Messages in this thread | | | Date | Wed, 17 Apr 2013 15:10:38 -0400 | From | Eduardo Valentin <> | Subject | Re: [PATCHv3 2/3] thermal: expose thermal_zone_get_temp API |
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On 15-04-2013 09:22, Eduardo Valentin wrote: > On 14-04-2013 21:43, Zhang Rui wrote: >> On Fri, 2013-04-05 at 08:32 -0400, Eduardo Valentin wrote: >>> This patch exports the thermal_zone_get_temp API so that driver >>> writers can fetch temperature of thermal zones managed by other >>> drivers. >>> >>> Acked-by: Durgadoss R <durgadoss.r@intel.com> >>> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com> >> >> refreshed the patch to modify drivers/thermal/thermal_core.c instead of >> drivers/thermal/thermal_sys.c and applied to thermal -next. > > Thanks!
Just a gentle reminder, this one does not seam to be applied to thermal/next. > >> >> thanks, >> rui >> >>> --- >>> drivers/thermal/thermal_sys.c | 20 +++++++++++++++++--- >>> include/linux/thermal.h | 1 + >>> 2 files changed, 18 insertions(+), 3 deletions(-) >>> >>> diff --git a/drivers/thermal/thermal_sys.c >>> b/drivers/thermal/thermal_sys.c >>> index e9b636b..83bfa0d 100644 >>> --- a/drivers/thermal/thermal_sys.c >>> +++ b/drivers/thermal/thermal_sys.c >>> @@ -371,16 +371,28 @@ static void handle_thermal_trip(struct >>> thermal_zone_device *tz, int trip) >>> monitor_thermal_zone(tz); >>> } >>> >>> -static int thermal_zone_get_temp(struct thermal_zone_device *tz, >>> - unsigned long *temp) >>> +/** >>> + * thermal_zone_get_temp() - returns its the temperature of thermal >>> zone >>> + * @tz: a valid pointer to a struct thermal_zone_device >>> + * @temp: a valid pointer to where to store the resulting temperature. >>> + * >>> + * When a valid thermal zone reference is passed, it will fetch its >>> + * temperature and fill @temp. >>> + * >>> + * Return: On success returns 0, an error code otherwise >>> + */ >>> +int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned >>> long *temp) >>> { >>> - int ret = 0; >>> + int ret = -EINVAL; >>> #ifdef CONFIG_THERMAL_EMULATION >>> int count; >>> unsigned long crit_temp = -1UL; >>> enum thermal_trip_type type; >>> #endif >>> >>> + if (IS_ERR_OR_NULL(tz)) >>> + goto exit; >>> + >>> mutex_lock(&tz->lock); >>> >>> ret = tz->ops->get_temp(tz, temp); >>> @@ -404,8 +416,10 @@ static int thermal_zone_get_temp(struct >>> thermal_zone_device *tz, >>> skip_emul: >>> #endif >>> mutex_unlock(&tz->lock); >>> +exit: >>> return ret; >>> } >>> +EXPORT_SYMBOL_GPL(thermal_zone_get_temp); >>> >>> static void update_temperature(struct thermal_zone_device *tz) >>> { >>> diff --git a/include/linux/thermal.h b/include/linux/thermal.h >>> index 0cf9eb5..8eea86c 100644 >>> --- a/include/linux/thermal.h >>> +++ b/include/linux/thermal.h >>> @@ -238,6 +238,7 @@ struct thermal_cooling_device >>> *thermal_cooling_device_register(char *, void *, >>> const struct thermal_cooling_device_ops *); >>> void thermal_cooling_device_unregister(struct >>> thermal_cooling_device *); >>> struct thermal_zone_device *thermal_zone_get_zone_by_name(const >>> char *name); >>> +int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned >>> long *temp); >>> >>> int thermal_zone_trend_get(struct thermal_zone_device *, int); >>> struct thermal_instance *thermal_instance_get(struct >>> thermal_zone_device *, >> >> >> >> > > >
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