[U-Boot] [RFC PATCH 16/20] mtd: uclass: add probe function

[Miquel Raynal <miquel.raynal@bootlin.com>]

The user might want to trigger the probe of any MTD device, export these
functions so they can be called from a command source file.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/mtd/mtd-uclass.c | 9 +++++++++
 include/linux/mtd/mtd.h  | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/drivers/mtd/mtd-uclass.c b/drivers/mtd/mtd-uclass.c
index 7b7c48ec5a..1b6533829c 100644
--- a/drivers/mtd/mtd-uclass.c
+++ b/drivers/mtd/mtd-uclass.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <dm/device-internal.h>
 #include <errno.h>
 #include <mtd.h>
 
@@ -14,6 +15,14 @@
  * The uclass private is pointed to mtd_info.
  */
 
+int mtd_probe(struct udevice *dev)
+{
+	if (device_active(dev))
+		return 0;
+
+	return device_probe(dev);
+}
+
 UCLASS_DRIVER(mtd) = {
 	.id		= UCLASS_MTD,
 	.name		= "mtd",
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index b5f9151a70..f89a32ae36 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -548,5 +548,8 @@ int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off,
 void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset,
 			  const uint64_t length, uint64_t *len_incl_bad,
 			  int *truncated);
+
+int mtd_probe(struct udevice *dev);
+
 #endif
 #endif /* __MTD_MTD_H__ */
-- 
2.14.1