Re: [PATCH] iomap: make PCI iomap stuff excluded when PCI isn't configured

[Al Viro]

On Sun, Feb 11, 2007 at 05:45:33PM +0100, Martin Schwidefsky wrote:
> On Sat, 2007-02-10 at 23:55 +0000, Al Viro wrote: 
> > FWIW, the current picture wrt io-related stuff looks so:
> > 
> > s390: no ioport_map, no ioread*/iowrite*, no port IO except for (in|out)b(_p|)
> 
> s390 does not even need (in|out)b(_p|). I wondered what else from io.h
> do we not need. The answer is: almost nothing. With the devres patch
> from Al and the dma-mapping patch from Heiko we can get rid of iomem and
> all associated definitions.

Then we'll just need to replace NO_IOPORT with NO_IOMEM in Kconfig and
kill arch/s390/mm/ioremap.c.

BTW, there's an annoying bit of junk in there - IO_SPACE_LIMIT.  We
only need it for /proc/ioports, which AFAICS shouldn't even be there
on s390 (or uml).  OTOH, removing that thing would mean a user-visible
change - we go from "empty file in /proc" to "no such file in /proc"...

Anyway, switch to NO_IOMEM follows (on top of patches mentioned above).