diff options
Diffstat (limited to 'drivers/cpuidle/lpm-levels.c')
| -rw-r--r-- | drivers/cpuidle/lpm-levels.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/cpuidle/lpm-levels.c b/drivers/cpuidle/lpm-levels.c index 1eaef20e5ed5..dca59eadc6c2 100644 --- a/drivers/cpuidle/lpm-levels.c +++ b/drivers/cpuidle/lpm-levels.c @@ -187,7 +187,7 @@ static uint32_t least_cluster_latency(struct lpm_cluster *cluster, uint32_t latency = 0; int i; - if (!cluster->list.next) { + if (list_empty(&cluster->list)) { for (i = 0; i < cluster->nlevels; i++) { level = &cluster->levels[i]; pwr_params = &level->pwr; @@ -691,7 +691,7 @@ static void update_history(struct cpuidle_device *dev, int idx); static int cpu_power_select(struct cpuidle_device *dev, struct lpm_cpu *cpu) { - int best_level = -1; + int best_level = 0; uint32_t latency_us = pm_qos_request_for_cpu(PM_QOS_CPU_DMA_LATENCY, dev->cpu); s64 sleep_us = ktime_to_us(tick_nohz_get_sleep_length()); @@ -705,8 +705,6 @@ static int cpu_power_select(struct cpuidle_device *dev, uint32_t *min_residency = get_per_cpu_min_residency(dev->cpu); uint32_t *max_residency = get_per_cpu_max_residency(dev->cpu); - if (!cpu) - return -EINVAL; if ((sleep_disabled && !cpu_isolated(dev->cpu)) || sleep_us < 0) return 0; @@ -1536,17 +1534,11 @@ static int lpm_cpuidle_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) { struct lpm_cluster *cluster = per_cpu(cpu_cluster, dev->cpu); - int idx; if (!cluster) return 0; - idx = cpu_power_select(dev, cluster->cpu); - - if (idx < 0) - return -EPERM; - - return idx; + return cpu_power_select(dev, cluster->cpu); } static void update_history(struct cpuidle_device *dev, int idx) @@ -1591,9 +1583,6 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev, int64_t start_time = ktime_to_ns(ktime_get()), end_time; struct power_params *pwr_params; - if (idx < 0) - return -EINVAL; - pwr_params = &cluster->cpu->levels[idx].pwr; sched_set_cpu_cstate(smp_processor_id(), idx + 1, pwr_params->energy_overhead, pwr_params->latency_us); |