• Al Viro's avatar
    [PATCH] Switch s390 to NO_IOMEM · 23db764d
    Al Viro authored
    Martin Schwidefsky wrote:
      "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."
    So 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"...
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
io.h 1.15 KB