[PATCH] libertas: remove adapter->listeninterval

listeninterval was initialized with MRVDRV_DEFAULT_LISTEN_INTERVAL, but
there exists that would ever change it. So we can use this define directly.
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/dev.h

@@ -287,7 +287,6 @@ struct _wlan_adapter {
 	u32 fragthsd;
 	u32 rtsthsd;
 
-	u16 listeninterval;
 	u8 txretrycount;
 
 	/** Tx-related variables (for single packet tx) */

drivers/net/wireless/libertas/join.c

@@ -369,7 +369,7 @@ int libertas_cmd_80211_associate(wlan_private * priv,
 	pos += sizeof(passo->peerstaaddr);
 
 	/* set the listen interval */
-	passo->listeninterval = cpu_to_le16(adapter->listeninterval);
+	passo->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
 
 	pos += sizeof(passo->capability);
 	pos += sizeof(passo->listeninterval);

drivers/net/wireless/libertas/main.c

@@ -1051,8 +1051,6 @@ static void wlan_init_adapter(wlan_private * priv)
 
 	adapter->psmode = WLAN802_11POWERMODECAM;
 
-	adapter->listeninterval = MRVDRV_DEFAULT_LISTEN_INTERVAL;
-
 	adapter->psstate = PS_STATE_FULL_POWER;
 	adapter->needtowakeup = 0;