===================================================================
@@ -175,6 +175,10 @@ setup_resource(struct acpi_resource *acp
"conflicts with %s %pR\n",
res, conflict->name, conflict);
} else {
+ /* In case it falls in big reserved region */
+ if (res->parent->flags & IORESOURCE_BUSY)
+ res->flags |= IORESOURCE_BUSY;
+
pci_bus_add_resource(info->bus, res, 0);
info->res_num++;
if (addr.translation_offset)
===================================================================
@@ -103,6 +103,10 @@ pci_bus_alloc_resource(struct pci_bus *b
if (!r)
continue;
+ /* Driver can not reserve it later, so don't use it */
+ if (r->flags & IORESOURCE_BUSY)
+ continue;
+
/* type_mask must match */
if ((res->flags ^ r->flags) & type_mask)
continue;