On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: > > +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); > > +int sunxi_gpio_get_cfgpin(u32 pin); > > +int sunxi_gpio_set_drv(u32 pin, u32 val); > > +int sunxi_gpio_set_pull(u32 pin, u32 val); > > +int name_to_gpio(const char *name); > > +#define name_to_gpio name_to_gpio > > What is this ugly define doing here ?
common/cmd_gpio.c uses the #ifndef name_to_gpio pattern to provide (or not) a default fallback implementation. I think this is a reasonably (but not very) common idiom for such cases where the non-default variant is not best expressed as a macro. Ian. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
