linux-kernel - [PATCH] ARM: zynq: Fix refcount leak in zynq_early_slcr

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Message-ID: <20221129140544.41293-1-linqiheng@huawei.com>
Date:   Tue, 29 Nov 2022 22:05:44 +0800
From:   Qiheng Lin <linqiheng@...wei.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     <michal.simek@...inx.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Qiheng Lin <linqiheng@...wei.com>
Subject: [PATCH] ARM: zynq: Fix refcount leak in zynq_early_slcr_init

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

Fixes: 3329659df030 ("ARM: zynq: Simplify SLCR initialization")
Signed-off-by: Qiheng Lin <linqiheng@...wei.com>
---
 arch/arm/mach-zynq/slcr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-zynq/slcr.c b/arch/arm/mach-zynq/slcr.c
index 37707614885a..9765b3f4c2fc 100644
--- a/arch/arm/mach-zynq/slcr.c
+++ b/arch/arm/mach-zynq/slcr.c
@@ -213,6 +213,7 @@ int __init zynq_early_slcr_init(void)
 	zynq_slcr_regmap = syscon_regmap_lookup_by_compatible("xlnx,zynq-slcr");
 	if (IS_ERR(zynq_slcr_regmap)) {
 		pr_err("%s: failed to find zynq-slcr\n", __func__);
+		of_node_put(np);
 		return -ENODEV;
 	}

--
2.32.0