Re: [PATCH v3 2/3] gpiolib: Support 'gpio-reserved-ranges' property

[Stephen Boyd]

Quoting Andy Shevchenko (2018-03-21 10:59:10)
> On Wed, 2018-03-21 at 09:58 -0700, Stephen Boyd wrote:
> > From: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> > 
> > Some qcom platforms make some GPIOs or pins unavailable for use by
> > non-secure operating systems, and thus reading or writing the
> > registers
> > for those pins will cause access control issues. Add support for a DT
> > property to describe the set of GPIOs that are available for use so
> > that
> > higher level OSes are able to know what pins to avoid reading/writing.
> > Non-DT platforms can add support by directly updating the
> > chip->valid_mask.
> 
> > Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> > Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
> 
> Hmm...

Don't look closely! :P

> 
> > +     gpiochip->valid_mask = kcalloc(BITS_TO_LONGS(gpiochip-
> > >ngpio),
> > +                                    sizeof(long), GFP_KERNEL);
> 
> Just noticed that kcalloc is superfluous here.
> kmalloc_array() would be enough.
> 

Ok. I was copying the irqchip style. Should I fold them together into a
helper function and also update to kmalloc_array?