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arm64: cpu_ops: fix a leaked reference by adding missing of_node_put

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[ Upstream commit 92606ec928 ]

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

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 <wen.yang99@zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wen Yang
2019-03-05 19:34:05 +08:00
committed by Greg Kroah-Hartman
parent 5dce30bb63
commit 5399fba1d5
1 changed files with 1 additions and 0 deletions
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arch/arm64/kernel/cpu_ops.c
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@@ -85,6 +85,7 @@ static const char *__init cpu_read_enable_method(int cpu)
pr_err("%pOF: missing enable-method property\n",
dn);
}
of_node_put(dn);
} else {
enable_method = acpi_get_enable_method(cpu);
if (!enable_method) {