mac80211: add rate control rewrite and enhance the performance of the minstrel algorithm for non-mrr configurations

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12948 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/mac80211/patches/417-cfg80211-fix-rename.patch

@@ -0,0 +1,32 @@
+Subject: cfg80211: fix debugfs error handling
+
+If something goes wrong creating the debugfs dir or when
+debugfs is not compiled in, the current code might lead to
+trouble; make it more robust.
+
+Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
+---
+ net/wireless/core.c |    5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+--- everything.orig/net/wireless/core.c	2008-10-08 10:13:49.000000000 +0200
++++ everything/net/wireless/core.c	2008-10-08 10:19:10.000000000 +0200
+@@ -185,7 +185,8 @@ int cfg80211_dev_rename(struct cfg80211_
+ 	if (result)
+ 		goto out_unlock;
+ 
+-	if (!debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
++	if (rdev->wiphy.debugfsdir &&
++	    !debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
+ 			    rdev->wiphy.debugfsdir,
+ 			    rdev->wiphy.debugfsdir->d_parent,
+ 			    newname))
+@@ -318,6 +319,8 @@ int wiphy_register(struct wiphy *wiphy)
+ 	drv->wiphy.debugfsdir =
+ 		debugfs_create_dir(wiphy_name(&drv->wiphy),
+ 				   ieee80211_debugfs_dir);
++	if (IS_ERR(drv->wiphy.debugfsdir))
++		drv->wiphy.debugfsdir = NULL;
+ 
+ 	res = 0;
+ out_unlock: