitShift(u32 dwBitMask);
 extern u8 rtl8192_phy_CheckIsLegalRFPath(struct net_device *dev, u32 eRFPath);
 extern void rtl8192_setBBreg(struct net_device *dev, u32 dwRegAddr, u32 dwBitMask, u32 dwData);
 extern u32 rtl8192_QueryBBReg(struct net_device *dev, u32 dwRegAddr, u32 dwBitMask);
-//extern u32 rtl8192_phy_RFSerialRead(struct net_device* dev, RF90_RADIO_PATH_E eRFPath, u32 Offset);
-//extern void rtl8192_phy_RFSerialWrite(struct net_device* dev, RF90_RADIO_PATH_E eRFPath, u32 Offset, u32 Data);
 extern void rtl8192_phy_SetRFReg(struct net_device *dev, RF90_RADIO_PATH_E eRFPath, u32 RegAddr, u32 BitMask, u32 Data);
 extern u32 rtl8192_phy_QueryRFReg(struct net_device *dev, RF90_RADIO_PATH_E eRFPath, u32 RegAddr, u32 BitMask);
 extern void rtl8192_phy_configmac(struct net_device *dev);
 extern void rtl8192_phyConfigBB(struct net_device *dev, u8 ConfigType);
-//extern void rtl8192_InitBBRFRegDef(struct net_device* dev);
 extern u8 rtl8192_phy_checkBBAndRF(struct net_device *dev, HW90_BLOCK_E CheckBlock, RF90_RADIO_PATH_E eRFPath);
-//extern void rtl8192_BB_Config_ParaFile(struct net_device* dev);
 extern void rtl8192_BBConfig(struct net_device *dev);
 extern void rtl8192_phy_getTxPower(struct net_device *dev);
 extern void rtl8192_phy_setTxPower(struct net_device *dev, u8 channel);
@@ -82,7 +77,6 @@
 extern void rtl8192_SwChnl_WorkItem(struct net_device *dev);
 void rtl8192_SetBWModeWorkItem(struct net_device *dev);
 extern bool rtl8192_SetRFPowerState(struct net_device *dev, RT_RF_POWER_STATE eRFPowerState);
-//added by amy
 extern void InitialGain819xUsb(struct net_device *dev, u8 Operation);
 
 extern void InitialGainOperateWorkItemCallBack(struct work_struct *work);