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-rw-r--r--arch/x86/pci/acpi.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 49a5cb55429b..ed2835e148b5 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -416,7 +416,12 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
kfree(sd);
} else {
get_current_resources(device, busnum, domain, &resources);
- if (list_empty(&resources))
+
+ /*
+ * _CRS with no apertures is normal, so only fall back to
+ * defaults or native bridge info if we're ignoring _CRS.
+ */
+ if (!pci_use_crs)
x86_pci_root_bus_resources(busnum, &resources);
bus = pci_create_root_bus(NULL, busnum, &pci_root_ops, sd,
&resources);
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