Re: [PATCH 09/13] thermal: of: always set sensor related callbacks

Sascha Hauer
2015-04-14T10:54:34Z

On Mon, Apr 06, 2015 at 08:25:23PM -0700, Eduardo Valentin wrote:
> On Thu, Mar 26, 2015 at 04:53:56PM +0100, Sascha Hauer wrote:
> > Now that the thermal core treats -ENOSYS like the callbacks were
> > not present at all we no longer have to overwrite the ops during
> > runtime but instead can always set them and return -ENOSYS if no
> > sensor is registered.
> >
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> > drivers/thermal/of-thermal.c | 18 +++++++++++-------
> > 1 file changed, 11 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> > index b39e22f..df14fdd 100644
> > --- a/drivers/thermal/of-thermal.c
> > +++ b/drivers/thermal/of-thermal.c
> > @@ -91,7 +91,7 @@ static int of_thermal_get_temp(struct thermal_zone_device *tz,
> > {
> > struct __thermal_zone *data = tz->devdata;
> >
> > - if (!data->ops->get_temp)
> > + if (!data->ops)
> > return -EINVAL;
> >
> > return data->ops->get_temp(data->sensor_data, temp);
> > @@ -178,7 +178,7 @@ static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
> > struct __thermal_zone *data = tz->devdata;
> >
> > if (!data->ops || !data->ops->set_emul_temp)
> > - return -EINVAL;
> > + return -ENOSYS;
> >
> > return data->ops->set_emul_temp(data->sensor_data, temp);
> > }
> > @@ -189,8 +189,8 @@ static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
> > struct __thermal_zone *data = tz->devdata;
> > int r;
> >
> > - if (!data->ops->get_trend)
> > - return -EINVAL;
> > + if (!data->ops || !data->ops->get_trend)
> > + return -ENOSYS;
> >
> > r = data->ops->get_trend(data->sensor_data, trip, trend);
> > if (r)
> > @@ -366,6 +366,10 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
> > }
> >
> > static struct thermal_zone_device_ops of_thermal_ops = {
> > + .get_temp = of_thermal_get_temp,
> > + .get_trend = of_thermal_get_trend,
> > + .set_emul_temp = of_thermal_set_emul_temp,
> > +
> > .get_mode = of_thermal_get_mode,
> > .set_mode = of_thermal_set_mode,
> >
> > @@ -399,13 +403,13 @@ thermal_zone_of_add_sensor(struct device_node *zone,
> > if (!ops)
> > return ERR_PTR(-EINVAL);
> >
> > + if (!ops->get_temp)
> > + return ERR_PTR(-EINVAL);
> > +
> > mutex_lock(&tzd->lock);
> > tz->ops = ops;
> > tz->sensor_data = data;
> >
> > - tzd->ops->get_temp = of_thermal_get_temp;
> > - tzd->ops->get_trend = of_thermal_get_trend;
> > - tzd->ops->set_emul_temp = of_thermal_set_emul_temp;
>
> You may want to update the thermal_zone_of_sensor_unregister too.

Ups, indeed. That hunk accidently went into a later patch.

Sascha

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