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| author | Wan Jiabing <wanjiabing@vivo.com> | 2022-05-10 12:05:31 +0300 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2022-05-10 12:10:56 +0300 |
| commit | 85f5b3c437c927526ab2c4af962dceec08ae58c6 (patch) | |
| tree | 906d33216fe6f099cd6c0d58c63d25e492ddf41c /drivers/cpufreq | |
| parent | c210063b40acab74bb7262d2bfae557171884ff2 (diff) | |
| download | linux-85f5b3c437c927526ab2c4af962dceec08ae58c6.tar.xz | |
cpufreq: mediatek: Fix potential deadlock problem in mtk_cpufreq_set_target
Fix following coccichek error:
./drivers/cpufreq/mediatek-cpufreq.c:199:2-8: preceding lock on line
./drivers/cpufreq/mediatek-cpufreq.c:208:2-8: preceding lock on line
mutex_lock is acquired but not released before return.
Use 'goto out' to help releasing the mutex_lock.
Fixes: c210063b40ac ("cpufreq: mediatek: Add opp notification support")
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/mediatek-cpufreq.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 75bf21ddf61f..4c6d53c99d79 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -196,7 +196,8 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, if (pre_vproc < 0) { dev_err(cpu_dev, "invalid Vproc value: %d\n", pre_vproc); - return pre_vproc; + ret = pre_vproc; + goto out; } freq_hz = freq_table[index].frequency * 1000; @@ -205,7 +206,8 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy, if (IS_ERR(opp)) { dev_err(cpu_dev, "cpu%d: failed to find OPP for %ld\n", policy->cpu, freq_hz); - return PTR_ERR(opp); + ret = PTR_ERR(opp); + goto out; } vproc = dev_pm_opp_get_voltage(opp); dev_pm_opp_put(opp); |