linux-kernel - [irqchip: irq/irqchip-next] irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain

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Date:   Sun, 05 Feb 2023 11:29:52 -0000
From:   "irqchip-bot for Miaoqian Lin" <tip-bot2@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Miaoqian Lin <linmq006@...il.com>, Marc Zyngier <maz@...nel.org>,
        tglx@...utronix.de
Subject: [irqchip: irq/irqchip-next] irqchip/ti-sci: Fix refcount leak in
 ti_sci_intr_irq_domain_probe

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     02298b7bae12936ca313975b02e7f98b06670d37
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/02298b7bae12936ca313975b02e7f98b06670d37
Author:        Miaoqian Lin <linmq006@...il.com>
AuthorDate:    Mon, 02 Jan 2023 12:56:10 +04:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Sun, 05 Feb 2023 11:11:24 

irqchip/ti-sci: Fix refcount leak in ti_sci_intr_irq_domain_probe

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: cd844b0715ce ("irqchip/ti-sci-intr: Add support for Interrupt Router driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20230102085611.3955984-1-linmq006@gmail.com
---
 drivers/irqchip/irq-ti-sci-intr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-ti-sci-intr.c b/drivers/irqchip/irq-ti-sci-intr.c
index fe8fad2..020ddf2 100644
--- a/drivers/irqchip/irq-ti-sci-intr.c
+++ b/drivers/irqchip/irq-ti-sci-intr.c
@@ -236,6 +236,7 @@ static int ti_sci_intr_irq_domain_probe(struct platform_device *pdev)
 	}
 
 	parent_domain = irq_find_host(parent_node);
+	of_node_put(parent_node);
 	if (!parent_domain) {
 		dev_err(dev, "Failed to find IRQ parent domain\n");
 		return -ENODEV;