X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Facpi%2Fpci_root.c;h=ae3fe4e642035b2d51b2e3f6c4d93e68a6cb1bcc;hb=f41683a204ea61568f0fd0804d47c19561f2ee39;hp=850d7bf0c873fb64af77ada90e971a733527e2bd;hpb=8c14f72b57570d71afda03c5c51b06f0b4af4367;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 850d7bf0c873..ae3fe4e64203 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -768,6 +768,13 @@ static void pci_acpi_root_add_resources(struct acpi_pci_root_info *info)
 		else
 			continue;
 
+		/*
+		 * Some legacy x86 host bridge drivers use iomem_resource and
+		 * ioport_resource as default resource pool, skip it.
+		 */
+		if (res == root)
+			continue;
+
 		conflict = insert_resource_conflict(root, res);
 		if (conflict) {
 			dev_info(&info->bridge->dev,