diff --git a/include/linux/libata.h b/include/linux/libata.h
index d9eb20c..bdb7c6e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -927,6 +927,7 @@
 extern int ata_cable_40wire(struct ata_port *ap);
 extern int ata_cable_80wire(struct ata_port *ap);
 extern int ata_cable_sata(struct ata_port *ap);
+extern int ata_cable_ignore(struct ata_port *ap);
 extern int ata_cable_unknown(struct ata_port *ap);
 
 /*