From: Miaoqian Lin <linmq006@gmail.com>
Date: Mon, 23 May 2022 14:32:55 +0000 (+0400)
Subject: mtd: maps: Fix refcount leak in ap_flash_init
X-Git-Tag: v5.15.73~1414
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d5730780e9ea84e5476752a47c749036c6a74af5;p=platform%2Fkernel%2Flinux-rpi.git

mtd: maps: Fix refcount leak in ap_flash_init

[ Upstream commit 77087a04c8fd554134bddcb8a9ff87b21f357926 ]

of_find_matching_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: b0afd44bc192 ("mtd: physmap_of: add a hook for Versatile write protection")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220523143255.4376-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/mtd/maps/physmap-versatile.c b/drivers/mtd/maps/physmap-versatile.c
index 297a509..a1b8b7b 100644
--- a/drivers/mtd/maps/physmap-versatile.c
+++ b/drivers/mtd/maps/physmap-versatile.c
@@ -93,6 +93,7 @@ static int ap_flash_init(struct platform_device *pdev)
 		return -ENODEV;
 	}
 	ebi_base = of_iomap(ebi, 0);
+	of_node_put(ebi);
 	if (!ebi_base)
 		return -ENODEV;