staging: vt6656: call vnt_update_pre_ed_threshold from vnt_config.

vnt_update_pre_ed_threshold needs to be updated more often so
call from vnt_config where it updated on any of config changes.

It must have maximum sensitivity when the device is off channel
or idle.

Remove all the other calls in scanning and bss.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/1b00c112-347c-b0bb-61ed-a874ee448ff8@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/main_usb.c

@@ -765,6 +765,12 @@ static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 	if (changed & IEEE80211_CONF_CHANGE_POWER)
 		vnt_rf_setpower(priv, conf->chandef.chan);
 
+	if (conf->flags & (IEEE80211_CONF_OFFCHANNEL | IEEE80211_CONF_IDLE))
+		/* Set max sensitivity*/
+		vnt_update_pre_ed_threshold(priv, true);
+	else
+		vnt_update_pre_ed_threshold(priv, false);
+
 	return 0;
 }
 
@@ -814,7 +820,6 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 		vnt_set_short_slot_time(priv);
 		vnt_update_ifs(priv);
 		vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
-		vnt_update_pre_ed_threshold(priv, false);
 	}
 
 	if (changed & (BSS_CHANGED_TXPOWER | BSS_CHANGED_BANDWIDTH))
@@ -934,25 +939,6 @@ static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	return 0;
 }
 
-static void vnt_sw_scan_start(struct ieee80211_hw *hw,
-			      struct ieee80211_vif *vif,
-			      const u8 *addr)
-{
-	struct vnt_private *priv = hw->priv;
-
-	/* Set max sensitivity*/
-	vnt_update_pre_ed_threshold(priv, true);
-}
-
-static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
-				 struct ieee80211_vif *vif)
-{
-	struct vnt_private *priv = hw->priv;
-
-	/* Return sensitivity to channel level*/
-	vnt_update_pre_ed_threshold(priv, false);
-}
-
 static int vnt_get_stats(struct ieee80211_hw *hw,
 			 struct ieee80211_low_level_stats *stats)
 {
@@ -998,8 +984,6 @@ static const struct ieee80211_ops vnt_mac_ops = {
 	.prepare_multicast	= vnt_prepare_multicast,
 	.configure_filter	= vnt_configure,
 	.set_key		= vnt_set_key,
-	.sw_scan_start		= vnt_sw_scan_start,
-	.sw_scan_complete	= vnt_sw_scan_complete,
 	.get_stats		= vnt_get_stats,
 	.get_tsf		= vnt_get_tsf,
 	.set_tsf		= vnt_set_tsf,