mtd: omap-onenand: pass device_node in platform data

Pass an optional device_node pointer in the platform data,
which in turn will be put into a mtd_part_parser_data.
This way, code that sets up the platform devices can pass
along the node from DT so that the partitions can be parsed.

For non-DT boards, this change has no effect.
Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/mtd/onenand/omap2.c

@@ -637,6 +637,7 @@ static int omap2_onenand_probe(struct platform_device *pdev)
 	struct onenand_chip *this;
 	int r;
 	struct resource *res;
+	struct mtd_part_parser_data ppdata = {};
 
 	pdata = pdev->dev.platform_data;
 	if (pdata == NULL) {
@@ -767,7 +768,8 @@ static int omap2_onenand_probe(struct platform_device *pdev)
 	if ((r = onenand_scan(&c->mtd, 1)) < 0)
 		goto err_release_regulator;
 
-	r = mtd_device_parse_register(&c->mtd, NULL, NULL,
+	ppdata.of_node = pdata->of_node;
+	r = mtd_device_parse_register(&c->mtd, NULL, &ppdata,
 				      pdata ? pdata->parts : NULL,
 				      pdata ? pdata->nr_parts : 0);
 	if (r)

include/linux/platform_data/mtd-onenand-omap2.h

@@ -29,5 +29,8 @@ struct omap_onenand_platform_data {
 	u8			flags;
 	u8			regulator_can_sleep;
 	u8			skip_initial_unlocking;
+
+	/* for passing the partitions */
+	struct device_node	*of_node;
 };
 #endif