> > Prior to that, the min/max_freq of the devfreq device are always zero > > before the user changes the min/max_freq through sysfs entries. > > It might make the confusion for the min/max_freq. > > > > This patch initializes the available min/max_freq by using the OPP > > during adding the devfreq device. > > > > Signed-off-by: Chanwoo Choi <[email protected]> > > --- > > drivers/devfreq/devfreq.c | 43 +++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 43 insertions(+) > > > > diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c > > index a1c4ee818614..ae8717a6eee1 100644 > > --- a/drivers/devfreq/devfreq.c > > +++ b/drivers/devfreq/devfreq.c > > diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c > > index a1c4ee818614..ae8717a6eee1 100644 > > --- a/drivers/devfreq/devfreq.c > > +++ b/drivers/devfreq/devfreq.c > > @@ -69,6 +69,34 @@ static struct devfreq *find_device_devfreq(struct device > > *dev) > > return ERR_PTR(-ENODEV); > > } > > > > +static unsigned long find_available_min_freq(struct devfreq *devfreq) > > +{ > > + struct dev_pm_opp *opp; > > + unsigned long min_freq = 0; > > + > > + opp = dev_pm_opp_find_freq_ceil(devfreq->dev.parent, &min_freq); > > When min_freq is 0, dev_pm_opp_find_freq_ceil will return ERR_PTR(-EINVAL); > > --- from drivers/base/power/opp/core.c ------ > struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, > unsigned long *freq) > { > struct opp_table *opp_table; > struct dev_pm_opp *opp; > > if (!dev || !freq) { > dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, > freq); > return ERR_PTR(-EINVAL); > } > ---------------------------------------------
Sorry, please never mind. My Bad. Your code had no such issues. So, I'm adding: Acked-by: MyungJoo Ham <[email protected]> > > Cheers, > MyungJoo >
