linux-kernel - [PATCH 4.14 125/136] mtd: rawnand: oxnas: Fix the probe error path

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Date:   Tue, 23 Jun 2020 21:59:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miquel Raynal <miquel.raynal@...tlin.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 125/136] mtd: rawnand: oxnas: Fix the probe error path

From: Miquel Raynal <miquel.raynal@...tlin.com>

[ Upstream commit 154298e2a3f6c9ce1d76cdb48d89fd5b107ea1a3 ]

nand_release() is supposed be called after MTD device registration.
Here, only nand_scan() happened, so use nand_cleanup() instead.

While at it, be consistent and move the function call in the error
path thanks to a goto statement.

Fixes: 668592492409 ("mtd: nand: Add OX820 NAND Support")
Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: stable@...r.kernel.org
Link: https://lore.kernel.org/linux-mtd/20200519130035.1883-37-miquel.raynal@bootlin.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mtd/nand/oxnas_nand.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/nand/oxnas_nand.c b/drivers/mtd/nand/oxnas_nand.c
index 7f0ba28f8a007..350d4226b436a 100644
--- a/drivers/mtd/nand/oxnas_nand.c
+++ b/drivers/mtd/nand/oxnas_nand.c
@@ -147,10 +147,8 @@ static int oxnas_nand_probe(struct platform_device *pdev)
 			goto err_release_child;
 
 		err = mtd_device_register(mtd, NULL, 0);
-		if (err) {
-			nand_release(chip);
-			goto err_release_child;
-		}
+		if (err)
+			goto err_cleanup_nand;
 
 		oxnas->chips[nchips] = chip;
 		++nchips;
@@ -166,6 +164,8 @@ static int oxnas_nand_probe(struct platform_device *pdev)
 
 	return 0;
 
+err_cleanup_nand:
+	nand_cleanup(chip);
 err_release_child:
 	of_node_put(nand_np);
 err_clk_unprepare:
-- 
2.25.1