[PATCH] thermal/drivers/tegra: Fix crash when getting critical temp

[PATCH] thermal/drivers/tegra: Fix crash when getting critical temp

[Jon Hunter]

Commit 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
removed the function of_thermal_get_crit_temp() and this is causing a
NULL pointer deference crash when attempting to call the 'get_crit_temp'
function pointer because this function pointer is no longer initialised.
Fix this by replacing the call to the 'get_crit_temp' function pointer
with a call to the function thermal_zone_get_crit_temp() instead.

Fixes: 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
 drivers/thermal/tegra/soctherm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
index d2e454902689..4203e74e2f79 100644
--- a/drivers/thermal/tegra/soctherm.c
+++ b/drivers/thermal/tegra/soctherm.c
@@ -742,7 +742,7 @@ static int tegra_soctherm_set_hwtrips(struct device *dev,
 	/* Get thermtrips. If missing, try to get critical trips. */
 	temperature = tsensor_group_thermtrip_get(ts, sg->id);
 	if (min_low_temp == temperature)
-		if (tz->ops->get_crit_temp(tz, &temperature))
+		if (thermal_zone_get_crit_temp(tz, &temperature))
 			temperature = max_high_temp;
 
 	ret = thermtrip_program(dev, sg, temperature);
-- 
2.25.1

Re: [PATCH] thermal/drivers/tegra: Fix crash when getting critical temp

[Jon Hunter]

Hi Rafael,

On 10/10/2022 16:03, Jon Hunter wrote:
> Commit 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
> removed the function of_thermal_get_crit_temp() and this is causing a
> NULL pointer deference crash when attempting to call the 'get_crit_temp'
> function pointer because this function pointer is no longer initialised.
> Fix this by replacing the call to the 'get_crit_temp' function pointer
> with a call to the function thermal_zone_get_crit_temp() instead.
> 
> Fixes: 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
>   drivers/thermal/tegra/soctherm.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
> index d2e454902689..4203e74e2f79 100644
> --- a/drivers/thermal/tegra/soctherm.c
> +++ b/drivers/thermal/tegra/soctherm.c
> @@ -742,7 +742,7 @@ static int tegra_soctherm_set_hwtrips(struct device *dev,
>   	/* Get thermtrips. If missing, try to get critical trips. */
>   	temperature = tsensor_group_thermtrip_get(ts, sg->id);
>   	if (min_low_temp == temperature)
> -		if (tz->ops->get_crit_temp(tz, &temperature))
> +		if (thermal_zone_get_crit_temp(tz, &temperature))
>   			temperature = max_high_temp;
>   
>   	ret = thermtrip_program(dev, sg, temperature);


Any feedback on this? OK to take this fix?

Thanks
Jon

-- 
nvpublic

Re: [PATCH] thermal/drivers/tegra: Fix crash when getting critical temp

[Daniel Lezcano]

On 21/10/2022 11:49, Jon Hunter wrote:
> Hi Rafael,
> 
> On 10/10/2022 16:03, Jon Hunter wrote:
>> Commit 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
>> removed the function of_thermal_get_crit_temp() and this is causing a
>> NULL pointer deference crash when attempting to call the 'get_crit_temp'
>> function pointer because this function pointer is no longer initialised.
>> Fix this by replacing the call to the 'get_crit_temp' function pointer
>> with a call to the function thermal_zone_get_crit_temp() instead.
>>
>> Fixes: 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
>> ---
>>   drivers/thermal/tegra/soctherm.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/thermal/tegra/soctherm.c 
>> b/drivers/thermal/tegra/soctherm.c
>> index d2e454902689..4203e74e2f79 100644
>> --- a/drivers/thermal/tegra/soctherm.c
>> +++ b/drivers/thermal/tegra/soctherm.c
>> @@ -742,7 +742,7 @@ static int tegra_soctherm_set_hwtrips(struct 
>> device *dev,
>>       /* Get thermtrips. If missing, try to get critical trips. */
>>       temperature = tsensor_group_thermtrip_get(ts, sg->id);
>>       if (min_low_temp == temperature)
>> -        if (tz->ops->get_crit_temp(tz, &temperature))
>> +        if (thermal_zone_get_crit_temp(tz, &temperature))
>>               temperature = max_high_temp;
>>       ret = thermtrip_program(dev, sg, temperature);
> 

I'll take it


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Re: [PATCH] thermal/drivers/tegra: Fix crash when getting critical temp

[Daniel Lezcano]

On 10/10/2022 17:03, Jon Hunter wrote:
> Commit 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
> removed the function of_thermal_get_crit_temp() and this is causing a
> NULL pointer deference crash when attempting to call the 'get_crit_temp'
> function pointer because this function pointer is no longer initialised.
> Fix this by replacing the call to the 'get_crit_temp' function pointer
> with a call to the function thermal_zone_get_crit_temp() instead.
> 
> Fixes: 13bea86623be ("thermal/of: Remove of_thermal_get_crit_temp()")
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---

Applied, thanks


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