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authorThomas Gleixner <tglx@linutronix.de>2009-08-29 16:24:51 +0200
committerH. Peter Anvin <hpa@zytor.com>2010-02-19 16:12:29 -0800
commitb72d0db9dd41da1f2ec6274b03e8909583c64e41 (patch)
tree6424768067546f3aa4bd2e5d0a11d6459a6aad51 /arch/x86/pci/acpi.c
parentcf4c43dd439b90a1a876b3f836ebe745abb9a269 (diff)
x86: Move pci init function to x86_init
The PCI initialization in pci_subsys_init() is a mess. pci_numaq_init, pci_acpi_init, pci_visws_init and pci_legacy_init are called and each implementation checks and eventually modifies the global variable pcibios_scanned. x86_init functions allow us to do this more elegant. The pci.init function pointer is preset to pci_legacy_init. numaq, acpi and visws can modify the pointer in their early setup functions. The functions return 0 when they did the full initialization including bus scan. A non zero return value indicates that pci_legacy_init needs to be called either because the selected function failed or wants the generic bus scan in pci_legacy_init to happen (e.g. visws). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80CFE@orsmsx508.amr.corp.intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/pci/acpi.c')
-rw-r--r--arch/x86/pci/acpi.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 959e548a703..73b3fe9aa71 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -282,15 +282,11 @@ int __init pci_acpi_init(void)
{
struct pci_dev *dev = NULL;
- if (pcibios_scanned)
- return 0;
-
if (acpi_noirq)
- return 0;
+ return -ENODEV;
printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
acpi_irq_penalty_init();
- pcibios_scanned++;
pcibios_enable_irq = acpi_pci_irq_enable;
pcibios_disable_irq = acpi_pci_irq_disable;