diff options
Diffstat (limited to 'drivers/thermal/devfreq_cooling.c')
| -rw-r--r-- | drivers/thermal/devfreq_cooling.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c index 4310cb342a9f..b04dcbbf721a 100644 --- a/drivers/thermal/devfreq_cooling.c +++ b/drivers/thermal/devfreq_cooling.c @@ -358,6 +358,7 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df, struct thermal_cooling_device *cdev; struct device *dev = df->dev.parent; struct devfreq_cooling_device *dfc; + struct em_perf_domain *em; char *name; int err, num_opps; @@ -367,8 +368,9 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df, dfc->devfreq = df; - dfc->em_pd = em_pd_get(dev); - if (dfc->em_pd) { + em = em_pd_get(dev); + if (em && !em_is_artificial(em)) { + dfc->em_pd = em; devfreq_cooling_ops.get_requested_power = devfreq_cooling_get_requested_power; devfreq_cooling_ops.state2power = devfreq_cooling_state2power; @@ -379,7 +381,7 @@ of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df, num_opps = em_pd_nr_perf_states(dfc->em_pd); } else { /* Backward compatibility for drivers which do not use IPA */ - dev_dbg(dev, "missing EM for cooling device\n"); + dev_dbg(dev, "missing proper EM for cooling device\n"); num_opps = dev_pm_opp_get_opp_count(dev); |