diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 2220de3c945e..6274b86eb943 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -206,6 +206,7 @@ struct outbound_phy_packet_event {
 	struct fw_packet p;
 	union {
 		struct fw_cdev_event_phy_packet without_tstamp;
+		struct fw_cdev_event_phy_packet2 with_tstamp;
 	} phy_packet;
 };
 
@@ -213,6 +214,7 @@ struct inbound_phy_packet_event {
 	struct event event;
 	union {
 		struct fw_cdev_event_phy_packet without_tstamp;
+		struct fw_cdev_event_phy_packet2 with_tstamp;
 	} phy_packet;
 };
 
@@ -1555,7 +1557,6 @@ static void outbound_phy_packet_callback(struct fw_packet *packet,
 		container_of(packet, struct outbound_phy_packet_event, p);
 	struct client *e_client = e->client;
 	u32 rcode;
-	struct fw_cdev_event_phy_packet *pp;
 
 	switch (status) {
 	// expected:
@@ -1583,10 +1584,31 @@ static void outbound_phy_packet_callback(struct fw_packet *packet,
 		break;
 	}
 
-	pp = &e->phy_packet.without_tstamp;
-	pp->rcode = rcode;
-	pp->data[0] = packet->timestamp;
-	queue_event(e->client, &e->event, &e->phy_packet, sizeof(*pp) + pp->length, NULL, 0);
+	switch (e->phy_packet.without_tstamp.type) {
+	case FW_CDEV_EVENT_PHY_PACKET_SENT:
+	{
+		struct fw_cdev_event_phy_packet *pp = &e->phy_packet.without_tstamp;
+
+		pp->rcode = rcode;
+		pp->data[0] = packet->timestamp;
+		queue_event(e->client, &e->event, &e->phy_packet, sizeof(*pp) + pp->length,
+			    NULL, 0);
+		break;
+	}
+	case FW_CDEV_EVENT_PHY_PACKET_SENT2:
+	{
+		struct fw_cdev_event_phy_packet2 *pp = &e->phy_packet.with_tstamp;
+
+		pp->rcode = rcode;
+		pp->tstamp = packet->timestamp;
+		queue_event(e->client, &e->event, &e->phy_packet, sizeof(*pp) + pp->length,
+			    NULL, 0);
+		break;
+	}
+	default:
+		WARN_ON(1);
+		break;
+	}
 
 	client_put(e_client);
 }
@@ -1596,13 +1618,12 @@ static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg)
 	struct fw_cdev_send_phy_packet *a = &arg->send_phy_packet;
 	struct fw_card *card = client->device->card;
 	struct outbound_phy_packet_event *e;
-	struct fw_cdev_event_phy_packet *pp;
 
 	/* Access policy: Allow this ioctl only on local nodes' device files. */
 	if (!client->device->is_local)
 		return -ENOSYS;
 
-	e = kzalloc(sizeof(*e) + 4, GFP_KERNEL);
+	e = kzalloc(sizeof(*e) + sizeof(a->data), GFP_KERNEL);
 	if (e == NULL)
 		return -ENOMEM;
 
@@ -1616,11 +1637,23 @@ static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg)
 	e->p.header_length	= 12;
 	e->p.callback		= outbound_phy_packet_callback;
 
-	pp = &e->phy_packet.without_tstamp;
-	pp->closure = a->closure;
-	pp->type = FW_CDEV_EVENT_PHY_PACKET_SENT;
-	if (is_ping_packet(a->data))
-		pp->length = 4;
+	if (client->version < FW_CDEV_VERSION_EVENT_ASYNC_TSTAMP) {
+		struct fw_cdev_event_phy_packet *pp = &e->phy_packet.without_tstamp;
+
+		pp->closure = a->closure;
+		pp->type = FW_CDEV_EVENT_PHY_PACKET_SENT;
+		if (is_ping_packet(a->data))
+			pp->length = 4;
+	} else {
+		struct fw_cdev_event_phy_packet2 *pp = &e->phy_packet.with_tstamp;
+
+		pp->closure = a->closure;
+		pp->type = FW_CDEV_EVENT_PHY_PACKET_SENT2;
+		// Keep the data field so that application can match the response event to the
+		// request.
+		pp->length = sizeof(a->data);
+		memcpy(pp->data, a->data, sizeof(a->data));
+	}
 
 	card->driver->send_request(card, &e->p);
 
@@ -1655,20 +1688,33 @@ void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p)
 	spin_lock_irqsave(&card->lock, flags);
 
 	list_for_each_entry(client, &card->phy_receiver_list, phy_receiver_link) {
-		struct fw_cdev_event_phy_packet *pp;
-
 		e = kmalloc(sizeof(*e) + 8, GFP_ATOMIC);
 		if (e == NULL)
 			break;
 
-		pp = &e->phy_packet.without_tstamp;
-		pp->closure = client->phy_receiver_closure;
-		pp->type = FW_CDEV_EVENT_PHY_PACKET_RECEIVED;
-		pp->rcode = RCODE_COMPLETE;
-		pp->length = 8;
-		pp->data[0] = p->header[1];
-		pp->data[1] = p->header[2];
-		queue_event(client, &e->event, &e->phy_packet, sizeof(*pp) + 8, NULL, 0);
+		if (client->version < FW_CDEV_VERSION_EVENT_ASYNC_TSTAMP) {
+			struct fw_cdev_event_phy_packet *pp = &e->phy_packet.without_tstamp;
+
+			pp->closure = client->phy_receiver_closure;
+			pp->type = FW_CDEV_EVENT_PHY_PACKET_RECEIVED;
+			pp->rcode = RCODE_COMPLETE;
+			pp->length = 8;
+			pp->data[0] = p->header[1];
+			pp->data[1] = p->header[2];
+			queue_event(client, &e->event, &e->phy_packet, sizeof(*pp) + 8, NULL, 0);
+		} else {
+			struct fw_cdev_event_phy_packet2 *pp = &e->phy_packet.with_tstamp;
+
+			pp = &e->phy_packet.with_tstamp;
+			pp->closure = client->phy_receiver_closure;
+			pp->type = FW_CDEV_EVENT_PHY_PACKET_RECEIVED2;
+			pp->rcode = RCODE_COMPLETE;
+			pp->length = 8;
+			pp->tstamp = p->timestamp;
+			pp->data[0] = p->header[1];
+			pp->data[1] = p->header[2];
+			queue_event(client, &e->event, &e->phy_packet, sizeof(*pp) + 8, NULL, 0);
+		}
 	}
 
 	spin_unlock_irqrestore(&card->lock, flags);