staging: r8188eu: remove HW_VAR_MLME_DISCONNECT from SetHwReg8188EU()

SetHwReg8188EU() is called with HW_VAR_MLME_DISCONNECT only from
functions in rtw_mlme_ext.c. Move the functionality into a static
function in rtw_mlme_ext.c and remove the HW_VAR_MLME_DISCONNECT case
from SetHwReg8188EU(). This is part of the ongoing effort to get rid
of the unwanted hal layer.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220329202141.7028-3-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -6796,13 +6796,26 @@ void mlmeext_sta_add_event_callback(struct adapter *padapter, struct sta_info *p
 	update_sta_info(padapter, psta);
 }
 
+static void mlme_disconnect(struct adapter *adapter)
+{
+	/* Set RCR to not to receive data frame when NO LINK state */
+	/* reject all data frames */
+	rtw_write16(adapter, REG_RXFLTMAP2, 0x00);
+
+	/* reset TSF */
+	rtw_write8(adapter, REG_DUAL_TSF_RST, (BIT(0) | BIT(1)));
+
+	/* disable update TSF */
+	rtw_write8(adapter, REG_BCN_CTRL, rtw_read8(adapter, REG_BCN_CTRL) | BIT(4));
+}
+
 void mlmeext_sta_del_event_callback(struct adapter *padapter)
 {
 	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
 	struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
 
 	if (is_client_associated_to_ap(padapter) || is_IBSS_empty(padapter)) {
-		SetHwReg8188EU(padapter, HW_VAR_MLME_DISCONNECT, NULL);
+		mlme_disconnect(padapter);
 		SetHwReg8188EU(padapter, HW_VAR_BSSID, null_addr);
 
 		/* restore to initial setting. */
@@ -7166,7 +7179,7 @@ u8 join_cmd_hdl(struct adapter *padapter, u8 *pbuf)
 		/* set MSR to nolink -> infra. mode */
 		Set_MSR(padapter, _HW_STATE_STATION_);
 
-		SetHwReg8188EU(padapter, HW_VAR_MLME_DISCONNECT, NULL);
+		mlme_disconnect(padapter);
 	}
 
 	rtw_antenna_select_cmd(padapter, pparm->network.PhyInfo.Optimum_antenna, false);
@@ -7262,7 +7275,7 @@ u8 disconnect_hdl(struct adapter *padapter, unsigned char *pbuf)
 	if (is_client_associated_to_ap(padapter))
 		issue_deauth_ex(padapter, pnetwork->MacAddress, WLAN_REASON_DEAUTH_LEAVING, param->deauth_timeout_ms / 100, 100);
 
-	SetHwReg8188EU(padapter, HW_VAR_MLME_DISCONNECT, NULL);
+	mlme_disconnect(padapter);
 	SetHwReg8188EU(padapter, HW_VAR_BSSID, null_addr);
 
 	/* restore to initial setting. */

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1024,17 +1024,6 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 				ResumeTxBeacon(Adapter);
 		}
 		break;
-	case HW_VAR_MLME_DISCONNECT:
-		/* Set RCR to not to receive data frame when NO LINK state */
-		/* reject all data frames */
-		rtw_write16(Adapter, REG_RXFLTMAP2, 0x00);
-
-		/* reset TSF */
-		rtw_write8(Adapter, REG_DUAL_TSF_RST, (BIT(0) | BIT(1)));
-
-		/* disable update TSF */
-		rtw_write8(Adapter, REG_BCN_CTRL, rtw_read8(Adapter, REG_BCN_CTRL) | BIT(4));
-		break;
 	case HW_VAR_MLME_SITESURVEY:
 		if (*((u8 *)val)) { /* under sitesurvey */
 			/* config RCR to receive different BSSID & not to receive data frame */

drivers/staging/r8188eu/include/hal_intf.h

@@ -13,7 +13,6 @@ enum hw_variables {
 	HW_VAR_BSSID,
 	HW_VAR_BASIC_RATE,
 	HW_VAR_CORRECT_TSF,
-	HW_VAR_MLME_DISCONNECT,
 	HW_VAR_MLME_SITESURVEY,
 	HW_VAR_MLME_JOIN,
 	HW_VAR_SLOT_TIME,