mac80211: clean up remain-on-channel on interface stop
authorJohannes Berg <johannes.berg@intel.com>
Thu, 31 May 2012 13:09:27 +0000 (15:09 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 17 Jun 2012 18:21:25 +0000 (11:21 -0700)
commitd4bb7f49f4d5ea7a287899178df55b4725bb32d2
treec64f85367ff571a42d3a5fcb76c871a9632463a1
parent721632c39add11e5d5fa5dd8b956dcae63d02b17
mac80211: clean up remain-on-channel on interface stop

commit 71ecfa1893034eeb1c93e02e22ee2ad26d080858 upstream.

When any interface goes down, it could be the one that we
were doing a remain-on-channel with. We therefore need to
cancel the remain-on-channel and flush the related work
structs so they don't run after the interface has been
removed or even destroyed.

It's also possible in this case that an off-channel SKB
was never transmitted, so free it if this is the case.
Note that this can also happen if the driver finishes
the off-channel period without ever starting it.

Reported-by: Nirav Shah <nirav.j2.shah@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/mac80211/iface.c
net/mac80211/offchannel.c