Geert Uytterhoeven wrote:

  While compiling drivers/char/ipmi/ipmi_si_intf.c in 2.6.6-rc1 on m68k,
  I noticed a missing include (needed for disable_irq_nosync() and
  enable_irq()):

  Furthermore none of CONFIG_ACPI_INTERPETER, CONFIG_X86, and CONFIG_PCI
  were set, and thus IPMI_MEM_ADDR_SPACE and IPMI_IO_ADDR_SPACE are not
  defined, but they are used.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>