diff --git a/sound/firewire/cmp.c b/sound/firewire/cmp.c
index deb494d6e78553d625c1772f5e79a9704e5ae3ed..c7f7a3164390e6c746b1e77e3fa27769a953d92a 100644
--- a/sound/firewire/cmp.c
+++ b/sound/firewire/cmp.c
@@ -94,6 +94,7 @@ static int pcr_modify(struct cmp_connection *c,
  */
 int cmp_connection_init(struct cmp_connection *c,
 			struct fw_unit *unit,
+			enum cmp_direction direction,
 			unsigned int pcr_index)
 {
 	__be32 mpr_be;
diff --git a/sound/firewire/cmp.h b/sound/firewire/cmp.h
index 2320cd44d49954b16df2109212dcbd51e9b7ab40..9b58448d5791ab2ca705b090023eae50693409c5 100644
--- a/sound/firewire/cmp.h
+++ b/sound/firewire/cmp.h
@@ -7,6 +7,11 @@
 
 struct fw_unit;
 
+enum cmp_direction {
+	CMP_INPUT = 0,
+	CMP_OUTPUT,
+};
+
 /**
  * struct cmp_connection - manages an isochronous connection to a device
  * @speed: the connection's actual speed
@@ -26,10 +31,12 @@ struct cmp_connection {
 	__be32 last_pcr_value;
 	unsigned int pcr_index;
 	unsigned int max_speed;
+	enum cmp_direction direction;
 };
 
 int cmp_connection_init(struct cmp_connection *connection,
 			struct fw_unit *unit,
+			enum cmp_direction direction,
 			unsigned int pcr_index);
 void cmp_connection_destroy(struct cmp_connection *connection);
 
diff --git a/sound/firewire/speakers.c b/sound/firewire/speakers.c
index 58e7ab010c602aa57a0860bcbf916e5466589af3..dd9983b98607da4859aa56a7bdba4c7e8275403c 100644
--- a/sound/firewire/speakers.c
+++ b/sound/firewire/speakers.c
@@ -673,7 +673,7 @@ static int fwspk_probe(struct fw_unit *unit,
 	fwspk->unit = fw_unit_get(unit);
 	fwspk->device_info = (const struct device_info *)id->driver_data;
 
-	err = cmp_connection_init(&fwspk->connection, unit, 0);
+	err = cmp_connection_init(&fwspk->connection, unit, CMP_INPUT, 0);
 	if (err < 0)
 		goto err_unit;