diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 447e834..c87d518a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2666,6 +2666,18 @@
 }
 
 /**
+ * pcibios_setup - process "pci=" kernel boot arguments
+ * @str: string used to pass in "pci=" kernel boot arguments
+ *
+ * Process kernel boot arguments.  This is the default implementation.
+ * Architecture specific implementations can override this as necessary.
+ */
+char * __weak __init pcibios_setup(char *str)
+{
+	return str;
+}
+
+/**
  * pcibios_set_master - enable PCI bus-mastering for device dev
  * @dev: the PCI device to enable
  *