Re: IO.H changes

[Paul M. <le...@li...>]

On Sun, Oct 07, 2007 at 12:46:48AM -0700, Kristoffer Ericson wrote:
> Since I've been debugging the pcmcia driver, I thought of something
> andriy said 1-2 years ago when pcmcia was buggy.  In order for 2.6.17
> to have working pcmcia we needed to add this patch below.
> 
It was probably necessary because it forced all of the MMIO accesses to
the PIO address trapping/fixup that the old hd64461 I/O routines did. The
proper way to fix this is to get the port mapping right in the driver
itself and just stick with regular MMIO accesses. There's no reason why
this _requires_ non-MMIO, so it's purely a convenience thing.

If this actually fixes PCMCIA for you today, then it bears a closer
looking at, but at a quick glance I don't see it having any impact these
days.