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SubjectRe: [PATCH -next] hwmon: (scmi) return -EINVAL when sensor information is unavailable
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On 03/15/2018 11:08 AM, Sudeep Holla wrote:
> Passing NULL pointer to PTR_ERR will result in return value of 0
> indicating success which is clearly not what it is intended here.
>
> This patch returns -EINVAL instead when the sensor information is not
> available.
>
> Fixes: b23688aefb8b ("hwmon: add support for sensors exported via ARM SCMI")
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-hwmon@vger.kernel.org
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

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

> ---
> drivers/hwmon/scmi-hwmon.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Hi Guenter,
>
> I will try to push this via ARM-SoC if possible before v4.17 merge window.
> So please provide Ack if you are fine.
>
> Regards,
> Sudeep
>
> diff --git a/drivers/hwmon/scmi-hwmon.c b/drivers/hwmon/scmi-hwmon.c
> index 32e750373ced..363bf56eb0f2 100644
> --- a/drivers/hwmon/scmi-hwmon.c
> +++ b/drivers/hwmon/scmi-hwmon.c
> @@ -138,7 +138,7 @@ static int scmi_hwmon_probe(struct scmi_device *sdev)
> for (i = 0; i < nr_sensors; i++) {
> sensor = handle->sensor_ops->info_get(handle, i);
> if (!sensor)
> - return PTR_ERR(sensor);
> + return -EINVAL;
>
> switch (sensor->type) {
> case TEMPERATURE_C:
>

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