[PATCH] pio: add arch specific gpio_is_valid() function
alan at lxorguk.ukuu.org.uk
Tue Sep 7 20:11:12 EDT 2010
On Tue, 7 Sep 2010 16:44:55 -0700 (PDT)
David Brownell <david-b at pacbell.net> wrote:
> --- On Tue, 9/7/10, Alan Cox <alan at lxorguk.ukuu.org.uk> wrote:
> > >
> > > device->output_pin = -EINVAL;
> > gpio numbers are unsigned in the rest of the API
> Minor goof; should have been "int" everywhere,
> as implied by the references to negative numbers
> in the docs... negatives not used internally, but
> preserved for external use (as above).
Ok I need to patch a couple of the intel drivers to use -1 then.
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