mips/octeon/smp: Convert to hotplug state machine

Install the callbacks via the state machine.

[ tglx: Renamed the state to MIPS_SOC_PREPARE so it can be reused by other
  	SOCs ]

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-16-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 21 deletions

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 4d457d602d3b..256fe6f65cf2 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -380,29 +380,11 @@ static int octeon_update_boot_vector(unsigned int cpu)
 	return 0;
 }
 
-static int octeon_cpu_callback(struct notifier_block *nfb,
-	unsigned long action, void *hcpu)
-{
-	unsigned int cpu = (unsigned long)hcpu;
-
-	switch (action & ~CPU_TASKS_FROZEN) {
-	case CPU_UP_PREPARE:
-		octeon_update_boot_vector(cpu);
-		break;
-	case CPU_ONLINE:
-		pr_info("Cpu %d online\n", cpu);
-		break;
-	case CPU_DEAD:
-		break;
-	}
-
-	return NOTIFY_OK;
-}
-
 static int register_cavium_notifier(void)
 {
-	hotcpu_notifier(octeon_cpu_callback, 0);
-	return 0;
+	return cpuhp_setup_state_nocalls(CPUHP_MIPS_SOC_PREPARE,
+					 "mips/cavium:prepare",
+					 octeon_update_boot_vector, NULL);
 }
 late_initcall(register_cavium_notifier);