sparc64: Fix smp_callin() locking.



Interrupts must be disabled when taking the IPI lock.

Caught by lockdep.

Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 0882e8dd

arch/sparc/kernel/smp_64.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -118,9 +118,9 @@ void __cpuinit smp_callin(void)
		while (!cpu_isset(cpuid, smp_commenced_mask))
		rmb();

		ipi_call_lock();
		ipi_call_lock_irq();
		cpu_set(cpuid, cpu_online_map);
		ipi_call_unlock();
		ipi_call_unlock_irq();

		/* idle thread is expected to have preempt disabled */
		preempt_disable();