ALSA: line6: Drop interface argument from private_init and disconnect callbacks

The interface argument is used just for retrieving the assigned
device, which can be already found in line6->ifcdev.  Drop them from
the callbacks.  Also, pass the usb id to private_init so that the
driver can deal with it there.  This is a preliminary work for the
further cleanup to move the whole allocation into driver.c.
Tested-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/line6/driver.c

@@ -488,9 +488,10 @@ static int line6_init_cap_control(struct usb_line6 *line6)
 	Probe USB device.
 */
 int line6_probe(struct usb_interface *interface,
+		const struct usb_device_id *id,
 		struct usb_line6 *line6,
 		const struct line6_properties *properties,
-		int (*private_init)(struct usb_interface *, struct usb_line6 *))
+		int (*private_init)(struct usb_line6 *, const struct usb_device_id *id))
 {
 	struct usb_device *usbdev = interface_to_usbdev(interface);
 	struct snd_card *card;
@@ -552,7 +553,7 @@ int line6_probe(struct usb_interface *interface,
 	}
 
 	/* initialize device data based on device: */
-	ret = private_init(interface, line6);
+	ret = private_init(line6, id);
 	if (ret < 0)
 		goto error;
 
@@ -565,7 +566,7 @@ int line6_probe(struct usb_interface *interface,
 
  error:
 	if (line6->disconnect)
-		line6->disconnect(interface);
+		line6->disconnect(line6);
 	snd_card_free(card);
 	return ret;
 }
@@ -592,7 +593,7 @@ void line6_disconnect(struct usb_interface *interface)
 	if (line6->line6pcm)
 		line6_pcm_disconnect(line6->line6pcm);
 	if (line6->disconnect)
-		line6->disconnect(interface);
+		line6->disconnect(line6);
 
 	dev_info(&interface->dev, "Line 6 %s now disconnected\n",
 		 line6->properties->name);

sound/usb/line6/driver.h

@@ -157,7 +157,7 @@ struct usb_line6 {
 	int message_length;
 
 	void (*process_message)(struct usb_line6 *);
-	void (*disconnect)(struct usb_interface *);
+	void (*disconnect)(struct usb_line6 *line6);
 };
 
 extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1,
@@ -180,9 +180,11 @@ extern int line6_write_data(struct usb_line6 *line6, int address, void *data,
 			    size_t datalen);
 
 int line6_probe(struct usb_interface *interface,
+		const struct usb_device_id *id,
 		struct usb_line6 *line6,
 		const struct line6_properties *properties,
-		int (*private_init)(struct usb_interface *, struct usb_line6 *));
+		int (*private_init)(struct usb_line6 *, const struct usb_device_id *id));
+
 void line6_disconnect(struct usb_interface *interface);
 
 #ifdef CONFIG_PM

sound/usb/line6/pod.c

@@ -399,10 +399,10 @@ static struct snd_kcontrol_new pod_control_monitor = {
 /*
 	POD device disconnected.
 */
-static void line6_pod_disconnect(struct usb_interface *interface)
+static void line6_pod_disconnect(struct usb_line6 *line6)
 {
-	struct usb_line6_pod *pod = usb_get_intfdata(interface);
-	struct device *dev = &interface->dev;
+	struct usb_line6_pod *pod = (struct usb_line6_pod *)line6;
+	struct device *dev = line6->ifcdev;
 
 	/* remove sysfs entries: */
 	device_remove_file(dev, &dev_attr_device_id);
@@ -435,8 +435,8 @@ static int pod_create_files2(struct device *dev)
 /*
 	 Try to init POD device.
 */
-static int pod_init(struct usb_interface *interface,
-		    struct usb_line6 *line6)
+static int pod_init(struct usb_line6 *line6,
+		    const struct usb_device_id *id)
 {
 	int err;
 	struct usb_line6_pod *pod = (struct usb_line6_pod *) line6;
@@ -448,7 +448,7 @@ static int pod_init(struct usb_interface *interface,
 	INIT_WORK(&pod->startup_work, pod_startup4);
 
 	/* create sysfs entries: */
-	err = pod_create_files2(&interface->dev);
+	err = pod_create_files2(line6->ifcdev);
 	if (err < 0)
 		return err;
 
@@ -596,7 +596,7 @@ static int pod_probe(struct usb_interface *interface,
 	pod = kzalloc(sizeof(*pod), GFP_KERNEL);
 	if (!pod)
 		return -ENODEV;
-	return line6_probe(interface, &pod->line6,
+	return line6_probe(interface, id, &pod->line6,
 			   &pod_properties_table[id->driver_info],
 			   pod_init);
 }

sound/usb/line6/podhd.c

@@ -87,8 +87,8 @@ static struct line6_pcm_properties podhd_pcm_properties = {
 /*
 	Try to init POD HD device.
 */
-static int podhd_init(struct usb_interface *interface,
-		      struct usb_line6 *line6)
+static int podhd_init(struct usb_line6 *line6,
+		      const struct usb_device_id *id)
 {
 	int err;
 
@@ -182,7 +182,7 @@ static int podhd_probe(struct usb_interface *interface,
 	podhd = kzalloc(sizeof(*podhd), GFP_KERNEL);
 	if (!podhd)
 		return -ENODEV;
-	return line6_probe(interface, &podhd->line6,
+	return line6_probe(interface, id, &podhd->line6,
 			   &podhd_properties_table[id->driver_info],
 			   podhd_init);
 }

sound/usb/line6/toneport.c

@@ -387,11 +387,11 @@ static void toneport_setup(struct usb_line6_toneport *toneport)
 /*
 	Toneport device disconnected.
 */
-static void line6_toneport_disconnect(struct usb_interface *interface)
+static void line6_toneport_disconnect(struct usb_line6 *line6)
 {
-	struct usb_line6_toneport *toneport;
+	struct usb_line6_toneport *toneport =
+		(struct usb_line6_toneport *)line6;
 
-	toneport = usb_get_intfdata(interface);
 	del_timer_sync(&toneport->timer);
 
 	if (toneport_has_led(toneport->type))
@@ -402,12 +402,13 @@ static void line6_toneport_disconnect(struct usb_interface *interface)
 /*
 	 Try to init Toneport device.
 */
-static int toneport_init(struct usb_interface *interface,
-			 struct usb_line6 *line6)
+static int toneport_init(struct usb_line6 *line6,
+			 const struct usb_device_id *id)
 {
 	int err;
 	struct usb_line6_toneport *toneport =  (struct usb_line6_toneport *) line6;
 
+	toneport->type = id->driver_info;
 	setup_timer(&toneport->timer, toneport_start_pcm,
 		    (unsigned long)toneport);
 
@@ -562,8 +563,7 @@ static int toneport_probe(struct usb_interface *interface,
 	toneport = kzalloc(sizeof(*toneport), GFP_KERNEL);
 	if (!toneport)
 		return -ENODEV;
-	toneport->type = id->driver_info;
-	return line6_probe(interface, &toneport->line6,
+	return line6_probe(interface, id, &toneport->line6,
 			   &toneport_properties_table[id->driver_info],
 			   toneport_init);
 }

sound/usb/line6/variax.c

@@ -210,11 +210,9 @@ static void line6_variax_process_message(struct usb_line6 *line6)
 /*
 	Variax destructor.
 */
-static void line6_variax_disconnect(struct usb_interface *interface)
+static void line6_variax_disconnect(struct usb_line6 *line6)
 {
-	struct usb_line6_variax *variax;
-
-	variax = usb_get_intfdata(interface);
+	struct usb_line6_variax *variax = (struct usb_line6_variax *)line6;
 
 	del_timer(&variax->startup_timer1);
 	del_timer(&variax->startup_timer2);
@@ -226,8 +224,8 @@ static void line6_variax_disconnect(struct usb_interface *interface)
 /*
 	 Try to init workbench device.
 */
-static int variax_init(struct usb_interface *interface,
-		       struct usb_line6 *line6)
+static int variax_init(struct usb_line6 *line6,
+		       const struct usb_device_id *id)
 {
 	struct usb_line6_variax *variax = (struct usb_line6_variax *) line6;
 	int err;
@@ -303,7 +301,7 @@ static int variax_probe(struct usb_interface *interface,
 	variax = kzalloc(sizeof(*variax), GFP_KERNEL);
 	if (!variax)
 		return -ENODEV;
-	return line6_probe(interface, &variax->line6,
+	return line6_probe(interface, id, &variax->line6,
 			   &variax_properties_table[id->driver_info],
 			   variax_init);
 }