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

From: "Cédric Le Goater" <clg@kaod.org>
To: linux-mtd@lists.infradead.org
Cc: "Mark Rutland" <mark.rutland@arm.com>,
	"Boris Brezillon" <boris.brezillon@free-electrons.com>,
	devicetree@vger.kernel.org, "Richard Weinberger" <richard@nod.at>,
	"Marek Vasut" <marek.vasut@gmail.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Cédric Le Goater" <clg@kaod.org>,
	"Cyrille Pitchen" <cyrille.pitchen@atmel.com>,
	"Brian Norris" <computersforpeace@gmail.com>,
	"David Woodhouse" <dwmw2@infradead.org>
Subject: [PATCH 1/3] mtd: name the mtd device with an optional label property
Date: Mon, 16 Jan 2017 14:27:03 +0100	[thread overview]
Message-ID: <1484573225-19095-2-git-send-email-clg@kaod.org> (raw)
In-Reply-To: <1484573225-19095-1-git-send-email-clg@kaod.org>

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

Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Cédric Le Goater <clg@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


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