X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?p=kvmfornfv.git;a=blobdiff_plain;f=kernel%2Fdrivers%2Facpi%2Fpci_link.c;h=b09ad554430acaf0052c3f960cb212b96582e804;hp=cfd7581cc19fa24c37d1a3fb7cb370e33a63c760;hb=ec0a2ed6d8a5e555edef907895c041e285fdb495;hpb=342fa5dfa053559f47caad657132522496dcf1b3

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
@@ -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