README: replace reference to boards.cfg

[oweals/u-boot.git] / drivers / mtd / mtd-uclass.c

diff --git a/drivers/mtd/mtd-uclass.c b/drivers/mtd/mtd-uclass.c
index 7b7c48ec5adf6e7893f9f9436c75be6e56e4bedc..541821743193537c497dcc90c59f33b06c1d95f2 100644 (file)
--- a/drivers/mtd/mtd-uclass.c
+++ b/drivers/mtd/mtd-uclass.c
@@ -1,14 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
 #include <dm.h>
+#include <dm/device-internal.h>
 #include <errno.h>
 #include <mtd.h>
 
+/**
+ * mtd_probe - Probe the device @dev if not already done
+ *
+ * @dev: U-Boot device to probe
+ *
+ * @return 0 on success, an error otherwise.
+ */
+int mtd_probe(struct udevice *dev)
+{
+       if (device_active(dev))
+               return 0;
+
+       return device_probe(dev);
+}
+
 /*
  * Implement a MTD uclass which should include most flash drivers.
  * The uclass private is pointed to mtd_info.