From:   Miaoqian Lin <linmq006@gmail.com>
Cc:     linmq006@gmail.com, Paul Cercueil <paul@crapouillou.net>,
        Harvey Hunt <harveyhuntnexus@gmail.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-mips@vger.kernel.org, linux-mtd@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] mtd: rawnand: ingenic: Fix missing put_device in ingenic_ecc_get
Date:   Thu, 30 Dec 2021 07:27:51 +0000
Message-Id: <20211230072751.21622-1-linmq006@gmail.com>
To:     unlisted-recipients:; (no To-header on input)
Precedence: bulk

If of_find_device_by_node() succeeds, ingenic_ecc_get() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling.

Fixes: 15de8c6 ("mtd: rawnand: ingenic: Separate top-level and SoC specific code")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/mtd/nand/raw/ingenic/ingenic_ecc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
index efe0ffe4f1ab..9054559e52dd 100644
--- a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
+++ b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
@@ -68,9 +68,14 @@ static struct ingenic_ecc *ingenic_ecc_get(struct device_node *np)
 	struct ingenic_ecc *ecc;
 
 	pdev = of_find_device_by_node(np);
-	if (!pdev || !platform_get_drvdata(pdev))
+	if (!pdev)
 		return ERR_PTR(-EPROBE_DEFER);
 
+	if (!platform_get_drvdata(pdev)) {
+		put_device(&pdev->dev);
+		return ERR_PTR(-EPROBE_DEFER);
+	}
+
 	ecc = platform_get_drvdata(pdev);
 	clk_prepare_enable(ecc->clk);
 
-- 
2.17.1