On Fri, 4 Oct 2002, David S. Miller wrote:
>
> Another theory is that some device just dislikes being given
> a 0 in one of it's base registers, but somehow ~0 is ok :-)
I think that is the real issue. We're mapping something - probably a host
bridge - at address 0, and then accessing RAM (which is also is mapped at
PCI address 0) and the host bridge is unhappy.
So excluding the change is probably the right thing to do - it's just
fundamentally buggy to blindly put a base register at zero.
Linus
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