Re: [PATCH v1 01/11] mfd: intel_soc_pmic_bxtwc: Don't shadow error codes in show()/store()

From: Andy Shevchenko
Date: Tue Jun 28 2022 - 05:45:57 EST


On Mon, Jun 27, 2022 at 10:05:07AM +0100, Lee Jones wrote:
> On Thu, 16 Jun 2022, Andy Shevchenko wrote:

...

> > + ret = kstrtoul(buf, 0, &bxtwc_reg_addr);
> > + if (ret) {
> > dev_err(dev, "Invalid register address\n");
>
> Is that really what failure means, on every failure?
>
> "Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing
> error."

As far as I can see in either case the address is invalid.
Basically we may drop this confusing error message here, if
this what you prefer.

> > - return -EINVAL;
> > + return ret;
> > }

--
With Best Regards,
Andy Shevchenko