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670dedbbd7
Backport cpufreq changes from upstream so that the MediaTek MT7988 SoC
can be supported.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit e4555d69a1)
44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
From 6a1bd7cf4ed7a1948f564aaf16d34b7352c0029b Mon Sep 17 00:00:00 2001
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From: Wan Jiabing <wanjiabing@vivo.com>
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Date: Tue, 10 May 2022 17:05:31 +0800
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Subject: [PATCH 12/21] cpufreq: mediatek: Fix potential deadlock problem in
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mtk_cpufreq_set_target
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Fix following coccichek error:
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./drivers/cpufreq/mediatek-cpufreq.c:199:2-8: preceding lock on line
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./drivers/cpufreq/mediatek-cpufreq.c:208:2-8: preceding lock on line
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mutex_lock is acquired but not released before return.
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Use 'goto out' to help releasing the mutex_lock.
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Fixes: c210063b40ac ("cpufreq: mediatek: Add opp notification support")
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Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
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Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
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Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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---
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drivers/cpufreq/mediatek-cpufreq.c | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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--- a/drivers/cpufreq/mediatek-cpufreq.c
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+++ b/drivers/cpufreq/mediatek-cpufreq.c
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@@ -196,7 +196,8 @@ static int mtk_cpufreq_set_target(struct
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if (pre_vproc < 0) {
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dev_err(cpu_dev, "invalid Vproc value: %d\n", pre_vproc);
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- return pre_vproc;
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+ ret = pre_vproc;
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+ goto out;
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}
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freq_hz = freq_table[index].frequency * 1000;
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@@ -205,7 +206,8 @@ static int mtk_cpufreq_set_target(struct
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if (IS_ERR(opp)) {
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dev_err(cpu_dev, "cpu%d: failed to find OPP for %ld\n",
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policy->cpu, freq_hz);
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- return PTR_ERR(opp);
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+ ret = PTR_ERR(opp);
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+ goto out;
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}
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vproc = dev_pm_opp_get_voltage(opp);
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dev_pm_opp_put(opp);
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