[U-Boot] [PATCH v8 2/4] gpio: Replace ARM gpio.h with the common API in include/asm-generic

[Stephen Warren]

Mike Frysinger wrote at Monday, November 07, 2011 10:40 AM:
> * PGP Signed by an unknown key
> 
> On Monday 07 November 2011 11:35:33 Stephen Warren wrote:
> > Joe Hershberger wrote at Friday, November 04, 2011 8:25 PM:
> > > -void gpio_free(int gp)
> > > +int gpio_free(unsigned gpio)
> > >  {
> > > +	return 0;
> > >  }
> >
> > If you're doing a cleanup pass on this driver, you may as well make
> > gpio_free() do something; it should probably clear gpio_names[gpio].name
> > and perhaps set the pin back to SFIO - in other words, undo gpio_reqeust().
> 
> i think the decision made in Linux was that freeing a GPIO should not cause it
> to change tristate or anything.  all it should do is mark it as "available" so
> something else can request it.
> -mike

OK, I'll buy that, but presumably gpio_names[gpio].name should still be cleared
to indicate the pin is free?

-- 
nvpublic