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authorLukasz Majewski <l.majewski@samsung.com>2014-12-08 18:04:18 +0100
committerKevin Hilman <khilman@linaro.org>2015-06-05 15:42:29 -0700
commitdc6e76d89a3168eec3c958323ac5a0dff64a753b (patch)
tree261a98dfe7223116c828f661378e7986dfae3766
parentd41ffd8d16d48207d5e27531f96f5d73768420a3 (diff)
downloadlinux-linaro-stable-dc6e76d89a3168eec3c958323ac5a0dff64a753b.tar.gz
thermal: of: Extend of-thermal.c to provide check if trip point is valid
This patch extends the of-thermal.c to provide check if trip point is valid. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> (cherry picked from commit a9bf2cc49d9030e374edb9cc0389512a1a1c357e) Signed-off-by: Kevin Hilman <khilman@linaro.org>
-rw-r--r--drivers/thermal/of-thermal.c21
-rw-r--r--drivers/thermal/thermal_core.h6
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 7facd23b1d9b..87b9cfe28eb8 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -133,6 +133,27 @@ int of_thermal_get_ntrips(struct thermal_zone_device *tz)
}
EXPORT_SYMBOL_GPL(of_thermal_get_ntrips);
+/**
+ * of_thermal_is_trip_valid - function to check if trip point is valid
+ *
+ * @tz: pointer to a thermal zone
+ * @trip: trip point to evaluate
+ *
+ * This function is responsible for checking if passed trip point is valid
+ *
+ * Return: true if trip point is valid, false otherwise
+ */
+bool of_thermal_is_trip_valid(struct thermal_zone_device *tz, int trip)
+{
+ struct __thermal_zone *data = tz->devdata;
+
+ if (!data || trip >= data->ntrips || trip < 0)
+ return false;
+
+ return true;
+}
+EXPORT_SYMBOL_GPL(of_thermal_is_trip_valid);
+
static int of_thermal_get_trend(struct thermal_zone_device *tz, int trip,
enum thermal_trend *trend)
{
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 1cc5041b7a26..58a0dfa44705 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -90,6 +90,7 @@ static inline void thermal_gov_user_space_unregister(void) {}
int of_parse_thermal_zones(void);
void of_thermal_destroy_zones(void);
int of_thermal_get_ntrips(struct thermal_zone_device *);
+bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
#else
static inline int of_parse_thermal_zones(void) { return 0; }
static inline void of_thermal_destroy_zones(void) { }
@@ -97,6 +98,11 @@ static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
{
return 0;
}
+static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
+ int trip)
+{
+ return 0;
+}
#endif
#endif /* __THERMAL_CORE_H__ */