staging: greybus: Use setup_timer function

This patch uses setup_timer function instead of initializing timer with the
function and data fields.

Signed-off-by: sayli karnik <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/greybus/loopback.c

···
 		return -ENOMEM;
 
 	INIT_WORK(&op_async->work, gb_loopback_async_operation_work);
-	init_timer(&op_async->timer);
 	kref_init(&op_async->kref);
 
 	operation = gb_operation_create(gb->connection, type, request_size,
···
 	if (ret)
 		goto error;
 
-	op_async->timer.function = gb_loopback_async_operation_timeout;
+	setup_timer(&op_async->timer, gb_loopback_async_operation_timeout,
+			(unsigned long)operation->id);
 	op_async->timer.expires = jiffies + gb->jiffy_timeout;
-	op_async->timer.data = (unsigned long)operation->id;
 	add_timer(&op_async->timer);
 
 	goto done;