diff options
Diffstat (limited to 'kernel/power/energy_model.c')
| -rw-r--r-- | kernel/power/energy_model.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index b686ac0345bd9..9e1c9aa399ea9 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -612,6 +612,17 @@ int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states, else if (cb->get_cost) flags |= EM_PERF_DOMAIN_ARTIFICIAL; + /* + * EM only supports uW (exception is artificial EM). + * Therefore, check and force the drivers to provide + * power in uW. + */ + if (!microwatts && !(flags & EM_PERF_DOMAIN_ARTIFICIAL)) { + dev_err(dev, "EM: only supports uW power values\n"); + ret = -EINVAL; + goto unlock; + } + ret = em_create_pd(dev, nr_states, cb, cpus, flags); if (ret) goto unlock; |