diff --git a/include/linux/libata.h b/include/linux/libata.h
index a6a31131..745c4f9 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -753,6 +753,7 @@
 extern u8 ata_altstatus(struct ata_port *ap);
 extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
 extern int ata_port_start (struct ata_port *ap);
+extern int ata_sff_port_start (struct ata_port *ap);
 extern irqreturn_t ata_interrupt (int irq, void *dev_instance);
 extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
 			  unsigned int buflen, int write_data);