On Wed, 20 Feb 2013, Marcus Cooper wrote:
> On 20 February 2013 09:13, Lee Jones <lee.jo...@linaro.org> wrote:
> > On Tue, 19 Feb 2013, Arnd Bergmann wrote:
> >
> >> On Friday 15 February 2013, Lee Jones wrote:
> >> > struct ab8500 *ab8500;
> >> > + int chip_id = -EINVAL;
> >> >
> >> > ab8500 = dev_get_drvdata(dev);
> >> > - return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL);
> >> > + if(ab8500) {
> >> > + chip_id = ab8500->chip_id;
> >> > + if((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
> >> > ab8500->version != 0xFF)
> >> > + chip_id = (ab8500->version << 8) | chip_id;
> >> > + }
> >> > + return sprintf(buf, "%#x\n", chip_id);
> >> > }
> >>
> >> What's the use of printing "ffffffea" for unknown versions here?
> >
> > You mean instead of -EINVAL? No idea, Marcus?
> >
> Looks like I'm guilty of just making the minimal changes. Arnd is
> right though, getting ffffffea(-EINVAL) back is pretty useless.
> I'll have to check user land to see what is using this.
Yes, it would be useful to know how it's parsed.
Thanks Marcus.
> Maybe not
> printing and returning 0 should be the correct behaviour
> when an unknown version is found.
--
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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