From: Michael Buesch <mb@bu3sch.de>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Subject: Re: mac80211/bcm43xx deadlock
Date: Wed, 27 Jun 2007 14:48:57 +0200 [thread overview]
Message-ID: <200706271448.58087.mb@bu3sch.de> (raw)
In-Reply-To: <1182937106.4769.10.camel@johannes.berg>
On Wednesday 27 June 2007 11:38:26 Johannes Berg wrote:
> On Tue, 2007-06-26 at 16:17 +0200, Michael Buesch wrote:
>
> > That's a known bug.
> > See the FIXME at stop_core() where we stop the mac80211-queues.
> > mac80211 needs to be fixed to fix this. ;)
> > We need a function to stop and flush the TX queues from
> > _outside_ of the TX handlers.
>
> Are you sure it's the same bug? I don't think we get into
Pretty, yeah. I'm probably going to solve this bug elsewhere.
Need to think about it.
> ieee80211_if_shutdown from bcm43xx itself.
bcm43xx causes it only imlicitely. Calling ieee80211_stop_queues()
(from outside of the TX path) will result in a deadlock in the
qdisc handler, which will result in a complete system freeze on UP.
So bcm43xx won't show up in the call-trace.
--
Greetings Michael.
next prev parent reply other threads:[~2007-06-27 12:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-26 8:59 mac80211/bcm43xx deadlock Johannes Berg
2007-06-26 10:14 ` Johannes Berg
2007-06-29 6:14 ` Michael Wu
2007-06-26 14:17 ` Michael Buesch
2007-06-27 9:38 ` Johannes Berg
2007-06-27 12:48 ` Michael Buesch [this message]
2007-06-27 14:06 ` Johannes Berg
2007-06-27 14:21 ` Johannes Berg
2007-06-27 18:02 ` Johannes Berg
2007-07-18 18:13 ` John W. Linville
2007-07-18 20:28 ` Michael Wu
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