From: Ivo van Doorn <ivdoorn@gmail.com>
Date: Wed, 6 Aug 2008 14:18:31 +0000 (+0200)
Subject: rt2x00: Block all unsupported modes
X-Git-Tag: v2.6.27-rc3~69^2~7
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0fc980392e5a06cff34ca7acaac5790bb59528d1;p=linux-2.6

rt2x00: Block all unsupported modes

It was possible for unsupported operating modes
to be accepted by the add_interface callback function.
This patch will block those modes until proper support
has been implemented for them.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index bd422fd6a8..d065073886 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -203,23 +203,43 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	    !test_bit(DEVICE_STARTED, &rt2x00dev->flags))
 		return -ENODEV;
 
-	/*
-	 * We don't support mixed combinations of sta and ap virtual
-	 * interfaces. We can only add this interface when the rival
-	 * interface count is 0.
-	 */
-	if ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) ||
-	    (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count))
-		return -ENOBUFS;
-
-	/*
-	 * Check if we exceeded the maximum amount of supported interfaces.
-	 */
-	if ((conf->type == IEEE80211_IF_TYPE_AP &&
-	     rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) ||
-	    (conf->type != IEEE80211_IF_TYPE_AP &&
-	     rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf))
-		return -ENOBUFS;
+	switch (conf->type) {
+	case IEEE80211_IF_TYPE_AP:
+		/*
+		 * We don't support mixed combinations of
+		 * sta and ap interfaces.
+		 */
+		if (rt2x00dev->intf_sta_count)
+			return -ENOBUFS;
+
+		/*
+		 * Check if we exceeded the maximum amount
+		 * of supported interfaces.
+		 */
+		if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf)
+			return -ENOBUFS;
+
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS:
+		/*
+		 * We don't support mixed combinations of
+		 * sta and ap interfaces.
+		 */
+		if (rt2x00dev->intf_ap_count)
+			return -ENOBUFS;
+
+		/*
+		 * Check if we exceeded the maximum amount
+		 * of supported interfaces.
+		 */
+		if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)
+			return -ENOBUFS;
+
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	/*
 	 * Loop through all beacon queues to find a free