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[PATCH v3] thermal: Fix thermal_zone_of_sensor_register to match documentation

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  [PATCH v3] thermal: Fix thermal_zone_of_sensor_register to match documentation Punit Agrawal <punit.agrawal@arm.com> - 2015-08-05 12:00 +0200
    Re: [PATCH v3] thermal: Fix thermal_zone_of_sensor_register to match  documentation Guenter Roeck <linux@roeck-us.net> - 2015-08-05 17:00 +0200

#1200601 — [PATCH v3] thermal: Fix thermal_zone_of_sensor_register to match documentation

thermal_zone_of_sensor_register is documented as returning a pointer
to either a valid thermal_zone_device on success, or a corresponding
ERR_PTR() value.

In contrast, the function returns NULL when THERMAL_OF is configured
off. Fix this.

Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Zhang Rui <rui.zhang@intel.com>
---
Hi Guenter,

It was pointed out that ENOSYS is frowned upon for anything other than
indicating lack of support for a syscall. The rest of the functions in
the file use ENODEV. Updating thermal_zone_of_sensor_register to do
the same.

Could you please re-ack if you're ok with this change?

Thanks,
Punit

 include/linux/thermal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 037e9df..f344e51 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -364,7 +364,7 @@ static inline struct thermal_zone_device *
 thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
 				const struct thermal_zone_of_device_ops *ops)
 {
-	return NULL;
+	return ERR_PTR(-ENODEV);
 }
 
 static inline
-- 
2.1.4

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#1200838 — Re: [PATCH v3] thermal: Fix thermal_zone_of_sensor_register to match documentation

On 08/05/2015 02:57 AM, Punit Agrawal wrote:
> thermal_zone_of_sensor_register is documented as returning a pointer
> to either a valid thermal_zone_device on success, or a corresponding
> ERR_PTR() value.
>
> In contrast, the function returns NULL when THERMAL_OF is configured
> off. Fix this.
>
> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: Eduardo Valentin <edubezval@gmail.com>
> Cc: Zhang Rui <rui.zhang@intel.com>

Acked-by: Guenter Roeck <linux@roeck-us.net>

> ---
> Hi Guenter,
>
> It was pointed out that ENOSYS is frowned upon for anything other than
> indicating lack of support for a syscall. The rest of the functions in
> the file use ENODEV. Updating thermal_zone_of_sensor_register to do
> the same.
>
> Could you please re-ack if you're ok with this change?
>
> Thanks,
> Punit
>
>   include/linux/thermal.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
> index 037e9df..f344e51 100644
> --- a/include/linux/thermal.h
> +++ b/include/linux/thermal.h
> @@ -364,7 +364,7 @@ static inline struct thermal_zone_device *
>   thermal_zone_of_sensor_register(struct device *dev, int id, void *data,
>   				const struct thermal_zone_of_device_ops *ops)
>   {
> -	return NULL;
> +	return ERR_PTR(-ENODEV);
>   }
>
>   static inline
>

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