[PATCH] libertas: split wlan_add_card()

Split wlan_add_card() into a part that just setups kernel parameters and
into the function libertas_activate_card(), which will implizitly use
hardware functions by the started thread.

This allows us later to do something like this:

priv = libertas_add_card();
priv->hw_command_to_host = if_usb_command_to_host;
priv->hw_xxxx = if_usb_xxxx;
priv->hw_yyyy = if_usb_yyyy;
wlan_activate_card()

and of course the CF driver can set it's own functions.
Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/decl.h

@@ -77,6 +77,7 @@ void libertas_send_iwevcustom_event(wlan_private * priv, s8 * str);
 extern struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band,
 						             int *cfp_no);
 wlan_private *wlan_add_card(void *card);
+int libertas_activate_card(wlan_private *priv);
 int wlan_remove_card(wlan_private *priv);
 int wlan_add_mesh(wlan_private *priv);
 void wlan_remove_mesh(wlan_private *priv);

drivers/net/wireless/libertas/if_usb.c

@@ -195,6 +195,9 @@ static int if_usb_probe(struct usb_interface *intf,
 	if (!(priv = wlan_add_card(usb_cardp)))
 		goto dealloc;
 
+	if (libertas_activate_card(priv))
+		goto dealloc;
+
 	if (libertas_found < MAX_DEVS) {
 		libertas_devs[libertas_found] = priv->wlan_dev.netdev;
 		libertas_found++;

drivers/net/wireless/libertas/main.c

@@ -812,6 +812,21 @@ wlan_private *wlan_add_card(void *card)
 	spin_lock_init(&priv->adapter->driver_lock);
 	init_waitqueue_head(&priv->adapter->cmd_pending);
 	priv->adapter->nr_cmd_pending = 0;
+	goto done;
+
+err_kzalloc:
+	free_netdev(dev);
+done:
+	lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
+	return priv;
+}
+
+int libertas_activate_card(wlan_private *priv)
+{
+	struct net_device *dev = priv->wlan_dev.netdev;
+	int ret = -1;
+
+	lbs_deb_enter(LBS_DEB_MAIN);
 
 	lbs_deb_thread("Starting kthread...\n");
 	priv->mainthread.priv = priv;
@@ -847,8 +862,8 @@ wlan_private *wlan_add_card(void *card)
 
 	libertas_debugfs_init_one(priv, dev);
 
-	lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
-	return priv;
+	ret = 0;
+	goto done;
 
 err_init_fw:
 	libertas_sbi_unregister_dev(priv);
@@ -858,11 +873,10 @@ wlan_private *wlan_add_card(void *card)
 	wake_up_interruptible(&priv->mainthread.waitq);
 	wlan_terminate_thread(&priv->mainthread);
 	kfree(priv->adapter);
-err_kzalloc:
 	free_netdev(dev);
-
-	lbs_deb_leave_args(LBS_DEB_NET, "priv NULL");
-	return NULL;
+done:
+	lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
+	return ret;
 }
 
 /**