diff --git a/include/linux/libata.h b/include/linux/libata.h
index a5c213c..6a9316c 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -433,6 +433,7 @@
 	void (*dev_select)(struct ata_port *ap, unsigned int device);
 
 	void (*phy_reset) (struct ata_port *ap); /* obsolete */
+	void (*set_mode) (struct ata_port *ap);
 	int (*probe_reset) (struct ata_port *ap, unsigned int *classes);
 
 	void (*post_set_mode) (struct ata_port *ap);