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cpufreq: cpufreq_stats: prevent last_index = -1

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Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
This commit is contained in:
Huang, Tao
2015-03-21 15:54:17 +08:00
parent 39d5e26a3a
commit bb53d4bb3c
1 changed files with 4 additions and 4 deletions
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8
drivers/cpufreq/cpufreq_stats.c
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@@ -368,6 +368,10 @@ static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
spin_lock(&cpufreq_stats_lock);
stat->last_time = get_jiffies_64();
stat->last_index = freq_table_get_index(stat, policy->cur);
#ifdef CONFIG_ARCH_ROCKCHIP
if (stat->last_index == -1)
stat->last_index = 0;
#endif
spin_unlock(&cpufreq_stats_lock);
cpufreq_cpu_put(data);
return 0;
@@ -537,10 +541,6 @@ static int cpufreq_stat_notifier_trans(struct notifier_block *nb,
old_index = stat->last_index;
new_index = freq_table_get_index(stat, freq->new);
#ifdef CONFIG_ARCH_ROCKCHIP
if (old_index == -1)
stat->last_index = new_index;
#endif
/* We can't do stat->time_in_state[-1]= .. */
if (old_index == -1 || new_index == -1)
return 0;