netdev - Re: [PATCH] softmac: Fixed handling of deassociation from AP

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Date:	Wed, 6 Dec 2006 21:17:15 +0100
From:	Ulrich Kunitz <kune@...ne-taler.de>
To:	Michael Buesch <mb@...sch.de>
Cc:	Larry Finger <Larry.Finger@...inger.net>, netdev@...r.kernel.org,
	Bcm43xx-dev@...ts.berlios.de, Stefano Brivio <st3@...eup.net>,
	John Linville <linville@...driver.com>
Subject: Re: [PATCH] softmac: Fixed handling of deassociation from AP

On 06-12-06 18:52 Michael Buesch wrote:

> All data in mac->associnfo is protected by mac->associnfo->mutex
> and _not_ mac->lock.

Are you sure? One can find for instance the following function in
ieee80211softmac_assoc.c:

void
ieee80211softmac_disassoc(struct ieee80211softmac_device *mac)
{
        unsigned long flags;

        spin_lock_irqsave(&mac->lock, flags);
        if (mac->associnfo.associating)
                cancel_delayed_work(&mac->associnfo.timeout);

        netif_carrier_off(mac->dev);

        mac->associnfo.associated = 0;
        mac->associnfo.bssvalid = 0;
        mac->associnfo.associating = 0;
        ieee80211softmac_init_bss(mac);
        ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL);
        spin_unlock_irqrestore(&mac->lock, flags);
}

Cheers,

Uli

-- 
Uli Kunitz
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