diff options
Diffstat (limited to 'drivers/opp/core.c')
| -rw-r--r-- | drivers/opp/core.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 7290168ec806..4c82ee20ceb7 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -227,16 +227,24 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_level); unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp, unsigned int index) { + struct opp_table *opp_table = opp->opp_table; + if (IS_ERR_OR_NULL(opp) || !opp->available || - index >= opp->opp_table->required_opp_count) { + index >= opp_table->required_opp_count) { pr_err("%s: Invalid parameters\n", __func__); return 0; } /* required-opps not fully initialized yet */ - if (lazy_linking_pending(opp->opp_table)) + if (lazy_linking_pending(opp_table)) return 0; + /* The required OPP table must belong to a genpd */ + if (unlikely(!opp_table->required_opp_tables[index]->is_genpd)) { + pr_err("%s: Performance state is only valid for genpds.\n", __func__); + return 0; + } + return opp->required_opps[index]->pstate; } EXPORT_SYMBOL_GPL(dev_pm_opp_get_required_pstate); @@ -2696,6 +2704,12 @@ int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, if (!src_table || !src_table->required_opp_count) return pstate; + /* Both OPP tables must belong to genpds */ + if (unlikely(!src_table->is_genpd || !dst_table->is_genpd)) { + pr_err("%s: Performance state is only valid for genpds.\n", __func__); + return -EINVAL; + } + /* required-opps not fully initialized yet */ if (lazy_linking_pending(src_table)) return -EBUSY; |