[PATCH 4.12 16/27] powerpc/powernv: Fix CPU_HOTPLUG=n idle.c compile error

[Greg Kroah-Hartman]

4.12-stable review patch.  If anyone has any objections, please let me know.

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

From: Nicholas Piggin <npiggin@xxxxxxxxx>

commit 67d20418088680d22037119d914982cd982b5c5a upstream.

Fixes: a7cd88da97 ("powerpc/powernv: Move CPU-Offline idle state invocation from smp.c to idle.c")
Cc: Gautham R. Shenoy <ego@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
Acked-by: Gautham R. Shenoy <ego@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/powerpc/platforms/powernv/idle.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -261,6 +261,7 @@ static u64 pnv_deepest_stop_psscr_val;
 static u64 pnv_deepest_stop_psscr_mask;
 static bool deepest_stop_found;
 
+#ifdef CONFIG_HOTPLUG_CPU
 /*
  * pnv_cpu_offline: A function that puts the CPU into the deepest
  * available platform idle state on a CPU-Offline.
@@ -293,6 +294,7 @@ unsigned long pnv_cpu_offline(unsigned i
 
 	return srr1;
 }
+#endif
 
 /*
  * Power ISA 3.0 idle initialization.