2 #include <linux/acpi.h>
3 #include <linux/init.h>
5 #include <asm/hw_irq.h>
8 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
11 printk(KERN_WARNING "PCI: Multiple domains not supported\n");
15 return pcibios_scan_root(busnum);
18 extern int pci_routeirq;
19 static int __init pci_acpi_init(void)
21 struct pci_dev *dev = NULL;
29 printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
30 acpi_irq_penalty_init();
32 pcibios_enable_irq = acpi_pci_irq_enable;
33 pcibios_disable_irq = acpi_pci_irq_disable;
37 * PCI IRQ routing is set up by pci_enable_device(), but we
38 * also do it here in case there are still broken drivers that
39 * don't use pci_enable_device().
41 printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
42 while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL)
43 acpi_pci_irq_enable(dev);
45 printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n");
47 #ifdef CONFIG_X86_IO_APIC
54 subsys_initcall(pci_acpi_init);