staging: r8188eu: remove HW_VAR_BCN_FUNC

The HW_VAR_BCN_FUNC case in SetHwReg8188EU() just calls
hw_var_set_bcn_func(). Remove HW_VAR_BCN_FUNC from SetHwReg8188EU(),
remove hw_var_set_bcn_func() and call rtw_write8() directly.

Since hw_var_set_bcn_func() was always called with value 0, we only
need to keep the else arm of the if statement that checks the value.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220130190321.7172-11-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -7626,8 +7626,8 @@ u8 disconnect_hdl(struct adapter *padapter, unsigned char *pbuf)
 
 	if (((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE) || ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE)) {
 		/* Stop BCN */
-		val8 = 0;
-		SetHwReg8188EU(padapter, HW_VAR_BCN_FUNC, (u8 *)(&val8));
+		val8 = rtw_read8(padapter, REG_BCN_CTRL);
+		rtw_write8(padapter, REG_BCN_CTRL, val8 & (~(EN_BCN_FUNCTION | EN_TXBCN_RPT)));
 	}
 
 	/* set MSR to no link state -> infra. mode */

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1049,18 +1049,6 @@ static void hw_var_set_bssid(struct adapter *Adapter, u8 *val)
 		rtw_write8(Adapter, (reg_bssid + idx), val[idx]);
 }
 
-static void hw_var_set_bcn_func(struct adapter *Adapter, u8 *val)
-{
-	u32 bcn_ctrl_reg;
-
-	bcn_ctrl_reg = REG_BCN_CTRL;
-
-	if (*((u8 *)val))
-		rtw_write8(Adapter, bcn_ctrl_reg, (EN_BCN_FUNCTION | EN_TXBCN_RPT));
-	else
-		rtw_write8(Adapter, bcn_ctrl_reg, rtw_read8(Adapter, bcn_ctrl_reg) & (~(EN_BCN_FUNCTION | EN_TXBCN_RPT)));
-}
-
 void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 {
 	struct hal_data_8188e *haldata = &Adapter->haldata;
@@ -1109,9 +1097,6 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 			rtw_write8(Adapter, REG_INIRTS_RATE_SEL, RateIndex);
 		}
 		break;
-	case HW_VAR_BCN_FUNC:
-		hw_var_set_bcn_func(Adapter, val);
-		break;
 	case HW_VAR_CORRECT_TSF:
 		{
 			u64	tsf;

drivers/staging/r8188eu/include/hal_intf.h

@@ -13,7 +13,6 @@ enum hw_variables {
 	HW_VAR_BSSID,
 	HW_VAR_INIT_RTS_RATE,
 	HW_VAR_BASIC_RATE,
-	HW_VAR_BCN_FUNC,
 	HW_VAR_CORRECT_TSF,
 	HW_VAR_CHECK_BSSID,
 	HW_VAR_MLME_DISCONNECT,