ARM: shmobile: Introduce shmobile_smp_cpu_disable()

Introduce the shared CPU Hotplug function shmobile_smp_cpu_disable()
for mach-shmobile. It is useful for the case when all CPUs may be
hotplugged, including CPU 0.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
index d4ae616bcedb..3741562156ed 100644
--- a/arch/arm/mach-shmobile/platsmp.c
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -44,3 +44,10 @@ void shmobile_smp_hook(unsigned int cpu, unsigned long fn, unsigned long arg)
         shmobile_smp_arg[cpu] = arg;
         flush_cache_all();
 }
+
+#ifdef CONFIG_HOTPLUG_CPU
+int shmobile_smp_cpu_disable(unsigned int cpu)
+{
+        return 0; /* Hotplug of any CPU is supported */
+}
+#endif