linux-kernel - Re: [PATCH] staging: r8188eu: Remove goto to no-op exit label

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Date:   Sat, 2 Apr 2022 13:45:33 +0200
From:   Martin Kaiser <martin@...ser.cx>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     Ira Weiny <ira.weiny@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        outreachy@...ts.linux.dev
Subject: Re: [PATCH] staging: r8188eu: Remove goto to no-op exit label

Thus wrote Fabio M. De Francesco (fmdefrancesco@...il.com):

> > >  	pnpi = netdev_priv(netdev);

> > >  	if (!pnpi->priv)
> > > -		goto RETURN;
> > > +		return;

> I cannot see how pnpi->priv might ever be NULL.

Even if pnpi->priv was NULL, we wouldn't need the check. It's ok to call
vfree(NULL).

> After the two removals I've talked about above, the code will always call 
> vfree(pnpi->priv) and then free_netdev(netdev).

That makes sense.

Best regards,
Martin