linux-kernel - [PATCH] cpufreq: zynq: Fix refcount leak in zynq_get

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Message-Id: <20220605082807.21526-1-linmq006@gmail.com>
Date:   Sun,  5 Jun 2022 12:28:07 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Russell King <linux@...linux.org.uk>,
        Michal Simek <michal.simek@...inx.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] cpufreq: zynq: Fix refcount leak in zynq_get_revision

of_find_compatible_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 00f7dc636366 ("ARM: zynq: Add support for SOC_BUS")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 arch/arm/mach-zynq/common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index e1ca6a5732d2..15e8a321a713 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -77,6 +77,7 @@ static int __init zynq_get_revision(void)
 	}
 
 	zynq_devcfg_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!zynq_devcfg_base) {
 		pr_err("%s: Unable to map I/O memory\n", __func__);
 		return -1;
-- 
2.25.1