diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 409ffb9..6036ded 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -61,6 +61,7 @@
 extern int libata_fua;
 extern int libata_noacpi;
 extern int libata_allow_tpm;
+extern void ata_force_cbl(struct ata_port *ap);
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
 extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
 			   u64 block, u32 n_block, unsigned int tf_flags,