diff options
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 6d8fd3b8dcb5..6b52ebe5a890 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -73,6 +73,11 @@ static inline bool has_target(void) return cpufreq_driver->target_index || cpufreq_driver->target; } +bool has_target_index(void) +{ + return !!cpufreq_driver->target_index; +} + /* internal prototypes */ static unsigned int __cpufreq_get(struct cpufreq_policy *policy); static int cpufreq_init_governor(struct cpufreq_policy *policy); @@ -725,9 +730,9 @@ static ssize_t store_##file_name \ unsigned long val; \ int ret; \ \ - ret = sscanf(buf, "%lu", &val); \ - if (ret != 1) \ - return -EINVAL; \ + ret = kstrtoul(buf, 0, &val); \ + if (ret) \ + return ret; \ \ ret = freq_qos_update_request(policy->object##_freq_req, val);\ return ret >= 0 ? count : ret; \ @@ -1727,7 +1732,7 @@ static unsigned int cpufreq_verify_current_freq(struct cpufreq_policy *policy, b * MHz. In such cases it is better to avoid getting into * unnecessary frequency updates. */ - if (abs(policy->cur - new_freq) < HZ_PER_MHZ) + if (abs(policy->cur - new_freq) < KHZ_PER_MHZ) return policy->cur; cpufreq_out_of_sync(policy, new_freq); @@ -2932,11 +2937,16 @@ EXPORT_SYMBOL_GPL(cpufreq_unregister_driver); static int __init cpufreq_core_init(void) { struct cpufreq_governor *gov = cpufreq_default_governor(); + struct device *dev_root; if (cpufreq_disabled()) return -ENODEV; - cpufreq_global_kobject = kobject_create_and_add("cpufreq", &cpu_subsys.dev_root->kobj); + dev_root = bus_get_dev_root(&cpu_subsys); + if (dev_root) { + cpufreq_global_kobject = kobject_create_and_add("cpufreq", &dev_root->kobj); + put_device(dev_root); + } BUG_ON(!cpufreq_global_kobject); if (!strlen(default_governor)) |