From 7920c4d658ff2b0f7b8acf3bd7c700875c2bc163 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Sat, 18 Oct 2008 13:23:10 +0100 Subject: [PATCH] MIPS: SMP: Don't reenable interrupts in stop_this_cpu; use WAIT instruction. Noticed by Anirban Sinha ; patch by me. Signed-off-by: Ralf Baechle --- arch/mips/kernel/smp.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 7b59cfb7e60..b79ea7055ec 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -163,8 +163,10 @@ static void stop_this_cpu(void *dummy) * Remove this CPU: */ cpu_clear(smp_processor_id(), cpu_online_map); - local_irq_enable(); /* May need to service _machine_restart IPI */ - for (;;); /* Wait if available. */ + for (;;) { + if (cpu_wait) + (*cpu_wait)(); /* Wait if available. */ + } } void smp_send_stop(void) -- 2.41.1