diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.15/350-12-cpufreq-mediatek-Fix-potential-deadlock-problem-in-m.patch')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/350-12-cpufreq-mediatek-Fix-potential-deadlock-problem-in-m.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/350-12-cpufreq-mediatek-Fix-potential-deadlock-problem-in-m.patch b/target/linux/mediatek/patches-5.15/350-12-cpufreq-mediatek-Fix-potential-deadlock-problem-in-m.patch new file mode 100644 index 0000000000..76bd795c00 --- /dev/null +++ b/target/linux/mediatek/patches-5.15/350-12-cpufreq-mediatek-Fix-potential-deadlock-problem-in-m.patch @@ -0,0 +1,43 @@ +From 6a1bd7cf4ed7a1948f564aaf16d34b7352c0029b Mon Sep 17 00:00:00 2001 +From: Wan Jiabing <wanjiabing@vivo.com> +Date: Tue, 10 May 2022 17:05:31 +0800 +Subject: [PATCH 12/21] 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> +--- + drivers/cpufreq/mediatek-cpufreq.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/drivers/cpufreq/mediatek-cpufreq.c ++++ b/drivers/cpufreq/mediatek-cpufreq.c +@@ -196,7 +196,8 @@ static int mtk_cpufreq_set_target(struct + + 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 + 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); |