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xtensa: Fix refcount leak bug in time.c

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commit a0117dc956 upstream.

In calibrate_ccount(), of_find_compatible_node() will return a node
pointer with refcount incremented. We should use of_node_put() when
it is not used anymore.

Cc: stable@vger.kernel.org
Signed-off-by: Liang He <windhl@126.com>
Message-Id: <20220617124432.4049006-1-windhl@126.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liang He 2022-06-17 20:44:32 +08:00 • committed by Greg Kroah-Hartman
commit af0ff2da01
1 changed files with 1 additions and 0 deletions
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arch/xtensa/kernel/time.c
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@ -154,6 +154,7 @@ static void __init calibrate_ccount(void)
cpu = of_find_compatible_node(NULL, NULL, "cdns,xtensa-cpu"); cpu = of_find_compatible_node(NULL, NULL, "cdns,xtensa-cpu");
if (cpu) { if (cpu) {
clk = of_clk_get(cpu, 0); clk = of_clk_get(cpu, 0);
of_node_put(cpu);
if (!IS_ERR(clk)) { if (!IS_ERR(clk)) {
ccount_freq = clk_get_rate(clk); ccount_freq = clk_get_rate(clk);
return; return;