[IA64] Fix undefined reference to can_cpei_retarget for simulator

The simulator build doesn't turn on ACPI, so doesn't have a definition
of can_cpei_retarget.

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index d8030f3bd865..92ff46ad21e2 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -36,12 +36,14 @@ int arch_register_cpu(int num)
         parent = &sysfs_nodes[cpu_to_node(num)];
 #endif /* CONFIG_NUMA */
 
+#ifdef CONFIG_ACPI_BOOT
         /*
          * If CPEI cannot be re-targetted, and this is
          * CPEI target, then dont create the control file
          */
         if (!can_cpei_retarget() && is_cpu_cpei_target(num))
                 sysfs_cpus[num].cpu.no_control = 1;
+#endif
 
         return register_cpu(&sysfs_cpus[num].cpu, num, parent);
 }