From: Johannes Berg <johannes@sipsolutions.net>
Date: Thu, 29 Oct 2009 07:34:00 +0000 (+0100)
Subject: mac80211: fix addba timer
X-Git-Tag: v2.6.32-rc6~9^2^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2171abc58644e09dbba546d91366b12743115396;p=pandora-kernel.git

mac80211: fix addba timer

The addba timer function acquires the sta spinlock,
but at the same time we try to del_timer_sync() it
under the spinlock which can produce deadlocks.

To fix this, always del_timer_sync() the timer in
ieee80211_process_addba_resp() and add it again
after checking the conditions, if necessary.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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