From: Ingo Molnar <mingo@elte.hu>

 In file included from include/asm/fixmap.h:27,
                  from arch/i386/mach-generic/bigsmp.c:12:
 include/asm/acpi.h: In function '__acpi_acquire_global_lock':
 include/asm/acpi.h:70: warning: implicit declaration of function 'cpu_relax'

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 include/asm-i386/acpi.h |    1 +
 1 file changed, 1 insertion(+)

diff -puN include/asm-i386/acpi.h~cpu_relax-use-in-acpi-lock-fix include/asm-i386/acpi.h
--- a/include/asm-i386/acpi.h~cpu_relax-use-in-acpi-lock-fix
+++ a/include/asm-i386/acpi.h
@@ -31,6 +31,7 @@
 #include <acpi/pdc_intel.h>
 
 #include <asm/system.h>		/* defines cmpxchg */
+#include <asm/processor.h>	/* cpu_relax() */
 
 #define COMPILER_DEPENDENT_INT64   long long
 #define COMPILER_DEPENDENT_UINT64  unsigned long long
_