greybus: i2c-gb: move i2c protocol into the gpbridge driver

The i2c protocol belongs in the gpbridge driver, so move it
there.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>

drivers/staging/greybus/Makefile

@@ -14,11 +14,11 @@ gpbridge-y :=	gpb.o		\
 		uart-gb.o	\
 		pwm-gb.o	\
 		gpio-gb.o	\
+		i2c-gb.o	\
 		usb-gb.o
 
 obj-m += greybus.o
 obj-m += gpbridge.o
-obj-m += i2c-gb.o
 obj-m += vibrator-gb.o
 obj-m += battery-gb.o
 obj-m += es1-ap-usb.o

drivers/staging/greybus/gpb.c

@@ -41,8 +41,14 @@ static int __init gpbridge_init(void)
 		pr_err("error initializing usb protocol\n");
 		goto error_usb;
 	}
+	if (gb_i2c_protocol_init()) {
+		pr_err("error initializing usb protocol\n");
+		goto error_i2c;
+	}
 	return 0;
 
+error_i2c:
+	gb_usb_protocol_exit();
 error_usb:
 	gb_sdio_protocol_exit();
 error_sdio:
@@ -57,6 +63,7 @@ static int __init gpbridge_init(void)
 
 static void __exit gpbridge_exit(void)
 {
+	gb_i2c_protocol_exit();
 	gb_usb_protocol_exit();
 	gb_sdio_protocol_exit();
 	gb_uart_protocol_exit();

drivers/staging/greybus/i2c-gb.c

@@ -438,6 +438,12 @@ static struct gb_protocol i2c_protocol = {
 	.request_recv		= NULL,	/* no incoming requests */
 };
 
-gb_protocol_driver(&i2c_protocol);
+int gb_i2c_protocol_init(void)
+{
+	return gb_protocol_register(&i2c_protocol);
+}
 
-MODULE_LICENSE("GPL v2");
+void gb_i2c_protocol_exit(void)
+{
+	gb_protocol_deregister(&i2c_protocol);
+}

drivers/staging/greybus/protocol.h

@@ -66,6 +66,9 @@ extern void gb_sdio_protocol_exit(void);
 extern int gb_usb_protocol_init(void);
 extern void gb_usb_protocol_exit(void);
 
+extern int gb_i2c_protocol_init(void);
+extern void gb_i2c_protocol_exit(void);
+
 #define gb_protocol_driver(__protocol)			\
 static int __init protocol_init(void)			\
 {							\