diff options
| -rw-r--r-- | arch/x86/kernel/acpi/boot.c | 1 | ||||
| -rw-r--r-- | drivers/acpi/pci_link.c | 16 | ||||
| -rw-r--r-- | include/linux/acpi.h | 2 |
3 files changed, 18 insertions, 1 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index e49ee24da85e..9393896717d0 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -445,6 +445,7 @@ static void __init acpi_sci_ioapic_setup(u8 bus_irq, u16 polarity, u16 trigger, polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; mp_override_legacy_irq(bus_irq, polarity, trigger, gsi); + acpi_penalize_sci_irq(bus_irq, trigger, polarity); /* * stash over-ride to indicate we've been here diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index cfd7581cc19f..b09ad554430a 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -826,6 +826,22 @@ void acpi_penalize_isa_irq(int irq, int active) } /* + * Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict with + * PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be use for + * PCI IRQs. + */ +void acpi_penalize_sci_irq(int irq, int trigger, int polarity) +{ + if (irq >= 0 && irq < ARRAY_SIZE(acpi_irq_penalty)) { + if (trigger != ACPI_MADT_TRIGGER_LEVEL || + polarity != ACPI_MADT_POLARITY_ACTIVE_LOW) + acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_ALWAYS; + else + acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING; + } +} + +/* * Over-ride default table to reserve additional IRQs for use by ISA * e.g. acpi_irq_isa=5 * Useful for telling ACPI how not to interfere with your ISA sound card. diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d2445fa9999f..0b2394f61af4 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -221,7 +221,7 @@ struct pci_dev; int acpi_pci_irq_enable (struct pci_dev *dev); void acpi_penalize_isa_irq(int irq, int active); - +void acpi_penalize_sci_irq(int irq, int trigger, int polarity); void acpi_pci_irq_disable (struct pci_dev *dev); extern int ec_read(u8 addr, u8 *val); |