[POWERPC] Allow smp_call_function_single() to current cpu

This removes the requirement for callers to get_cpu() to check in simple
cases.  i386 and x86_64 already received a similar treatment.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index d577b71db375..087c92f2a3eb 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -284,7 +284,7 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int
                         int wait)
 {
         cpumask_t map = CPU_MASK_NONE;
-        int ret = -EBUSY;
+        int ret = 0;
 
         if (!cpu_online(cpu))
                 return -EINVAL;
@@ -292,6 +292,11 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int
         cpu_set(cpu, map);
         if (cpu != get_cpu())
                 ret = smp_call_function_map(func,info,nonatomic,wait,map);
+        else {
+                local_irq_disable();
+                func(info);
+                local_irq_enable();
+        }
         put_cpu();
         return ret;
 }