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From: Miaoqian Lin <linmq006@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Fabien Dessenne <fabien.dessenne@foss.st.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Marek Vasut <marex@denx.de>, Miaoqian Lin <linmq006@gmail.com>,
	linux-gpio@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain
Date: Mon,  2 Jan 2023 12:24:56 +0400	[thread overview]
Message-ID: <20230102082503.3944927-1-linmq006@gmail.com> (raw)

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

Fixes: d86f4d71e42a ("pinctrl: stm32: check irq controller availability at probe")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/pinctrl/stm32/pinctrl-stm32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 1cddca506ad7..cb33a23ab0c1 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1382,6 +1382,7 @@ static struct irq_domain *stm32_pctrl_get_irq_domain(struct platform_device *pde
 		return ERR_PTR(-ENXIO);
 
 	domain = irq_find_host(parent);
+	of_node_put(parent);
 	if (!domain)
 		/* domain not registered yet */
 		return ERR_PTR(-EPROBE_DEFER);
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Fabien Dessenne <fabien.dessenne@foss.st.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Marek Vasut <marex@denx.de>, Miaoqian Lin <linmq006@gmail.com>,
	linux-gpio@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain
Date: Mon,  2 Jan 2023 12:24:56 +0400	[thread overview]
Message-ID: <20230102082503.3944927-1-linmq006@gmail.com> (raw)

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

Fixes: d86f4d71e42a ("pinctrl: stm32: check irq controller availability at probe")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/pinctrl/stm32/pinctrl-stm32.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 1cddca506ad7..cb33a23ab0c1 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -1382,6 +1382,7 @@ static struct irq_domain *stm32_pctrl_get_irq_domain(struct platform_device *pde
 		return ERR_PTR(-ENXIO);
 
 	domain = irq_find_host(parent);
+	of_node_put(parent);
 	if (!domain)
 		/* domain not registered yet */
 		return ERR_PTR(-EPROBE_DEFER);
-- 
2.25.1


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             reply	other threads:[~2023-01-02  8:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-02  8:24 Miaoqian Lin [this message]
2023-01-02  8:24 ` [PATCH] pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain Miaoqian Lin
2023-01-09 14:13 ` Linus Walleij
2023-01-09 14:13   ` Linus Walleij

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