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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-17 21:13:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-17 21:13:43 -0700 |
| commit | 2f48802e4330bb4d65d530ed9be78e8e55374577 (patch) | |
| tree | 7e133d298dc12ea39031f7f15123c1e3fe3a272a | |
| parent | 95559f2ca1eb5bc9417cb557688855f2d478e027 (diff) | |
| parent | fbb5b89eabea5ae7d621b7861863159560d8faa4 (diff) | |
| download | linux-2f48802e4330bb4d65d530ed9be78e8e55374577.tar.bz2 | |
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] powernow-k8: Don't try to transition if the pstate is incorrect
[CPUFREQ] powernow-k8: Don't notify of successful transition if we failed (vid case).
[CPUFREQ] Don't set stat->last_index to -1 if the pol->cur has incorrect value.
| -rw-r--r-- | drivers/cpufreq/cpufreq_stats.c | 8 | ||||
| -rw-r--r-- | drivers/cpufreq/powernow-k8.c | 6 |
2 files changed, 10 insertions, 4 deletions
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 853f92d23ddb..faf7c5217848 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -298,11 +298,13 @@ static int cpufreq_stat_notifier_trans(struct notifier_block *nb, old_index = stat->last_index; new_index = freq_table_get_index(stat, freq->new); - cpufreq_stats_update(freq->cpu); - if (old_index == new_index) + /* We can't do stat->time_in_state[-1]= .. */ + if (old_index == -1 || new_index == -1) return 0; - if (old_index == -1 || new_index == -1) + cpufreq_stats_update(freq->cpu); + + if (old_index == new_index) return 0; spin_lock(&cpufreq_stats_lock); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 83479b6fb9a1..bce576d7478e 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1079,6 +1079,9 @@ static int transition_frequency_fidvid(struct powernow_k8_data *data, } res = transition_fid_vid(data, fid, vid); + if (res) + return res; + freqs.new = find_khz_freq_from_fid(data->currfid); for_each_cpu(i, data->available_cores) { @@ -1101,7 +1104,8 @@ static int transition_frequency_pstate(struct powernow_k8_data *data, /* get MSR index for hardware pstate transition */ pstate = index & HW_PSTATE_MASK; if (pstate > data->max_hw_pstate) - return 0; + return -EINVAL; + freqs.old = find_khz_freq_from_pstate(data->powernow_table, data->currpstate); freqs.new = find_khz_freq_from_pstate(data->powernow_table, pstate); |