6.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jinjie Ruan <ruanjinjie@xxxxxxxxxx> commit 172bf5ed04cb6c9e66d58de003938ed5c8756570 upstream. mtk_cpufreq_get_cpu_power() return 0 if the policy is NULL. Then in em_create_perf_table(), the later zero check for power is not invalid as power is uninitialized. As Lukasz suggested, it must return -EINVAL when the 'policy' is not found. So return -EINVAL to fix it. Cc: stable@xxxxxxxxxxxxxxx Fixes: 4855e26bcf4d ("cpufreq: mediatek-hw: Add support for CPUFREQ HW") Reviewed-by: Lukasz Luba <lukasz.luba@xxxxxxx> Suggested-by: Lukasz Luba <lukasz.luba@xxxxxxx> Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/cpufreq/mediatek-cpufreq-hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/cpufreq/mediatek-cpufreq-hw.c +++ b/drivers/cpufreq/mediatek-cpufreq-hw.c @@ -62,7 +62,7 @@ mtk_cpufreq_get_cpu_power(struct device policy = cpufreq_cpu_get_raw(cpu_dev->id); if (!policy) - return 0; + return -EINVAL; data = policy->driver_data;