From: Johannes Berg <johannes@sipsolutions.net>
To: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: [RFC] mac80211: fix resuming when device is gone
Date: Tue, 09 Aug 2011 11:45:13 +0200 [thread overview]
Message-ID: <1312883113.4109.5.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <20110809093909.GB2152@redhat.com>
On Tue, 2011-08-09 at 11:39 +0200, Stanislaw Gruszka wrote:
> Note, I assumed that ieee80211_reconfig() have no sense
> after ieee80211_unregister_hw()?
Yeah.
> > > Then if ieee80211_reconfig() is called, we schedule
> > > sta_cleanup timer. After that, when sysfs drop reference counter we
> > > free rdev. Then sta_info_cleanup() crash kernel.
> >
> > Ok let me get this straight -- even after device_del() we get a resume
> > callback from the core subsystem? That doesn't seem right.
>
> No, ieee80211_reconfig() is called before device_del() (but can be
> called right after ieee80211_unregister_hw() and perhaps
> ieee80211_free_hw).
Ah so it's racy.
But I think you meant to say resume() is called before device_del()?
johannes
next prev parent reply other threads:[~2011-08-09 9:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-08 14:19 [RFC] mac80211: fix resuming when device is gone Stanislaw Gruszka
2011-08-08 15:58 ` Johannes Berg
2011-08-09 9:23 ` Stanislaw Gruszka
2011-08-09 9:28 ` Johannes Berg
2011-08-09 9:29 ` Johannes Berg
2011-08-09 9:43 ` Stanislaw Gruszka
2011-08-09 9:39 ` Stanislaw Gruszka
2011-08-09 9:45 ` Johannes Berg [this message]
2011-08-09 11:36 ` Stanislaw Gruszka
2011-08-09 11:43 ` Johannes Berg
2011-08-09 11:45 ` Johannes Berg
2011-08-09 11:46 ` Johannes Berg
2011-08-09 11:47 ` Johannes Berg
2011-08-09 15:30 ` Stanislaw Gruszka
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