On 16/05/2018 23:02:16+0200, Giulio Benetti wrote:
> > > +static ssize_t frequency_test_enable_show(struct device *dev,
> > > + struct device_attribute *attr,
> > > + char *buf)
> > > +{
> >
> > > + int freq_test_en = 0;
> >
> > > + if (ctrl_reg & M41TXX_BIT_FT)
> > > + freq_test_en = true;
> > > + else
> > > + freq_test_en = false;
> > > +
> > > + return sprintf(buf, "%d\n", freq_test_en);
> >
> > So, is it boolean or integer? This code makes it confusing a lot.
>
> It is a boolean, so now I've updated with this:
>
> if (ctrl_reg & M41TXX_BIT_FT)
> return scnprintf(buf, PAGE_SIZE, "on\n");
> else
> return scnprintf(buf, PAGE_SIZE, "off\n");
>
No, it has to be consistent with what you write.
Here, you'd write 0 or 1 in the file and read off or on...
--
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
