ALSA: line6: Use explicit type for serial number

The serial number (aka ESN) is a 32-bit value.
Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/line6/driver.c

@@ -426,7 +426,7 @@ EXPORT_SYMBOL_GPL(line6_write_data);
 	Read Line 6 device serial number.
 	(POD, TonePort, GuitarPort)
 */
-int line6_read_serial_number(struct usb_line6 *line6, int *serial_number)
+int line6_read_serial_number(struct usb_line6 *line6, u32 *serial_number)
 {
 	return line6_read_data(line6, 0x80d0, serial_number,
 			       sizeof(*serial_number));

sound/usb/line6/driver.h

@@ -150,7 +150,7 @@ extern char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1,
 extern int line6_read_data(struct usb_line6 *line6, int address, void *data,
 			   size_t datalen);
 extern int line6_read_serial_number(struct usb_line6 *line6,
-				    int *serial_number);
+				    u32 *serial_number);
 extern int line6_send_raw_message_async(struct usb_line6 *line6,
 					const char *buffer, int size);
 extern int line6_send_sysex_message(struct usb_line6 *line6,

sound/usb/line6/pod.c

@@ -73,7 +73,7 @@ struct usb_line6_pod {
 	int startup_progress;
 
 	/* Serial number of device */
-	int serial_number;
+	u32 serial_number;
 
 	/* Firmware version (x 100) */
 	int firmware_version;
@@ -247,7 +247,7 @@ static ssize_t serial_number_show(struct device *dev,
 	struct usb_interface *interface = to_usb_interface(dev);
 	struct usb_line6_pod *pod = usb_get_intfdata(interface);
 
-	return sprintf(buf, "%d\n", pod->serial_number);
+	return sprintf(buf, "%u\n", pod->serial_number);
 }
 
 /*

sound/usb/line6/toneport.c

@@ -49,7 +49,7 @@ struct usb_line6_toneport {
 	int source;
 
 	/* Serial number of device */
-	int serial_number;
+	u32 serial_number;
 
 	/* Firmware version (x 100) */
 	int firmware_version;