staging: brcm80211: remove unused function from wlc_stf.c

Working through a list of unused functions in the driver tree.
This file has following redundant function(s):

wlc_stf_stbc_rx_get
wlc_stf_rxchain_set
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Reviewed-by: Henry Ptasinski <henryp@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmsmac/wlc_stf.c

@@ -44,7 +44,6 @@
 #define WLC_STF_SS_STBC_RX(wlc) (WLCISNPHY(wlc->band) && \
 	NREV_GT(wlc->band->phyrev, 3) && NREV_LE(wlc->band->phyrev, 6))
 
-static s8 wlc_stf_stbc_rx_get(struct wlc_info *wlc);
 static bool wlc_stf_stbc_tx_set(struct wlc_info *wlc, s32 int_val);
 static int wlc_stf_txcore_set(struct wlc_info *wlc, u8 Nsts, u8 val);
 static int wlc_stf_spatial_policy_set(struct wlc_info *wlc, int val);
@@ -151,12 +150,6 @@ wlc_stf_ss_algo_channel_get(struct wlc_info *wlc, u16 *ss_algo_channel,
 		setbit(ss_algo_channel, PHY_TXC1_MODE_STBC);
 }
 
-static s8 wlc_stf_stbc_rx_get(struct wlc_info *wlc)
-{
-	return (wlc->ht_cap.cap_info & HT_CAP_RX_STBC_MASK)
-		>> HT_CAP_RX_STBC_SHIFT;
-}
-
 static bool wlc_stf_stbc_tx_set(struct wlc_info *wlc, s32 int_val)
 {
 	if ((int_val != AUTO) && (int_val != OFF) && (int_val != ON)) {
@@ -310,69 +303,6 @@ int wlc_stf_txchain_set(struct wlc_info *wlc, s32 int_val, bool force)
 	return BCME_OK;
 }
 
-int wlc_stf_rxchain_set(struct wlc_info *wlc, s32 int_val)
-{
-	u8 rxchain_cnt;
-	u8 rxchain = (u8) int_val;
-	u8 mimops_mode;
-	u8 old_rxchain, old_rxchain_cnt;
-
-	if (wlc->stf->rxchain == rxchain)
-		return BCME_OK;
-
-	if ((rxchain & ~wlc->stf->hw_rxchain)
-	    || !(rxchain & wlc->stf->hw_rxchain))
-		return BCME_RANGE;
-
-	rxchain_cnt = (u8) WLC_BITSCNT(rxchain);
-	if (WLC_STF_SS_STBC_RX(wlc)) {
-		if ((rxchain_cnt == 1)
-		    && (wlc_stf_stbc_rx_get(wlc) != HT_CAP_RX_STBC_NO))
-			return BCME_RANGE;
-	}
-
-	if (APSTA_ENAB(wlc->pub) && (wlc->pub->associated))
-		return BCME_ASSOCIATED;
-
-	old_rxchain = wlc->stf->rxchain;
-	old_rxchain_cnt = wlc->stf->rxstreams;
-
-	wlc->stf->rxchain = rxchain;
-	wlc->stf->rxstreams = rxchain_cnt;
-
-	if (rxchain_cnt != old_rxchain_cnt) {
-		mimops_mode =
-		    (rxchain_cnt == 1) ? HT_CAP_MIMO_PS_ON : HT_CAP_MIMO_PS_OFF;
-		wlc->mimops_PM = mimops_mode;
-		if (AP_ENAB(wlc->pub)) {
-			wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
-					      wlc->stf->rxchain);
-			wlc_ht_mimops_cap_update(wlc, mimops_mode);
-			if (wlc->pub->associated)
-				wlc_mimops_action_ht_send(wlc, wlc->cfg,
-							  mimops_mode);
-			return BCME_OK;
-		}
-		if (wlc->pub->associated) {
-			if (mimops_mode == HT_CAP_MIMO_PS_OFF) {
-				/* if mimops is off, turn on the Rx chain first */
-				wlc_phy_stf_chain_set(wlc->band->pi,
-						      wlc->stf->txchain,
-						      wlc->stf->rxchain);
-				wlc_ht_mimops_cap_update(wlc, mimops_mode);
-			}
-		} else {
-			wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
-					      wlc->stf->rxchain);
-			wlc_ht_mimops_cap_update(wlc, mimops_mode);
-		}
-	} else if (old_rxchain != rxchain)
-		wlc_phy_stf_chain_set(wlc->band->pi, wlc->stf->txchain,
-				      wlc->stf->rxchain);
-
-	return BCME_OK;
-}
-
 /* update wlc->stf->ss_opmode which represents the operational stf_ss mode we're using */
 int wlc_stf_ss_update(struct wlc_info *wlc, struct wlcband *band)
 {

drivers/staging/brcm80211/brcmsmac/wlc_stf.h

@@ -30,7 +30,6 @@ extern void wlc_stf_ss_algo_channel_get(struct wlc_info *wlc,
 extern int wlc_stf_ss_update(struct wlc_info *wlc, struct wlcband *band);
 extern void wlc_stf_phy_txant_upd(struct wlc_info *wlc);
 extern int wlc_stf_txchain_set(struct wlc_info *wlc, s32 int_val, bool force);
-extern int wlc_stf_rxchain_set(struct wlc_info *wlc, s32 int_val);
 extern bool wlc_stf_stbc_rx_set(struct wlc_info *wlc, s32 int_val);
 
 extern int wlc_stf_ant_txant_validate(struct wlc_info *wlc, s8 val);