Messages in this thread Patch in this message | | | From | Zhao Chenhui <> | Subject | [PATCH] powerpc/smp: Do not disable IPI interrupts during suspend | Date | Fri, 20 Jul 2012 20:47:01 +0800 |
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During suspend, all interrupts including IPI will be disabled. In this case, the suspend process will hang in SMP. To prevent this, pass the flag IRQF_NO_SUSPEND when requesting IPI irq.
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> --- arch/powerpc/kernel/smp.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index fecb038..d26bbf8 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -171,7 +171,7 @@ int smp_request_message_ipi(int virq, int msg) } #endif err = request_irq(virq, smp_ipi_action[msg], - IRQF_PERCPU | IRQF_NO_THREAD, + IRQF_PERCPU | IRQF_NO_THREAD | IRQF_NO_SUSPEND, smp_ipi_name[msg], 0); WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n", virq, smp_ipi_name[msg], err); -- 1.6.4.1
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