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Message-Id: <1337580008-7280-8-git-send-email-yong.zhang0@gmail.com> Date: Mon, 21 May 2012 14:00:07 +0800 From: Yong Zhang <yong.zhang0@...il.com> To: linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org Cc: ralf@...ux-mips.org, sshtylyov@...sta.com, david.daney@...ium.com Subject: [PATCH 7/8] MIPS: smp: Warn on too early irq enable From: Yong Zhang <yong.zhang@...driver.com> Just to catch a potential issue. Signed-off-by: Yong Zhang <yong.zhang0@...il.com> Acked-by: David Daney <david.daney@...ium.com> --- arch/mips/kernel/smp.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 042145f..4fbafa8 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -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(); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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