From a700f2d8e79ff80041078f160fe1edccf89b0c66 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Wed, 23 Sep 2015 12:33:14 -0300 Subject: Linux-libre 4.2.1-gnu --- drivers/acpi/pci_link.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers/acpi/pci_link.c') diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index cfd7581cc..b09ad5544 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -825,6 +825,22 @@ 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 -- cgit v1.2.3