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Date: Tue, 15 Jan 2013 18:31:00 +0800 From: Tiejun Chen <tiejun.chen@...driver.com> To: <benh@...nel.crashing.org>, <galak@...nel.crashing.org> CC: <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org> Subject: [RFC][v0][PATCH 1/1] ppc64: ignore interrupts while offline With lazy interrupt, some implementations of hotplug will get some interrupts even while offline, just ignore these. Signed-off-by: Tiejun Chen <tiejun.chen@...driver.com> --- arch/powerpc/kernel/irq.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 4f97fe3..dbca574 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -144,6 +144,12 @@ notrace unsigned int __check_irq_replay(void) */ unsigned char happened = local_paca->irq_happened; + /* Some implementations of hotplug will get some interrupts while + * offline, just ignore these. + */ + if (cpu_is_offline(smp_processor_id())) + return 0; + /* Clear bit 0 which we wouldn't clear otherwise */ local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS; -- 1.7.9.5 -- 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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