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>

2 files changed, 6 insertions, 1 deletions

diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 065f3fe02a2f..eec2aedb4ab8 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/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)
diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h
index 685af7e8b120..e9a9fb188f97 100644
--- a/include/linux/platform_data/mtd-onenand-omap2.h
+++ b/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