diff options
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 11 | ||||
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 6 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index f56147a1daed..fde97d6e31d6 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -211,6 +211,17 @@ static int cpufreq_init(struct cpufreq_policy *policy) /* OPPs might be populated at runtime, don't check for error here */ of_init_opp_table(cpu_dev); + /* + * But we need OPP table to function so if it is not there let's + * give platform code chance to provide it for us. + */ + ret = dev_pm_opp_get_opp_count(cpu_dev); + if (ret <= 0) { + pr_debug("OPP table is not ready, deferring probe\n"); + ret = -EPROBE_DEFER; + goto out_free_opp; + } + priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) { ret = -ENOMEM; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index a09a29c312a9..46bed4f81cde 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2028,6 +2028,12 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, /* Don't start any governor operations if we are entering suspend */ if (cpufreq_suspended) return 0; + /* + * Governor might not be initiated here if ACPI _PPC changed + * notification happened, so check it. + */ + if (!policy->governor) + return -EINVAL; if (policy->governor->max_transition_latency && policy->cpuinfo.transition_latency > |