[PATCHv2 1/3] Input: twl4030-keypad - add device tree support

[Sebastian Reichel]

On Sun, Oct 27, 2013 at 05:23:48AM -0700, Tony Lindgren wrote:
> * Pavel Machek <pavel at ucw.cz> [131027 04:48]:
> > > > > +#if IS_ENABLED(CONFIG_OF)
> > > > I'm probably missing something here, but why not #ifdef CONFIG_OF?
> > > 
> > > I have been told for other drivers, that IS_ENABLED() is
> > > the prefered way to check for configuration these days.
> > 
> > CONFIG_OF can not be module, using IS_ENABLED() on it is just wrong.
> 
> Good point. Looks like there's IS_BUILTIN that's for boolean options.

Using IS_ENABLED for boolean options is supposed to be supported
according to the comment above IS_BUILTIN:

/*
 * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
 * otherwise. For boolean options, this is equivalent to
 * IS_ENABLED(CONFIG_FOO).
 */
#define IS_BUILTIN(option) config_enabled(option)

-- Sebastian
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