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authorJan Beulich <JBeulich@novell.com>2011-02-23 05:08:10 -0500
committerJesse Barnes <jbarnes@virtuousgeek.org>2011-05-21 12:00:35 -0400
commita3170c1f924ce2565c4e160b9b095e65c03b2dc6 (patch)
tree70a3bd84066921f0c1c454f205f6031fa5f97a72 /arch/x86
parent51c2e0a7e5bc7ed1384cc68cfb95e702571500c9 (diff)
x86/PCI: derive pcibios_last_bus from ACPI MCFG
On various newer Intel systems the PCI bus(ses) the non-core devices live on aren't getting announced by ACPI except through the bus range covered by mmconfig. At least the i7core-edac driver depends on these devices getting detected. Mauro, could you check whether with this change the Xeon 55xx hack in that driver can go away altogether, and with it the bogus exporting of pcibios_scan_specific_bus()? Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Aristeu Sergio <arozansk@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/pci/mmconfig-shared.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index e282886616a0..750c346ef50a 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -606,6 +606,16 @@ static void __init __pci_mmcfg_init(int early)
606 if (list_empty(&pci_mmcfg_list)) 606 if (list_empty(&pci_mmcfg_list))
607 return; 607 return;
608 608
609 if (pcibios_last_bus < 0) {
610 const struct pci_mmcfg_region *cfg;
611
612 list_for_each_entry(cfg, &pci_mmcfg_list, list) {
613 if (cfg->segment)
614 break;
615 pcibios_last_bus = cfg->end_bus;
616 }
617 }
618
609 if (pci_mmcfg_arch_init()) 619 if (pci_mmcfg_arch_init())
610 pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF; 620 pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
611 else { 621 else {