On Thu, May 26, 2016 at 11:00:55AM +0200, Linus Walleij wrote:
> On Thu, May 12, 2016 at 8:42 PM, Uwe Kleine-König
> <u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
>
> > [added Linus Walleij to Cc, there is a question for you/him below]
> (...)
> >> +void mdio_device_reset(struct mdio_device *mdiodev, int value)
> >> +{
> >> + if (mdiodev->reset)
> >> + gpiod_set_value(mdiodev->reset, value);
> >
> > Before v4.6-rc1~108^2~91 it was not necessary to check for the first
> > parameter being non-NULL before calling gpiod_set_value. Linus, did you
> > change this on purpose?
>
> Not really. And AFAICT it is still not necessary: what changed is that
> an error message will be printed by VALIDATE_DESC() if you do that.
> And that is proper I guess? I think it's sloppy code to randomly pass in
> NULL to a call and just expect it to bail out, it seems more like
> exercising the error path than something you'd normally rely on.
>
> Or am I getting things wrong?
is the following sloppy?:
somegpio = gpiod_get_optional(dev, "some", GPIOD_OUT_LOW);
if (IS_ERR(somegpio))
return PTR_ERR(somegpio);
gpiod_set_value(somegpio, 1);
If not (as I assume) you really changed something as this might trigger
the warning.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
