Re: Patch of a new driver for kernel 2.4.x that need review

[Dmitry Torokhov]

Hi Pekka,

Pekka J Enberg <penberg@xxxxxxxxxxxxxx> wrote:
> Hi Dmitry, 
> 
> Mark Gross writes:
> > > > +
> > > > +/* 0 = Dynamic allocation of the major device number */
> > > > +#define TLCLK_MAJOR 252
> 
> Pekka J Enberg <penberg@xxxxxxxxxxxxxx> wrote:
> > > Enums, please. 
> > > 
> 
> Dmitry Torokhov writes:
> > But not here - it is a single constant, not a value of a distinct type.
> 
> Fair enough, "static const int" would work here too. Defines should be 
> avoided because they allow you to override a value without ever noticing it.
> 

Would not this cause compiler to allocate memory for the constant?
I suppose if GCC is really good it could eliminate allocation since
nothing takes its address, but I am not sure.

With #define you can be sure that it is just a constant expression.

-- 
Dmitry
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