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

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Date:   Mon,  2 Jan 2023 12:28:10 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Tsahee Zidenberg <tsahee@...apurnalabs.com>,
        Antoine Tenart <atenart@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] 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>
---
 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 5ddb8e578ac6..fc1ef7de3797 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;
-- 
2.25.1