[PATCH 147/173] powerpc/kexec: Add ifdef CONFIG_PPC_STD_MMU_64 to PPC64 code

[Willy Tarreau]

2.6.27.59-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Kamalesh Babulal <kamalesh@xxxxxxxxxxxxxxxxxx>

powerpc/kexec: Add ifdef CONFIG_PPC_STD_MMU_64 to PPC64 code

This patch introduces PPC64 specific #ifdef bits from the upstream
commit: b3df895aebe091b1657a42a8c859bd49fc96646b.

Reported-and-tested-by: dann frazier <dannf@xxxxxxxxx>
Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Kamalesh Babulal <kamalesh@xxxxxxxxxxxxxxxxxx>
cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
cc: Anton Blanchard <anton@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/powerpc/kernel/crash.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -163,6 +163,7 @@ static void crash_kexec_prepare_cpus(int
 }
 
 /* wait for all the CPUs to hit real mode but timeout if they don't come in */
+#ifdef CONFIG_PPC_STD_MMU_64
 static void crash_kexec_wait_realmode(int cpu)
 {
 	unsigned int msecs;
@@ -187,6 +188,7 @@ static void crash_kexec_wait_realmode(in
 	}
 	mb();
 }
+#endif
 
 /*
  * This function will be called by secondary cpus or by kexec cpu
@@ -445,7 +447,9 @@ void default_machine_crash_shutdown(stru
 	crash_kexec_prepare_cpus(crashing_cpu);
 	cpu_set(crashing_cpu, cpus_in_crash);
 	crash_kexec_stop_spus();
+#ifdef CONFIG_PPC_STD_MMU_64
 	crash_kexec_wait_realmode(crashing_cpu);
+#endif
 	if (ppc_md.kexec_cpu_down)
 		ppc_md.kexec_cpu_down(1, 0);
 }


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