linux-kernel - [PATCH] staging: r8188eu: remove _linked_rx_signal_strength

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Date:   Fri, 25 Feb 2022 18:48:27 +0100
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [PATCH] staging: r8188eu: remove _linked_rx_signal_strength_display()

The function _linked_rx_signal_strength_display() only sets two local
variables that are not used after setting. Remove the function and
remove resulting dead code.

The HW_DEF_RA_INFO_DUMP case in GetHalDefVar8188EUsb() does not set
the passed variable. It just calls check_fwstate() which does nothing
than return true or false. So it is safe to remove this call to
GetHalDefVar8188EUsb().

The HAL_DEF_UNDERCORATEDSMOOTHEDPWDB case in GetHalDefVar8188EUsb()
does nothing than set the passed variable and it is safe to remove
this call to GetHalDefVar8188EUsb() as well.

Signed-off-by: Michael Straube <straube.linux@...il.com>
---
Tested on x86_64 with Inter-Tech DMG-02.

 drivers/staging/r8188eu/core/rtw_mlme_ext.c | 20 --------------------
 drivers/staging/r8188eu/hal/usb_halinit.c   | 13 -------------
 drivers/staging/r8188eu/include/hal_intf.h  |  2 --
 3 files changed, 35 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 0b77ddde6ce2..580d0c15b958 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -6834,23 +6834,6 @@ void mlmeext_sta_del_event_callback(struct adapter *padapter)
 Following are the functions for the timer handlers
 
 *****************************************************************************/
-static void _linked_rx_signal_strength_display(struct adapter *padapter)
-{
-	struct mlme_ext_priv    *pmlmeext = &padapter->mlmeextpriv;
-	struct mlme_ext_info    *pmlmeinfo = &pmlmeext->mlmext_info;
-	u8 mac_id;
-	int UndecoratedSmoothedPWDB;
-
-	if ((pmlmeinfo->state & 0x03) == WIFI_FW_STATION_STATE)
-		mac_id = 0;
-	else if ((pmlmeinfo->state & 0x03) == _HW_STATE_AP_)
-		mac_id = 2;
-
-	GetHalDefVar8188EUsb(padapter, HW_DEF_RA_INFO_DUMP, &mac_id);
-
-	GetHalDefVar8188EUsb(padapter, HAL_DEF_UNDERCORATEDSMOOTHEDPWDB, &UndecoratedSmoothedPWDB);
-}
-
 static u8 chk_ap_is_alive(struct sta_info *psta)
 {
 	u8 ret = false;
@@ -6886,9 +6869,6 @@ void linked_status_chk(struct adapter *padapter)
 	struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
 	struct sta_priv		*pstapriv = &padapter->stapriv;
 
-	if (padapter->bRxRSSIDisplay)
-		_linked_rx_signal_strength_display(padapter);
-
 	rtl8188e_sreset_linked_status_check(padapter);
 
 	if (is_client_associated_to_ap(padapter)) {
diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c
index 0704fa3156af..3eafc298f3e1 100644
--- a/drivers/staging/r8188eu/hal/usb_halinit.c
+++ b/drivers/staging/r8188eu/hal/usb_halinit.c
@@ -1399,16 +1399,6 @@ void GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariab
 	struct hal_data_8188e *haldata = &Adapter->haldata;
 
 	switch (eVariable) {
-	case HAL_DEF_UNDERCORATEDSMOOTHEDPWDB:
-		{
-			struct mlme_priv *pmlmepriv = &Adapter->mlmepriv;
-			struct sta_priv *pstapriv = &Adapter->stapriv;
-			struct sta_info *psta;
-			psta = rtw_get_stainfo(pstapriv, pmlmepriv->cur_network.network.MacAddress);
-			if (psta)
-				*((int *)pValue) = psta->rssi_stat.UndecoratedSmoothedPWDB;
-		}
-		break;
 	case HAL_DEF_IS_SUPPORT_ANT_DIV:
 		*((u8 *)pValue) = (haldata->AntDivCfg == 0) ? false : true;
 		break;
@@ -1418,9 +1408,6 @@ void GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariab
 	case HAL_DEF_DBG_DM_FUNC:
 		*((u32 *)pValue) = haldata->odmpriv.SupportAbility;
 		break;
-	case HW_DEF_RA_INFO_DUMP:
-		check_fwstate(&Adapter->mlmepriv, _FW_LINKED);
-		break;
 	case HAL_DEF_DBG_DUMP_RXPKT:
 		*((u8 *)pValue) = haldata->bDumpRxPkt;
 		break;
diff --git a/drivers/staging/r8188eu/include/hal_intf.h b/drivers/staging/r8188eu/include/hal_intf.h
index 8e204d61cc53..3cededa4dcfc 100644
--- a/drivers/staging/r8188eu/include/hal_intf.h
+++ b/drivers/staging/r8188eu/include/hal_intf.h
@@ -43,12 +43,10 @@ enum hw_variables {
 };
 
 enum hal_def_variable {
-	HAL_DEF_UNDERCORATEDSMOOTHEDPWDB,
 	HAL_DEF_IS_SUPPORT_ANT_DIV,
 	HAL_DEF_CURRENT_ANTENNA,
 	HAL_DEF_DBG_DUMP_RXPKT,/* for dbg */
 	HAL_DEF_DBG_DM_FUNC,/* for dbg */
-	HW_DEF_RA_INFO_DUMP,
 	HAL_DEF_DBG_DUMP_TXPKT,
 };
 
-- 
2.35.1