linux-kernel - Re: [PATCH 5/6] wl1251: Parse and use MAC address from supplied NVS data

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Message-Id: <201612241940.24299@pali>
Date:   Sat, 24 Dec 2016 19:40:24 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Pavel Machek <pavel@....cz>
Cc:     Ming Lei <ming.lei@...onical.com>,
        "Luis R. Rodriguez" <mcgrof@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        David Gnedt <david.gnedt@...izone.at>,
        Michal Kazior <michal.kazior@...to.com>,
        Daniel Wagner <wagi@...om.org>,
        Tony Lindgren <tony@...mide.com>,
        Sebastian Reichel <sre@...nel.org>,
        Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Grazvydas Ignotas <notasas@...il.com>,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH 5/6] wl1251: Parse and use MAC address from supplied NVS data

On Saturday 24 December 2016 19:14:21 Pavel Machek wrote:
> On Sat 2016-12-24 17:53:00, Pali Rohár wrote:
> > @@ -1581,10 +1598,16 @@ int wl1251_init_ieee80211(struct wl1251
> > *wl)
> > 
> >  	wl->hw->queues = 4;
> > 
> > +	if (wl->nvs == NULL && !wl->use_eeprom) {
> > +		ret = wl1251_fetch_nvs(wl);
> > +		if (ret < 0)
> > +			goto out;
> > +	}
> 
> Is goto out here good idea? IMNSHO it is copy&paste bug, it should
> just proceed with generating random address.

No, goto is correct here. wl1251 cannot be initialized without NVS data. 
And when fetching (from userspace) fails it is fatal error.

-- 
Pali Rohár
pali.rohar@...il.com

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