diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index c132c676df3a..e5460d84ed08 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1917,8 +1917,6 @@ static int __unregister(struct device *dev, void *null)
  */
 void spi_unregister_master(struct spi_master *master)
 {
-	int dummy;
-
 	if (master->queued) {
 		if (spi_destroy_queue(master))
 			dev_err(&master->dev, "queue remove failed\n");
@@ -1928,7 +1926,7 @@ void spi_unregister_master(struct spi_master *master)
 	list_del(&master->list);
 	mutex_unlock(&board_lock);
 
-	dummy = device_for_each_child(&master->dev, NULL, __unregister);
+	device_for_each_child(&master->dev, NULL, __unregister);
 	device_unregister(&master->dev);
 }
 EXPORT_SYMBOL_GPL(spi_unregister_master);