linux-kernel - Re: [PATCH v1] thermal: Constify the trip argument of the .get

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Message-ID: <542d0b86-eb5d-cca5-3c8c-857976ca5adb@intel.com>
Date:   Fri, 8 Sep 2023 10:25:19 +0200
From:   "Wilczynski, Michal" <michal.wilczynski@...el.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>
CC:     Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Zhang Rui <rui.zhang@...el.com>, <linux-omap@...r.kernel.org>,
        Amit Kucheria <amitk@...nel.org>, Keerthy <j-keerthy@...com>
Subject: Re: [PATCH v1] thermal: Constify the trip argument of the
 .get_trend() zone callback



On 9/7/2023 8:18 PM, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> 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 <rafael.j.wysocki@...el.com>
> ---
>  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
> ===================================================================
> --- linux-pm.orig/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> +++ linux-pm/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> @@ -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
> ===================================================================
> --- linux-pm.orig/include/linux/thermal.h
> +++ linux-pm/include/linux/thermal.h
> @@ -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
> ===================================================================
> --- linux-pm.orig/drivers/acpi/thermal.c
> +++ linux-pm/drivers/acpi/thermal.c
> @@ -531,7 +531,7 @@ static int thermal_get_temp(struct therm
>  }
>  
>  static int thermal_get_trend(struct thermal_zone_device *thermal,
> -			     struct thermal_trip *trip,
> +			     const struct thermal_trip *trip,
>  			     enum thermal_trend *trend)
>  {
>  	struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
>

Looks good to me,
Reviewed-by: Michal Wilczynski <michal.wilczynski@...el.com>

>