Re: [PATCH v2 1/5] ARM: SAMSUNG: Add keypad device support

[Ben Dooks <ben-linux@fluff.org>]

On Sun, May 30, 2010 at 02:04:39PM +0900, Jassi Brar wrote:
> On Sun, May 30, 2010 at 1:51 PM, Ben Dooks <ben-linux@fluff.org> wrote:
> > On Sun, May 30, 2010 at 01:46:03PM +0900, Jassi Brar wrote:
> >> On Sun, May 30, 2010 at 12:42 PM, Marek Vasut <marek.vasut@gmail.com> wrote:
> >> > Dne Ne 30. kv??tna 2010 05:06:20 Joonyoung Shim napsal(a):
> >> >> +struct samsung_kp_platdata {
> >> >> +     const struct matrix_keymap_data *keymap_data;
> >> >> +     unsigned int            rows;
> >> >> +     unsigned int            cols;
> >> >> +     unsigned int            rep;
> >> >
> >> > I don't know, maybe using uint32_t here? On ARM, it doesn't matter so far as int
> >> > will be always 32bit, but maybe we should just type the variables well ?
> >>
> >> I thought int was 32bits on all archs
> >
> > No, the C standard doesn't make any guarantees about the size of types,
> > it is up to the implementation of the compiler. If I rember correctly
> > the only guarantee in the lanugage definition is that char->short->int->long
> > be that the next up the line be at-least as a  big as the one before.
> I believe on most implementations, if not all, sizeof char, short and
> int are resp
> 1, 2 and 4 bytes. whereas long denotes the native capacity of the arch.

Mostly, but that is up to the compiler/arch combination, not defined by
the main C standard. It may be defned by the arch C standard.
 
-- 
Ben

Q:      What's a light-year?
A:      One-third less calories than a regular year.