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path: root/drivers/acpi/pci_mcfg.c
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Diffstat (limited to 'drivers/acpi/pci_mcfg.c')
-rw-r--r--drivers/acpi/pci_mcfg.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c
index a6a4ceaa6cc3..2944353253ed 100644
--- a/drivers/acpi/pci_mcfg.c
+++ b/drivers/acpi/pci_mcfg.c
@@ -195,11 +195,10 @@ int pci_mcfg_lookup(struct acpi_pci_root *root, struct resource *cfgres,
goto skip_lookup;
/*
- * We expect exact match, unless MCFG entry end bus covers more than
- * specified by caller.
+ * We expect the range in bus_res in the coverage of MCFG bus range.
*/
list_for_each_entry(e, &pci_mcfg_list, list) {
- if (e->segment == seg && e->bus_start == bus_res->start &&
+ if (e->segment == seg && e->bus_start <= bus_res->start &&
e->bus_end >= bus_res->end) {
root->mcfg_addr = e->addr;
}