wl12xx: refactor fw init into a new function

The fw boot and initialization currently happens inside the
add_interface() callback. This is wrong, as add_interface is
called for each new vif. However, we due to some fw limitation
(we have to know the actual mac address on boot), we can't
completely move it into the start() callback.

Until the fw will be fixed, refactor the fw init into
a new function, and call it from add_interface()
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/main.c

@@ -1888,60 +1888,12 @@ static int wl12xx_init_vif_data(struct ieee80211_vif *vif)
 	return 0;
 }
 
-static int wl1271_op_add_interface(struct ieee80211_hw *hw,
-				   struct ieee80211_vif *vif)
+static bool wl12xx_init_fw(struct wl1271 *wl)
 {
-	struct wl1271 *wl = hw->priv;
-	struct wiphy *wiphy = hw->wiphy;
-	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
 	int retries = WL1271_BOOT_RETRIES;
-	int ret = 0;
-	u8 role_type;
 	bool booted = false;
-
-	wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
-		     ieee80211_vif_type_p2p(vif), vif->addr);
-
-	mutex_lock(&wl->mutex);
-	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
-	 * opt out if that is the case.
-	 */
-	if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	ret = wl12xx_init_vif_data(vif);
-	if (ret < 0)
-		goto out;
-
-	wlvif->wl = wl;
-	role_type = wl12xx_get_role_type(wl, wlvif);
-	if (role_type == WL12XX_INVALID_ROLE_TYPE) {
-		ret = -EINVAL;
-		goto out;
-	}
-	/*
-	 * we still need this in order to configure the fw
-	 * while uploading the nvs
-	 */
-	memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
-
-	if (wl->state != WL1271_STATE_OFF) {
-		wl1271_error("cannot start because not in off state: %d",
-			     wl->state);
-		ret = -EBUSY;
-		goto out;
-	}
+	struct wiphy *wiphy = wl->hw->wiphy;
+	int ret;
 
 	while (retries) {
 		retries--;
@@ -1957,30 +1909,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 		if (ret < 0)
 			goto irq_disable;
 
-		if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
-		    wlvif->bss_type == BSS_TYPE_IBSS) {
-			/*
-			 * The device role is a special role used for
-			 * rx and tx frames prior to association (as
-			 * the STA role can get packets only from
-			 * its associated bssid)
-			 */
-			ret = wl12xx_cmd_role_enable(wl, vif->addr,
-							 WL1271_ROLE_DEVICE,
-							 &wlvif->dev_role_id);
-			if (ret < 0)
-				goto irq_disable;
-		}
-
-		ret = wl12xx_cmd_role_enable(wl, vif->addr,
-					     role_type, &wlvif->role_id);
-		if (ret < 0)
-			goto irq_disable;
-
-		ret = wl1271_init_vif_specific(wl, vif);
-		if (ret < 0)
-			goto irq_disable;
-
 		booted = true;
 		break;
 
@@ -2007,9 +1935,6 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 		goto out;
 	}
 
-	wl->vif = vif;
-	wl->state = WL1271_STATE_ON;
-	set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
 	wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
 
 	/* update hw/fw version info in wiphy struct */
@@ -2027,6 +1952,96 @@ static int wl1271_op_add_interface(struct ieee80211_hw *hw,
 	wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
 		     wl->enable_11a ? "" : "not ");
 
+	wl->state = WL1271_STATE_ON;
+out:
+	return booted;
+}
+
+static int wl1271_op_add_interface(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif)
+{
+	struct wl1271 *wl = hw->priv;
+	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
+	int ret = 0;
+	u8 role_type;
+	bool booted = false;
+
+	wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
+		     ieee80211_vif_type_p2p(vif), vif->addr);
+
+	mutex_lock(&wl->mutex);
+	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
+	 * opt out if that is the case.
+	 */
+	if (test_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags)) {
+		ret = -EBUSY;
+		goto out;
+	}
+
+	ret = wl12xx_init_vif_data(vif);
+	if (ret < 0)
+		goto out;
+
+	wlvif->wl = wl;
+	role_type = wl12xx_get_role_type(wl, wlvif);
+	if (role_type == WL12XX_INVALID_ROLE_TYPE) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/*
+	 * TODO: after the nvs issue will be solved, move this block
+	 * to start(), and make sure here the driver is ON.
+	 */
+	if (wl->state == WL1271_STATE_OFF) {
+		/*
+		 * we still need this in order to configure the fw
+		 * while uploading the nvs
+		 */
+		memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
+
+		booted = wl12xx_init_fw(wl);
+		if (!booted) {
+			ret = -EINVAL;
+			goto out;
+		}
+	}
+
+	if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
+	    wlvif->bss_type == BSS_TYPE_IBSS) {
+		/*
+		 * The device role is a special role used for
+		 * rx and tx frames prior to association (as
+		 * the STA role can get packets only from
+		 * its associated bssid)
+		 */
+		ret = wl12xx_cmd_role_enable(wl, vif->addr,
+						 WL1271_ROLE_DEVICE,
+						 &wlvif->dev_role_id);
+		if (ret < 0)
+			goto out;
+	}
+
+	ret = wl12xx_cmd_role_enable(wl, vif->addr,
+				     role_type, &wlvif->role_id);
+	if (ret < 0)
+		goto out;
+
+	ret = wl1271_init_vif_specific(wl, vif);
+	if (ret < 0)
+		goto out;
+
+	wl->vif = vif;
+	set_bit(WL1271_FLAG_IF_INITIALIZED, &wl->flags);
 out:
 	mutex_unlock(&wl->mutex);