[PATCH] PM: EM: Fix uninitialized power in em_create_perf_table

[Jinjie Ruan]

In em_create_perf_table(), power is uninitialized and passed the pointer
to active_power() hook, but the hook function may not assign it and
return 0, such as mtk_cpufreq_get_cpu_power(), so the later zero check for
power is not invalid, initialize power to zero to fix it.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7d9895c7fbfc ("PM / EM: introduce em_dev_register_perf_domain function")
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
---
 kernel/power/energy_model.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c
index 927cc55ba0b3..866a3e9c05b2 100644
--- a/kernel/power/energy_model.c
+++ b/kernel/power/energy_model.c
@@ -344,7 +344,7 @@ static int em_create_perf_table(struct device *dev, struct em_perf_domain *pd,
 				struct em_data_callback *cb,
 				unsigned long flags)
 {
-	unsigned long power, freq, prev_freq = 0;
+	unsigned long power = 0, freq, prev_freq = 0;
 	int nr_states = pd->nr_perf_states;
 	int i, ret;
 
-- 
2.34.1