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Date:   Fri, 1 Mar 2019 16:56:55 +0800
From:   Wen Yang <>
        Wen Yang <>
Subject: [PATCH 14/15] arm64: cpu_ops: fix a leaked reference by addingmissing of_node_put

The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last

Detected by coccinelle with the following warnings:
./arch/arm64/kernel/cpu_ops.c:102:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 69, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <>
Cc: Catalin Marinas <>
Cc: Will Deacon <>
 arch/arm64/kernel/cpu_ops.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c
index ea00124..00f8b86 100644
--- a/arch/arm64/kernel/cpu_ops.c
+++ b/arch/arm64/kernel/cpu_ops.c
@@ -85,6 +85,7 @@ static const char *__init cpu_read_enable_method(int cpu)
 				pr_err("%pOF: missing enable-method property\n",
+		of_node_put(dn);
 	} else {
 		enable_method = acpi_get_enable_method(cpu);
 		if (!enable_method) {

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