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authorJan Beulich <JBeulich@novell.com>2011-02-23 13:08:10 +0300
committerJesse Barnes <jbarnes@virtuousgeek.org>2011-05-21 20:00:35 +0400
commita3170c1f924ce2565c4e160b9b095e65c03b2dc6 (patch)
tree70a3bd84066921f0c1c454f205f6031fa5f97a72 /arch/x86/pci
parent51c2e0a7e5bc7ed1384cc68cfb95e702571500c9 (diff)
downloadlinux-a3170c1f924ce2565c4e160b9b095e65c03b2dc6.tar.xz
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/pci')
-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)
if (list_empty(&pci_mmcfg_list))
return;
+ if (pcibios_last_bus < 0) {
+ const struct pci_mmcfg_region *cfg;
+
+ list_for_each_entry(cfg, &pci_mmcfg_list, list) {
+ if (cfg->segment)
+ break;
+ pcibios_last_bus = cfg->end_bus;
+ }
+ }
+
if (pci_mmcfg_arch_init())
pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
else {