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MIPS: smp: Warn on too early irq enable

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Just to catch a potential issue.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3852/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Yong Zhang 2012-07-19 09:13:53 +02:00 committed by Ralf Baechle
parent b9a09a0660
commit b789ad63ac
1 changed files with 5 additions and 0 deletions
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5
arch/mips/kernel/smp.c
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@ -130,6 +130,11 @@ asmlinkage __cpuinit void start_secondary(void)
synchronise_count_slave();
/*
* irq will be enabled in ->smp_finish(), enabling it too early
* is dangerous.
*/
WARN_ON_ONCE(!irqs_disabled());
mp_ops->smp_finish();
cpu_idle();