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path: root/drivers/acpi/pci_link.c
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Diffstat (limited to 'drivers/acpi/pci_link.c')
-rw-r--r--drivers/acpi/pci_link.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index fcfdef7b4fdd..e52ad91ce2dc 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -531,7 +531,7 @@ int __init acpi_irq_penalty_init(void)
return 0;
}
-static int acpi_irq_balance; /* 0: static, 1: balance */
+static int acpi_irq_balance = -1; /* 0: static, 1: balance */
static int acpi_pci_link_allocate(struct acpi_pci_link *link)
{
@@ -950,10 +950,17 @@ device_initcall(irqrouter_init_sysfs);
static int __init acpi_pci_link_init(void)
{
-
if (acpi_noirq)
return 0;
+ if (acpi_irq_balance == -1) {
+ /* no command line switch: enable balancing in IOAPIC mode */
+ if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
+ acpi_irq_balance = 1;
+ else
+ acpi_irq_balance = 0;
+ }
+
acpi_link.count = 0;
INIT_LIST_HEAD(&acpi_link.entries);
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