diff options
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9528bd577365..418522f88f73 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1484,6 +1484,18 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) { int ret; + struct cpufreq_governor *gov = CPUFREQ_PERFORMANCE_GOVERNOR; + + if (policy->governor->max_transition_latency && + policy->cpuinfo.transition_latency > + policy->governor->max_transition_latency) { + printk(KERN_WARNING "%s governor failed, too long" + " transition latency of HW, fallback" + " to %s governor\n", + policy->governor->name, + gov->name); + policy->governor = gov; + } if (!try_module_get(policy->governor->owner)) return -EINVAL; |