staging: rtl8188eu: rtw_io.c: Remove unused function _rtw_write8_async()

Signed-off-by: navin patidar <navin.patidar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_io.c

@@ -138,18 +138,6 @@ int _rtw_writeN(struct adapter *adapter, u32 addr , u32 length , u8 *pdata)
 
 	return RTW_STATUS_CODE(ret);
 }
-int _rtw_write8_async(struct adapter *adapter, u32 addr, u8 val)
-{
-	struct io_priv *pio_priv = &adapter->iopriv;
-	struct	intf_hdl		*pintfhdl = &(pio_priv->intf);
-	int (*_write8_async)(struct intf_hdl *pintfhdl, u32 addr, u8 val);
-	int ret;
-	_write8_async = pintfhdl->io_ops._write8_async;
-
-	ret = _write8_async(pintfhdl, addr, val);
-
-	return RTW_STATUS_CODE(ret);
-}
 
 int _rtw_write16_async(struct adapter *adapter, u32 addr, u16 val)
 {

drivers/staging/rtl8188eu/include/rtw_io.h

@@ -52,7 +52,6 @@ struct _io_ops {
 	int (*_write32)(struct intf_hdl *pintfhdl, u32 addr, u32 val);
 	int (*_writeN)(struct intf_hdl *pintfhdl, u32 addr, u32 length,
 		       u8 *pdata);
-	int (*_write8_async)(struct intf_hdl *pintfhdl, u32 addr, u8 val);
 	int (*_write16_async)(struct intf_hdl *pintfhdl, u32 addr, u16 val);
 	int (*_write32_async)(struct intf_hdl *pintfhdl, u32 addr, u32 val);
 	u32 (*_read_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt,
@@ -103,7 +102,6 @@ int _rtw_write16(struct adapter *adapter, u32 addr, u16 val);
 int _rtw_write32(struct adapter *adapter, u32 addr, u32 val);
 int _rtw_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *pdata);
 
-int _rtw_write8_async(struct adapter *adapter, u32 addr, u8 val);
 int _rtw_write16_async(struct adapter *adapter, u32 addr, u16 val);
 int _rtw_write32_async(struct adapter *adapter, u32 addr, u32 val);
 
@@ -127,8 +125,6 @@ void _rtw_write_port_cancel(struct adapter *adapter);
 	_rtw_write32((adapter), (addr), (val))
 #define  rtw_writeN(adapter, addr, length, data)			\
 	_rtw_writeN((adapter), (addr), (length), (data))
-#define rtw_write8_async(adapter, addr, val)				\
-	_rtw_write8_async((adapter), (addr), (val))
 #define rtw_write16_async(adapter, addr, val)				\
 	_rtw_write16_async((adapter), (addr), (val))
 #define rtw_write32_async(adapter, addr, val)				\