Re: __bad_udelay in 2.2.18pre15

From: Horst von Brand (vonbrand@sleipnir.valparaiso.cl)
Date: Tue Oct 10 2000 - 19:34:19 EST

Marcelo Tosatti <marcelo@conectiva.com.br> said:
> 2.2.18pre15 defines udelay as (in file include/asm-i386/delay.h) :
>
> ...
>
> extern void __bad_udelay(void);
>
> ...
>
> #define udelay(n) (__builtin_constant_p(n) ? \
> ((n) > 20000 ? __bad_udelay() : __const_udelay((n) *
> 0x10c6ul)) : \
> __udelay(n))
>
> ...
>
>
> It seems __bad_udelay is not defined anywhere in the kernel source.

That is precisely the idea: Flag the places where udelay() is called with a
large constant value. Just won't find out uses with large _variable_
arguments, but it is a start. Netted one in PCMCIA-CS... 

-- 
Horst von Brand                             vonbrand@sleipnir.valparaiso.cl
Casilla 9G, Vin~a del Mar, Chile                               +56 32 672616

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