powerpc/pseries: Use rtas_call_unlocked() in pseries hotplug

Avoid open coding the logic by using rtas_call_unlocked().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 6247544..86d2eca 100644 (file)
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -88,13 +88,7 @@ void set_default_offline_state(int cpu)
 
 static void rtas_stop_self(void)
 {
-       static struct rtas_args args = {
-               .nargs = 0,
-               .nret = cpu_to_be32(1),
-               .rets = &args.args[0],
-       };
-
-       args.token = cpu_to_be32(rtas_stop_self_token);
+       static struct rtas_args args;
 
        local_irq_disable();
 
@@ -102,7 +96,8 @@ static void rtas_stop_self(void)
 
        printk("cpu %u (hwid %u) Ready to die...\n",
               smp_processor_id(), hard_smp_processor_id());
-       enter_rtas(__pa(&args));
+
+       rtas_call_unlocked(&args, rtas_stop_self_token, 0, 1, NULL);
 
        panic("Alas, I survived.\n");
 }