wl12xx: delete wl->vif (and allow multiple vifs)

Delete the global wl->vif (and the checks on it),
so multiple vifs could be added.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/main.c

@@ -2186,13 +2186,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	if (ret < 0)
 		goto out_unlock;
 
-	if (wl->vif) {
-		wl1271_debug(DEBUG_MAC80211,
-			     "multiple vifs are not supported yet");
-		ret = -EBUSY;
-		goto out;
-	}
-
 	/*
 	 * in some very corner case HW recovery scenarios its possible to
 	 * get here before __wl1271_op_remove_interface is complete, so
@@ -2265,7 +2258,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	if (ret < 0)
 		goto out;
 
-	wl->vif = vif;
 	list_add(&wlvif->list, &wl->wlvif_list);
 	set_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags);
 
@@ -2298,8 +2290,6 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 	if (!test_and_clear_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
 		return;
 
-	wl->vif = NULL;
-
 	/* because of hardware recovery, we may get here twice */
 	if (wl->state != WL1271_STATE_ON)
 		return;
@@ -5291,7 +5281,6 @@ static struct ieee80211_hw *wl1271_alloc_hw(void)
 	wl->rx_counter = 0;
 	wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
 	wl->band = IEEE80211_BAND_2GHZ;
-	wl->vif = NULL;
 	wl->flags = 0;
 	wl->sg_enabled = true;
 	wl->hw_pg_ver = -1;

drivers/net/wireless/wl12xx/wl12xx.h

@@ -445,8 +445,6 @@ struct wl1271 {
 	struct wl12xx_fw_status *fw_status;
 	struct wl1271_tx_hw_res_if *tx_res_if;
 
-	struct ieee80211_vif *vif;
-
 	/* Current chipset configuration */
 	struct conf_drv_settings conf;