netdev - [PATCH 2/2] cfg80211: fix wireless handlers assignment

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Date:	Sun, 27 Sep 2009 20:27:55 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	netdev <netdev@...r.kernel.org>
Cc:	linux-wireless <linux-wireless@...r.kernel.org>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>
Subject: [PATCH 2/2] cfg80211: fix wireless handlers assignment

The point we assign dev->wireless_handlers at is too
late, we need to do that before netdev_register_kobject()
gets called, so use the new NETDEV_PRE_INIT notifier.
The result of adding wireless_handlers too late is the
disappearance of /sys/class/net/wlan0/wireless which a
bunch of distro scripts still require.

Signed-off-by: Johannes Berg <johannes@...solutions.net>
---
This should fix the regression Hugh reported (of course requires the
other patch which unfortunately I forgot to CC you, Hugh, I'll send you
a copy in private).

 net/wireless/core.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- wireless-testing.orig/net/wireless/core.c	2009-09-27 15:12:20.000000000 +0200
+++ wireless-testing/net/wireless/core.c	2009-09-27 15:12:54.000000000 +0200
@@ -641,6 +641,12 @@ static int cfg80211_netdev_notifier_call
 	WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED);
 
 	switch (state) {
+	case NETDEV_PRE_INIT:
+#ifdef CONFIG_WIRELESS_EXT
+		if (!dev->wireless_handlers)
+			dev->wireless_handlers = &cfg80211_wext_handler;
+#endif
+		break;
 	case NETDEV_REGISTER:
 		/*
 		 * NB: cannot take rdev->mtx here because this may be
@@ -666,8 +672,6 @@ static int cfg80211_netdev_notifier_call
 		wdev->sme_state = CFG80211_SME_IDLE;
 		mutex_unlock(&rdev->devlist_mtx);
 #ifdef CONFIG_WIRELESS_EXT
-		if (!dev->wireless_handlers)
-			dev->wireless_handlers = &cfg80211_wext_handler;
 		wdev->wext.default_key = -1;
 		wdev->wext.default_mgmt_key = -1;
 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;


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