Re: [PATCH] powerpc/smp: Do not disable IPI interrupts during suspend
From: Kumar Gala <hidden>
Date: 2012-07-27 21:58:46
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On Jul 20, 2012, at 7:47 AM, Zhao Chenhui wrote:
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. =20 Signed-off-by: Zhao Chenhui <redacted> Signed-off-by: Li Yang <redacted> --- arch/powerpc/kernel/smp.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
BenH, Can you ack? - k
quoted hunk ↗ jump to hunk
=20diff --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 =3D 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); --=20 1.6.4.1 =20