ppc: make PPC_BOOK3S_64 select IRQ_WORK

Fix breakage which will be exposed by the patch "kconfig: make allnoconfig
disable options behind EMBEDDED and EXPERT".

arch/powerpc/kernel/mce.c, compiled in for PPC_BOOK3S_64, calls
functions only built when IRQ_WORK, so select it.  Fixes the following
build error:

  arch/powerpc/kernel/built-in.o: In function `.machine_check_queue_event':
  (.text+0x11260): undefined reference to `.irq_work_queue'

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 434fda39bf8b51f219098f207ce9cf35760fd484..d9e2b19b7c8deb16b344670c50174032d494176d 100644 (file)
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -73,6 +73,7 @@ config PPC_BOOK3S_64
        select SYS_SUPPORTS_HUGETLBFS
        select HAVE_ARCH_TRANSPARENT_HUGEPAGE if PPC_64K_PAGES
        select ARCH_SUPPORTS_NUMA_BALANCING
+       select IRQ_WORK
 
 config PPC_BOOK3E_64
        bool "Embedded processors"