linux-kernel - Re: [PATCH 5/8] thermal/drivers/int3400: Use thermal zone device wrappers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 3 Jul 2023 12:49:42 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     linux-pm@...r.kernel.org, thierry.reding@...il.com,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        "Lee, Chun-Yi" <joeyli.kernel@...il.com>,
        ye xingchen <ye.xingchen@....com.cn>,
        open list <linux-kernel@...r.kernel.org>, rafael@...nel.org
Subject: Re: [PATCH 5/8] thermal/drivers/int3400: Use thermal zone device
 wrappers


Hi Srinivas,

do you agree with the changes in patches 5 and 6 ?

Thanks

   -- Daniel


On 25/05/2023 16:01, Daniel Lezcano wrote:
> The driver is accessing the thermal zone device structure but the
> accessors are already existing and we want to consolidate the thermal
> core code by preventing accesses to the internals from the drivers.
> 
> Let's use these accessors.
> 
> On the other side, the code is getting directly the temperature from
> tz->temperature, but the temperature is a faked on, so we can replace
> this access by the fake temp and remove the thermal zone device
> structure access.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> ---
>   .../thermal/intel/int340x_thermal/int3400_thermal.c  | 12 ++++++++----
>   1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index 810231b59dcd..66e34241b33a 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -15,6 +15,7 @@
>   #define INT3400_THERMAL_TABLE_CHANGED 0x83
>   #define INT3400_ODVP_CHANGED 0x88
>   #define INT3400_KEEP_ALIVE 0xA0
> +#define INT3400_FAKE_TEMP (20 * 1000) /* faked temp sensor with 20C */
>   
>   enum int3400_thermal_uuid {
>   	INT3400_THERMAL_ACTIVE = 0,
> @@ -453,6 +454,7 @@ static void int3400_notify(acpi_handle handle,
>   			void *data)
>   {
>   	struct int3400_thermal_priv *priv = data;
> +	struct device *dev;
>   	char *thermal_prop[5];
>   	int therm_event;
>   
> @@ -475,12 +477,14 @@ static void int3400_notify(acpi_handle handle,
>   		return;
>   	}
>   
> -	thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", priv->thermal->type);
> -	thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", priv->thermal->temperature);
> +	dev = thermal_zone_device(priv->thermal);
> +	
> +	thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", thermal_zone_device_type(priv->thermal));
> +	thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", INT3400_FAKE_TEMP);
>   	thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
>   	thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", therm_event);
>   	thermal_prop[4] = NULL;
> -	kobject_uevent_env(&priv->thermal->device.kobj, KOBJ_CHANGE, thermal_prop);
> +	kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, thermal_prop);
>   	kfree(thermal_prop[0]);
>   	kfree(thermal_prop[1]);
>   	kfree(thermal_prop[2]);
> @@ -490,7 +494,7 @@ static void int3400_notify(acpi_handle handle,
>   static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
>   			int *temp)
>   {
> -	*temp = 20 * 1000; /* faked temp sensor with 20C */
> +	*temp = INT3400_FAKE_TEMP;
>   	return 0;
>   }
>   

-- 
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog