Re: [PATCH v3 18/19] hwmon: (mr75203) add debugfs to read and write temperature coefficients

Andy Shevchenko
2022-09-01T19:47:08Z

On Thu, Sep 01, 2022 at 09:54:21AM +0300, Farber, Eliav wrote:
> On 8/31/2022 3:14 PM, Andy Shevchenko wrote:
> > On Tue, Aug 30, 2022 at 07:22:11PM +0000, Eliav Farber wrote:

...

> > > +     pvt->dbgfs_dir = debugfs_create_dir(dev_name(dev), NULL);
> >
> > > +     if (!pvt->dbgfs_dir) {
> > > +             dev_err(dev, "Failed to create dbgfs_dir\n");
> > > +             return -EINVAL;
> > > +     }
> >
> > No, just don't check the return value of debugfs API calls.
> >
> Do you mean that I should just do:
> debugfs_create_dir(dev_name(dev), NULL);
> Can you please explain why it's OK to ignore the return value?

Author of the debugfs is speaking:
https://patchwork.kernel.org/project/linux-wireless/patch/20190122152151.16139-38-gregkh@linuxfoundation.org/

--
With Best Regards,
Andy Shevchenko