From: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Date: Mon, 19 Jan 2026 22:33:05 +0000 (+0300)
Subject: mtd: mtdpart: fix partitions searching
X-Git-Tag: v2026.04-rc2~22^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b06a1785b2bbe489a634e3158f82f93491a84328;p=thirdparty%2Fu-boot.git

mtd: mtdpart: fix partitions searching

mtdpart internally enumerate partitions starting from zero, but partition
driver API enumerate partitions starting from 1, so wrong partition will
be queried. This is wrong.

Unnecessary debug message also was removed.

Fixes: c29a6daec184 ("disk: support MTD partitions")
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
---

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 842d3e7274e..f3b7f1ee13c 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -1061,13 +1061,13 @@ EXPORT_SYMBOL_GPL(mtd_get_device_size);
 static struct mtd_info *mtd_get_partition_by_index(struct mtd_info *mtd, int index)
 {
 	struct mtd_info *part;
-	int i = 0;
+	int i = 1;
 
+	/* partition indexes starts from 1 */
 	list_for_each_entry(part, &mtd->partitions, node)
 		if (i++ == index)
 			return part;
 
-	debug("Partition with idx=%d not found on MTD device %s\n", index, mtd->name);
 	return NULL;
 }
 
@@ -1084,7 +1084,8 @@ static int __maybe_unused part_get_info_mtd(struct blk_desc *dev_desc, int part_
 
 	part = mtd_get_partition_by_index(master, part_idx);
 	if (!part) {
-		debug("Failed to find partition with idx=%d\n", part_idx);
+		debug("Failed to find partition with idx=%d on MTD device %s\n",
+		      part_idx, master->name);
 		return -EINVAL;
 	}