tree 95090b63fbd9643693a8fe2e85b218356815bd4b
parent 11791a6f7534906b4a01ffb54ba0b02ca39398ef
author Christian Lamparter <chunkeey@googlemail.com> 1282513705 +0200
committer John W. Linville <linville@tuxdriver.com> 1282761200 -0400

mac80211: cancel restart_work in ieee80211_unregister_hw

Unlike most other workqueue-tasks, the restart_work is
not scheduled onto mac80211's private per-interface
workqueue, but onto one of the system-wide workqueues.

Therefore the mac80211-stack has to cancel any pending
restarts, before destroying the shared device context
and handing back the memory. Otherwise - under very
unlucky circumstances - there could be a stale work-
item left, because some other kernel component might
have delayed the execution of ieee80211_restart_work
for too long.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>