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

   1 Subject: cfg80211: fix debugfs error handling
   2
   3 If something goes wrong creating the debugfs dir or when
   4 debugfs is not compiled in, the current code might lead to
   5 trouble; make it more robust.
   6
   7 Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
   8 ---
   9  net/wireless/core.c |    5 ++++-
  10  1 file changed, 4 insertions(+), 1 deletion(-)
  11
  12 --- everything.orig/net/wireless/core.c 2008-10-08 10:13:49.000000000 +0200
  13 +++ everything/net/wireless/core.c      2008-10-08 10:19:10.000000000 +0200
  14 @@ -185,7 +185,8 @@ int cfg80211_dev_rename(struct cfg80211_
  15         if (result)
  16                 goto out_unlock;
  17
  18 -       if (!debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
  19 +       if (rdev->wiphy.debugfsdir &&
  20 +           !debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
  21                             rdev->wiphy.debugfsdir,
  22                             rdev->wiphy.debugfsdir->d_parent,
  23                             newname))
  24 @@ -318,6 +319,8 @@ int wiphy_register(struct wiphy *wiphy)
  25         drv->wiphy.debugfsdir =
  26                 debugfs_create_dir(wiphy_name(&drv->wiphy),
  27                                    ieee80211_debugfs_dir);
  28 +       if (IS_ERR(drv->wiphy.debugfsdir))
  29 +               drv->wiphy.debugfsdir = NULL;
  30
  31         res = 0;
  32  out_unlock: