wt., 14 kwi 2020 o 12:07 Michael Walle <michael@xxxxxxxx> napisał(a): > >> > >> So the best from a user perspective I've could come up with was: > >> > >> ->base_reg = GPIO_REGMAP_ADDR(addr); > >> > >> I'm open for suggestions. > >> > > > > Maybe setting the pointer to ERR_PTR(-ENOENT) which will result in > > IS_ERR() returning true? > > Unfortunatly, its not a pointer, but only a regular unsigned int (ie > the type the regmap API has for its "reg" property). It could be a > pointer of course but then the user would have to allocate additional > memory. > > -michael > Eek, of course it's not a pointer. If possible I'd like to avoid this GPIO_REGMAP_ADDR() macro, so how about having some separate field for invalid offsets making every offset 'valid' by default? Linus: do you have a better idea? Bart
