--- zzzz-none-000/linux-3.10.107/sound/firewire/scs1x.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/firewire/scs1x.c	2021-02-04 17:41:59.000000000 +0000
@@ -369,7 +369,7 @@
 	data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
 			   scs->hss_handler.offset);
 	err = snd_fw_transaction(scs->unit, TCODE_WRITE_BLOCK_REQUEST,
-				 HSS1394_ADDRESS, &data, 8);
+				 HSS1394_ADDRESS, &data, 8, 0);
 	if (err < 0)
 		dev_err(&scs->unit->device, "HSS1394 communication failed\n");
 
@@ -384,18 +384,17 @@
 	kfree(scs->buffer);
 }
 
-static int scs_probe(struct device *unit_dev)
+static int scs_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
 {
-	struct fw_unit *unit = fw_unit(unit_dev);
 	struct fw_device *fw_dev = fw_parent_device(unit);
 	struct snd_card *card;
 	struct scs *scs;
 	int err;
 
-	err = snd_card_create(-16, NULL, THIS_MODULE, sizeof(*scs), &card);
+	err = snd_card_new(&unit->device, -16, NULL, THIS_MODULE,
+			   sizeof(*scs), &card);
 	if (err < 0)
 		return err;
-	snd_card_set_dev(card, unit_dev);
 
 	scs = card->private_data;
 	scs->card = card;
@@ -405,8 +404,10 @@
 	scs->output_idle = true;
 
 	scs->buffer = kmalloc(HSS1394_MAX_PACKET_SIZE, GFP_KERNEL);
-	if (!scs->buffer)
+	if (!scs->buffer) {
+		err = -ENOMEM;
 		goto err_card;
+	}
 
 	scs->hss_handler.length = HSS1394_MAX_PACKET_SIZE;
 	scs->hss_handler.address_callback = handle_hss;
@@ -440,7 +441,7 @@
 	if (err < 0)
 		goto err_card;
 
-	dev_set_drvdata(unit_dev, scs);
+	dev_set_drvdata(&unit->device, scs);
 
 	return 0;
 
@@ -451,9 +452,24 @@
 	return err;
 }
 
-static int scs_remove(struct device *dev)
+static void scs_update(struct fw_unit *unit)
+{
+	struct scs *scs = dev_get_drvdata(&unit->device);
+	int generation;
+	__be64 data;
+
+	data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
+			   scs->hss_handler.offset);
+	generation = fw_parent_device(unit)->generation;
+	smp_rmb(); /* node_id vs. generation */
+	snd_fw_transaction(scs->unit, TCODE_WRITE_BLOCK_REQUEST,
+			   HSS1394_ADDRESS, &data, 8,
+			   FW_FIXED_GENERATION | generation);
+}
+
+static void scs_remove(struct fw_unit *unit)
 {
-	struct scs *scs = dev_get_drvdata(dev);
+	struct scs *scs = dev_get_drvdata(&unit->device);
 
 	snd_card_disconnect(scs->card);
 
@@ -465,19 +481,6 @@
 	tasklet_kill(&scs->tasklet);
 
 	snd_card_free_when_closed(scs->card);
-
-	return 0;
-}
-
-static void scs_update(struct fw_unit *unit)
-{
-	struct scs *scs = dev_get_drvdata(&unit->device);
-	__be64 data;
-
-	data = cpu_to_be64(((u64)HSS1394_TAG_CHANGE_ADDRESS << 56) |
-			   scs->hss_handler.offset);
-	snd_fw_transaction(scs->unit, TCODE_WRITE_BLOCK_REQUEST,
-			   HSS1394_ADDRESS, &data, 8);
 }
 
 static const struct ieee1394_device_id scs_id_table[] = {
@@ -506,10 +509,10 @@
 		.owner  = THIS_MODULE,
 		.name   = KBUILD_MODNAME,
 		.bus    = &fw_bus_type,
-		.probe  = scs_probe,
-		.remove = scs_remove,
 	},
+	.probe    = scs_probe,
 	.update   = scs_update,
+	.remove   = scs_remove,
 	.id_table = scs_id_table,
 };