tree 332a12ee08d6b7e974c545041a9e1aaf7dfba80d
parent 601ae7f25aea58f208a7f640f6174aac0652403a
author Eric W. Biederman <ebiederm@xmission.com> 1210282218 -0700
committer John W. Linville <linville@tuxdriver.com> 1210796989 -0400

wireless: Add missing locking to cfg80211_dev_rename

device_rename only performs useful and race free validity
checking at the optional sysfs level so depending on it
for all of the validity checking in cfg80211_dev_rename
is racy.

Instead implement all of the needed validity checking
and locking in cfg80211_dev_rename.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>