Re: [tip:x86/headers] x86: truncate ISA addresses to unsigned int

[H. Peter Anvin]

James Bottomley wrote:
> > +static inline unsigned int isa_virt_to_bus(volatile void *address)
>
> The rest looks fine, but why is the address volatile?  The macro below
> never actually dereferences it.

Because a volatile is permitted.  virt_to_phys() takes a volatile 
pointer for that reason.

	-hpa
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