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From: Miaoqian Lin <linmq006@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] mtd: maps: Fix refcount leak in of_flash_probe_versatile
Date: Mon, 23 May 2022 18:02:05 +0400	[thread overview]
Message-ID: <20220523140205.48625-1-linmq006@gmail.com> (raw)

of_find_matching_node_and_match() 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>
---
 drivers/mtd/maps/physmap-versatile.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/maps/physmap-versatile.c b/drivers/mtd/maps/physmap-versatile.c
index ad7cd9cfaee0..297a50957356 100644
--- a/drivers/mtd/maps/physmap-versatile.c
+++ b/drivers/mtd/maps/physmap-versatile.c
@@ -207,6 +207,7 @@ int of_flash_probe_versatile(struct platform_device *pdev,
 
 		versatile_flashprot = (enum versatile_flashprot)devid->data;
 		rmap = syscon_node_to_regmap(sysnp);
+		of_node_put(sysnp);
 		if (IS_ERR(rmap))
 			return PTR_ERR(rmap);
 
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] mtd: maps: Fix refcount leak in of_flash_probe_versatile
Date: Mon, 23 May 2022 18:02:05 +0400	[thread overview]
Message-ID: <20220523140205.48625-1-linmq006@gmail.com> (raw)

of_find_matching_node_and_match() 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>
---
 drivers/mtd/maps/physmap-versatile.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/maps/physmap-versatile.c b/drivers/mtd/maps/physmap-versatile.c
index ad7cd9cfaee0..297a50957356 100644
--- a/drivers/mtd/maps/physmap-versatile.c
+++ b/drivers/mtd/maps/physmap-versatile.c
@@ -207,6 +207,7 @@ int of_flash_probe_versatile(struct platform_device *pdev,
 
 		versatile_flashprot = (enum versatile_flashprot)devid->data;
 		rmap = syscon_node_to_regmap(sysnp);
+		of_node_put(sysnp);
 		if (IS_ERR(rmap))
 			return PTR_ERR(rmap);
 
-- 
2.25.1


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] mtd: maps: Fix refcount leak in of_flash_probe_versatile
Date: Mon, 23 May 2022 18:02:05 +0400	[thread overview]
Message-ID: <20220523140205.48625-1-linmq006@gmail.com> (raw)

of_find_matching_node_and_match() 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>
---
 drivers/mtd/maps/physmap-versatile.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/maps/physmap-versatile.c b/drivers/mtd/maps/physmap-versatile.c
index ad7cd9cfaee0..297a50957356 100644
--- a/drivers/mtd/maps/physmap-versatile.c
+++ b/drivers/mtd/maps/physmap-versatile.c
@@ -207,6 +207,7 @@ int of_flash_probe_versatile(struct platform_device *pdev,
 
 		versatile_flashprot = (enum versatile_flashprot)devid->data;
 		rmap = syscon_node_to_regmap(sysnp);
+		of_node_put(sysnp);
 		if (IS_ERR(rmap))
 			return PTR_ERR(rmap);
 
-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2022-05-23 14:02 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-23 14:02 Miaoqian Lin [this message]
2022-05-23 14:02 ` [PATCH] mtd: maps: Fix refcount leak in of_flash_probe_versatile Miaoqian Lin
2022-05-23 14:02 ` Miaoqian Lin
2022-05-24  7:25 ` Linus Walleij
2022-05-24  7:25   ` Linus Walleij
2022-05-24  7:25   ` Linus Walleij
2022-06-09 12:43 ` Miquel Raynal
2022-06-09 12:43   ` Miquel Raynal
2022-06-09 12:43   ` Miquel Raynal

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