staging: rtl8723bs: remove _rtw_sd_f0_read8()

Both the _rtw_sd_f0_read8() function and the rtw_sd_f0_read8()
redefinition are used anywhere in the driver and can be removed.

Signed-off-by: Bryan Brattlof <[e-mail]>
Link: https://lore.kernel.org/r/5f02[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8723bs/core/rtw_io.c

···
 	return RTW_STATUS_CODE(ret);
 }
 
-u8 _rtw_sd_f0_read8(struct adapter *adapter, u32 addr)
-{
-	u8 r_val = 0x00;
-	struct io_priv *pio_priv = &adapter->iopriv;
-	struct intf_hdl *pintfhdl = &(pio_priv->intf);
-	u8 (*_sd_f0_read8)(struct intf_hdl *pintfhdl, u32 addr);
-
-	_sd_f0_read8 = pintfhdl->io_ops._sd_f0_read8;
-
-	if (_sd_f0_read8)
-		r_val = _sd_f0_read8(pintfhdl, addr);
-	else
-		netdev_warn(adapter->pnetdev,
-			    FUNC_ADPT_FMT " _sd_f0_read8 callback is NULL\n",
-			    FUNC_ADPT_ARG(adapter));
-
-	return r_val;
-}
-
 u32 rtw_write_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem)
 {
 	u32 (*_write_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *pmem);

drivers/staging/rtl8723bs/include/rtw_io.h

···
 extern int rtw_write16(struct adapter *adapter, u32 addr, u16 val);
 extern int rtw_write32(struct adapter *adapter, u32 addr, u32 val);
 
-extern u8 _rtw_sd_f0_read8(struct adapter *adapter, u32 addr);
-
 extern u32 rtw_write_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
-
-#define rtw_sd_f0_read8(adapter, addr) _rtw_sd_f0_read8((adapter), (addr))
 
 extern void rtw_write_scsi(struct adapter *adapter, u32 cnt, u8 *pmem);