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When calling into the wext code from the NETDEV_UP notifier, we need to hold the devlist_mtx mutex as the wext code ends up calling into channel checks. Reported-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Tested-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>