diff --git a/drivers/staging/rtl8723au/core/rtw_io.c b/drivers/staging/rtl8723au/core/rtw_io.c
index 20680e0ce9e0..cf6d30f005b6 100644
--- a/drivers/staging/rtl8723au/core/rtw_io.c
+++ b/drivers/staging/rtl8723au/core/rtw_io.c
@@ -72,7 +72,10 @@ int _rtw_write823a(struct rtw_adapter *adapter, u32 addr, u8 val)
 
 	ret = io_ops->_write8(adapter, addr, val);
 
-	return RTW_STATUS_CODE23a(ret);
+	if (ret < 0)
+		return _FAIL;
+	else
+		return _SUCCESS;
 }
 
 int _rtw_write1623a(struct rtw_adapter *adapter, u32 addr, u16 val)
@@ -82,7 +85,10 @@ int _rtw_write1623a(struct rtw_adapter *adapter, u32 addr, u16 val)
 
 	ret = io_ops->_write16(adapter, addr, val);
 
-	return RTW_STATUS_CODE23a(ret);
+	if (ret < 0)
+		return _FAIL;
+	else
+		return _SUCCESS;
 }
 
 int _rtw_write3223a(struct rtw_adapter *adapter, u32 addr, u32 val)
@@ -92,7 +98,10 @@ int _rtw_write3223a(struct rtw_adapter *adapter, u32 addr, u32 val)
 
 	ret = io_ops->_write32(adapter, addr, val);
 
-	return RTW_STATUS_CODE23a(ret);
+	if (ret < 0)
+		return _FAIL;
+	else
+		return _SUCCESS;
 }
 
 int _rtw_writeN23a(struct rtw_adapter *adapter, u32 addr , u32 length , u8 *pdata)
@@ -102,7 +111,10 @@ int _rtw_writeN23a(struct rtw_adapter *adapter, u32 addr , u32 length , u8 *pdat
 
 	ret = io_ops->_writeN(adapter, addr, length, pdata);
 
-	return RTW_STATUS_CODE23a(ret);
+	if (ret < 0)
+		return _FAIL;
+	else
+		return _SUCCESS;
 }
 void _rtw_read_mem23a(struct rtw_adapter *adapter, u32 addr, u32 cnt, u8 *pmem)
 {
diff --git a/drivers/staging/rtl8723au/include/osdep_service.h b/drivers/staging/rtl8723au/include/osdep_service.h
index 6992797044a8..c4711a6c0af0 100644
--- a/drivers/staging/rtl8723au/include/osdep_service.h
+++ b/drivers/staging/rtl8723au/include/osdep_service.h
@@ -126,8 +126,6 @@ static inline u32 CHKBIT(u32 x)
 #define BIT35	0x0800000000
 #define BIT36	0x1000000000
 
-int RTW_STATUS_CODE23a(int error_code);
-
 extern unsigned char REALTEK_96B_IE23A[];
 extern unsigned char MCS_rate_2R23A[16];
 extern unsigned char WPA_TKIP_CIPHER23A[4];
diff --git a/drivers/staging/rtl8723au/os_dep/osdep_service.c b/drivers/staging/rtl8723au/os_dep/osdep_service.c
index 57c7bf8c314b..f5f385b7932f 100644
--- a/drivers/staging/rtl8723au/os_dep/osdep_service.c
+++ b/drivers/staging/rtl8723au/os_dep/osdep_service.c
@@ -20,17 +20,6 @@
 #include <drv_types.h>
 #include <recv_osdep.h>
 
-/*
-* Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE23a
-* @return: one of RTW_STATUS_CODE23a
-*/
-inline int RTW_STATUS_CODE23a(int error_code)
-{
-	if (error_code >= 0)
-		return _SUCCESS;
-	return _FAIL;
-}
-
 void _rtw_init_queue23a(struct rtw_queue *pqueue)
 {
 	INIT_LIST_HEAD(&pqueue->queue);