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authorJohannes Berg <johannes@sipsolutions.net>2009-03-24 09:35:46 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-03-27 20:13:20 -0400
commit4bbf4d56583dd52c429d88f43cb614bdbe5deea6 (patch)
tree7a3f902a08820342254e0d67607fe870b02620b3 /net/wireless/Makefile
parent3832c287f11ba001bbe48e9be8c59cb9f71f6b43 (diff)
downloadblackbird-op-linux-4bbf4d56583dd52c429d88f43cb614bdbe5deea6.tar.gz
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cfg80211: fix locking in nl80211_set_wiphy
Luis reports that there's a circular locking dependency; this is because cfg80211_dev_rename() will acquire the cfg80211_mutex while the device mutex is held, while this normally is done the other way around. The solution is to open-code the device-getting in nl80211_set_wiphy and require holding the mutex around cfg80211_dev_rename rather than acquiring it within. Also fix a bug -- rtnl locking is expected by drivers so we need to provide it. Reported-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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