tree cf8e7cde5d3bb4d0de5b6b451a4a47515630909a
parent b206b4ef062d83c0875a085672ed50e8c8b01521
author Johannes Berg <johannes.berg@intel.com> 1286392684 +0200
committer John W. Linville <linville@tuxdriver.com> 1286397043 -0400

cfg80211: fix BSS double-unlinking

When multiple interfaces are actively trying
to associate with the same BSS, they may both
find that the BSS isn't there and then try to
unlink it. This can cause errors since the
unlinking code can't currently deal with items
that have already been unlinked.

Normally this doesn't happen as most people
don't try to use multiple station interfaces
that associate at the same time too.

Fix this by using the list entry as a flag to
see if the item is still on a list.

Cc: stable@kernel.org
Reported-by: Ben Greear <greearb@candelatech.com>
Tested-by: Hun-Kyi Wynn <hkwynn@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>