[PATCH 1/3] mtd: name the mtd device with an optional label property

[Cédric Le Goater]

This can be used to easily identify a specific chip on a system with
multiple chips.

Suggested-by: Boris Brezillon <boris.brezillon at free-electrons.com>
Signed-off-by: Cédric Le Goater <clg at kaod.org>
---
 drivers/mtd/mtdcore.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 052772f7caef..bf61557b599d 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -654,6 +654,13 @@ static int mtd_add_device_partitions(struct mtd_info *mtd,
  */
 static void mtd_set_dev_defaults(struct mtd_info *mtd)
 {
+	/*
+	 * If DT support is enabled and we have a valid of_node pointer, try to
+	 * extract the MTD name from the label property.
+	 */
+	if (IS_ENABLED(CONFIG_OF) && mtd->dev.of_node)
+		of_property_read_string(mtd->dev.of_node, "label", &mtd->name);
+
 	if (mtd->dev.parent) {
 		if (!mtd->owner && mtd->dev.parent->driver)
 			mtd->owner = mtd->dev.parent->driver->owner;
-- 
2.7.4