Re: [PATCH] uio: uio_pdrv_genirq V2

["Magnus Damm" <magnus.damm@gmail.com>]

On Thu, Jul 10, 2008 at 7:58 PM, Hans J. Koch <hjk@linutronix.de> wrote:
> On Thu, Jul 10, 2008 at 08:56:39AM +0200, Uwe Kleine-König 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.

I'd say that this is a non-issue.

Only uio_pdrv_genirq_remove() is using the platform data. This
remove() method won't be called if uio_pdrv_genirq_probe() returns
failure. The UIO subsystem is using uioinfo->priv which of course is
set up correctly already.

Thanks,

/ magnus