diff options
Diffstat (limited to 'kernel/drivers/acpi/pci_link.c')
| -rw-r--r-- | kernel/drivers/acpi/pci_link.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/drivers/acpi/pci_link.c b/kernel/drivers/acpi/pci_link.c index cfd7581cc..b09ad5544 100644 --- a/kernel/drivers/acpi/pci_link.c +++ b/kernel/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. |