Re: [PATCH 1/7] debugobjects: make fixup functions return bool instead of int

[Thomas Gleixner]

On Fri, 22 Apr 2016, changbin.du@xxxxxxxxx wrote:
> From: "Du, Changbin" <changbin.du@xxxxxxxxx>
> 
> The object debugging infrastructure core provides some fixup callbacks
> for the subsystem who use it. These callbacks are called from the debug
> code whenever a problem in debug_object_init is detected. And
> debugobjects core suppose them returns 1 when the fixup was successful,
> otherwise 0. So the return type is boolean.
> 
> A bad thing is that debug_object_fixup use the return value for
> arithmetic operation. It confused me that what is the reall return

What's bad about that? The fact that it's used for arithmethic operation or
that it confused you?

> Reading over the whole code, I found some place do use the return value
> incorrectly(see next patch). So why use bool type instead?

Patches which fix a problem need to come first not in the middle of a revamp
series.
 
> +	bool (*fixup_init)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_activate)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_destroy)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_free)(void *addr, enum debug_obj_state state);
> +	bool (*fixup_assert_init)(void *addr, enum debug_obj_state state);

So this change will introduce a gazillion of compile warnings because the
callbacks in the various usage sites are still having 'int' return type.

Thanks,

	tglx