linux-kernel - Re: [PATCH] uio: uio_pdrv

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Message-ID: <20080710110631.GA582@digi.com>
Date:	Thu, 10 Jul 2008 13:06:31 +0200
From:	Uwe Kleine-König <Uwe.Kleine-Koenig@...i.com>
To:	"Hans J. Koch" <hjk@...utronix.de>
CC:	Magnus Damm <magnus.damm@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"gregkh@...e.de" <gregkh@...e.de>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"lethal@...ux-sh.org" <lethal@...ux-sh.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"alan@...rguk.ukuu.org.uk" <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] uio: uio_pdrv_genirq V2

Hi,

Hans J. Koch wrote:
> > > +       ret = uio_register_device(&pdev->dev, priv->uioinfo);
> > > +       if (ret) {
> > > +               dev_err(&pdev->dev, "unable to register uio device\n");
> > > +               goto bad1;
> > > +       }
> > > +
> > > +       platform_set_drvdata(pdev, priv);
> > This should probably go before uio_register_device.  (Uups, this is an
> > issue for uio_pdrv, too.)
> 
> Yes, because uio_register_device will enable the irq, and you might
> arrive in the handler without having your platform data in place.
How do we want to fix that?  Should I sent a new version that also
includes the memory-leak fix and copyright specification?  Or another
incremental patch?

Best regards
Uwe

-- 
Uwe Kleine-König, Software Engineer
Digi International GmbH Branch Breisach, Küferstrasse 8, 79206 Breisach, Germany
Tax: 315/5781/0242 / VAT: DE153662976 / Reg. Amtsgericht Dortmund HRB 13962
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