linux-kernel - [irqchip: irq/irqchip-next] irqchip/alpine-msi: Fix refcount leak in alpine_msix_init

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Date:   Sun, 05 Feb 2023 11:29:53 -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/alpine-msi: Fix refcount leak in
 alpine_msix_init_domains

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

Commit-ID:     071d068b89e95d1b078aa6bbcb9d0961b77d6aa1
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/071d068b89e95d1b078aa6bbcb9d0961b77d6aa1
Author:        Miaoqian Lin <linmq006@...il.com>
AuthorDate:    Mon, 02 Jan 2023 12:28:10 +04:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Sun, 05 Feb 2023 11:11:24 

irqchip/alpine-msi: Fix refcount leak in alpine_msix_init_domains

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: e6b78f2c3e14 ("irqchip: Add the Alpine MSIX interrupt controller")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20230102082811.3947760-1-linmq006@gmail.com
---
 drivers/irqchip/irq-alpine-msi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c
index 5ddb8e5..fc1ef7d 100644
--- a/drivers/irqchip/irq-alpine-msi.c
+++ b/drivers/irqchip/irq-alpine-msi.c
@@ -199,6 +199,7 @@ static int alpine_msix_init_domains(struct alpine_msix_data *priv,
 	}
 
 	gic_domain = irq_find_host(gic_node);
+	of_node_put(gic_node);
 	if (!gic_domain) {
 		pr_err("Failed to find the GIC domain\n");
 		return -ENXIO;