Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH 4/5] x86 / PM: Set IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects | Date | Tue, 05 Aug 2014 17:27:07 +0200 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Set the IRQCHIP_SKIP_SET_WAKE for IOAPIC IRQ chip objects so that interrupts from them can work as wakeup interrupts for suspend-to-idle.
After this change, running enable_irq_wake() on one of the IRQs in question will succeed and IRQD_WAKEUP_STATE will be set for it, so all of the suspend-to-idle wakeup mechanics introduced previously will work for it automatically.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- arch/x86/kernel/apic/io_apic.c | 5 +++++ 1 file changed, 5 insertions(+)
Index: linux-pm/arch/x86/kernel/apic/io_apic.c =================================================================== --- linux-pm.orig/arch/x86/kernel/apic/io_apic.c +++ linux-pm/arch/x86/kernel/apic/io_apic.c @@ -2507,6 +2507,7 @@ static struct irq_chip ioapic_chip __rea .irq_eoi = ack_apic_level, .irq_set_affinity = native_ioapic_set_affinity, .irq_retrigger = ioapic_retrigger_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, }; static inline void init_IO_APIC_traps(void) @@ -3030,6 +3031,7 @@ static struct irq_chip msi_chip = { .irq_ack = ack_apic_edge, .irq_set_affinity = msi_set_affinity, .irq_retrigger = ioapic_retrigger_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, }; int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, @@ -3128,6 +3130,7 @@ static struct irq_chip dmar_msi_type = { .irq_ack = ack_apic_edge, .irq_set_affinity = dmar_msi_set_affinity, .irq_retrigger = ioapic_retrigger_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, }; int arch_setup_dmar_msi(unsigned int irq) @@ -3178,6 +3181,7 @@ static struct irq_chip hpet_msi_type = { .irq_ack = ack_apic_edge, .irq_set_affinity = hpet_msi_set_affinity, .irq_retrigger = ioapic_retrigger_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, }; int default_setup_hpet_msi(unsigned int irq, unsigned int id) @@ -3241,6 +3245,7 @@ static struct irq_chip ht_irq_chip = { .irq_ack = ack_apic_edge, .irq_set_affinity = ht_set_affinity, .irq_retrigger = ioapic_retrigger_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, }; int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
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