Subject: Re: Question about mac80211 callback
From: Johannes Berg <johannes@sipsolutions.net>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: wireless <linux-wireless@vger.kernel.org>
In-Reply-To: <4B09EF44.3050804@lwfinger.net>
References: <4B09EF44.3050804@lwfinger.net>
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Date: Mon, 23 Nov 2009 10:38:10 +0100
Message-ID: <1258969090.7094.133.camel@johannes.local>
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Sender: linux-wireless-owner@vger.kernel.org


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Larry,

> I tried to figure this out from the code, but I kept getting lost.
>=20
> When a computer goes into hibernation, which of the mac80211 callback rou=
tines
> are called, and which ones on the following resume?=20

mac80211 will be called via cfg80211, and will run __ieee80211_suspend()
which calls a whole bunch of driver things. This is _before_ the
driver's suspend() callback runs.

Then, after the driver's resume() callback runs, we go into
ieee80211_reconfig() in mac80211.

You can find the interaction with the PM subsystem in
net/wireless/sysfs.c.

> The problem arises due to
> the problem in Bug #14267.=20

Wrong bug number?

johannes


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