[CPUFREQ] state info wrong after resume

Sometimes old_index != stat->last_index, see cpufreq_update_policy, bios can
change cpu setting in resume.  In my test, after resume cpu is in lowest
speed, but the stat info shows cpu is in full speed.  This patch makes the
stat info correct after a resume.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>

diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index ef09e069433b280c0dc58e0a51e6d0713a718a70..ae70d63a8b26eabb2b02d8c2ea28721fcd934b2a 100644 (file)
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -288,7 +288,7 @@ cpufreq_stat_notifier_trans (struct notifier_block *nb, unsigned long val,
        if (!stat)
                return 0;
 
-       old_index = freq_table_get_index(stat, freq->old);
+       old_index = stat->last_index;
        new_index = freq_table_get_index(stat, freq->new);
 
        cpufreq_stats_update(freq->cpu);