From 33c0360bf74d5fded34cb08d3512ada32ad661e4 Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes@sipsolutions.net> Date: Wed, 8 Oct 2008 10:23:48 +0200 Subject: [PATCH] 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> Signed-off-by: John W. Linville <linville@tuxdriver.com> --- net/wireless/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/wireless/core.c b/net/wireless/core.c index 24fdd4cd22c..5031db7b275 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -184,7 +184,8 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, 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)) @@ -317,6 +318,8 @@ 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: -- 2.41.3