diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 3f0173f..e9acd55 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1318,6 +1318,8 @@
 				IRQ routing is enabled.
 		noacpi		[X86-32] Do not use ACPI for IRQ routing
 				or for PCI scanning.
+		use_crs		[X86-32] Use _CRS for PCI resource
+				allocation.
 		routeirq	Do IRQ routing for all PCI devices.
 				This is normally done in pci_enable_device(),
 				so this option is a temporary workaround