thermal: Constify the trip argument of the .get_trend() zone callback

From: Rafael J. Wysocki <[email protected]>

Add 'const' to the definition of the 'trip' argument of the .get_trend() thermal zone callback to indicate that the trip point passed to it should not be modified by it and adjust the callback functions implementing it, thermal_get_trend() in the ACPI thermal driver and __ti_thermal_get_trend(), accordingly.

No intentional functional impact.

Signed-off-by Rafael J. Wysocki <[email protected]>

---
 drivers/acpi/thermal.c                             |    2 +-
 drivers/thermal/ti-soc-thermal/ti-thermal-common.c |    3 ++-
 include/linux/thermal.h                            |    4 ++--
 3 files changed, 5 insertions(+), 4 deletions(-)

Index: linux-pm/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
===================================================================

drivers/thermal/ti-soc-thermal/ti-thermal-common.c +2 -1

@@ -110,7 +110,8 @@ static inline int __ti_thermal_get_temp(
 }
 
 static int __ti_thermal_get_trend(struct thermal_zone_device *tz,
-				  struct thermal_trip *trip, enum thermal_trend *trend)
+				  const struct thermal_trip *trip,
+				  enum thermal_trend *trend)
 {
 	struct ti_thermal_data *data = thermal_zone_device_priv(tz);
 	struct ti_bandgap *bgp;

Index: linux-pm/include/linux/thermal.h
===================================================================

include/linux/thermal.h +2 -2

@@ -80,8 +80,8 @@ struct thermal_zone_device_ops {
 	int (*set_trip_hyst) (struct thermal_zone_device *, int, int);
 	int (*get_crit_temp) (struct thermal_zone_device *, int *);
 	int (*set_emul_temp) (struct thermal_zone_device *, int);
-	int (*get_trend) (struct thermal_zone_device *, struct thermal_trip *,
-			  enum thermal_trend *);
+	int (*get_trend) (struct thermal_zone_device *,
+			  const struct thermal_trip *, enum thermal_trend *);
 	void (*hot)(struct thermal_zone_device *);
 	void (*critical)(struct thermal_zone_device *);
 };

Index: linux-pm/drivers/acpi/thermal.c
===================================================================