On Thu, 31 Jan 2008, David Brownell wrote: > > > > > +#ifndef NO_GPIO > > > > > +#define NO_GPIO ((unsigned int)-1) > > > > > +#endif > > > > > + > > > > > > > > I don't understand this. > > > > > > Me either; *ANY* negative number is invalid as a GPIO number, > > > not just "-1"... > > > > Ok, this one should rather go into a separate patch. I'd like to have such > > a macro to check whether the platform is using a GPIO with this specific > > camera or not. Similar to NO_IRQ. > > Then maybe there should be an is_valid_gpio() predicate. > Anything not between 0..MAX_INT would fail. And there > should be a Documentation/gpio.txt update to match.
hm, but if you deliberately want an invalid gpio number? Thanks Guennadi --- Guennadi Liakhovetski _______________________________________________ i2c mailing list [email protected] http://lists.lm-sensors.org/mailman/listinfo/i2c
