[PATCH v4] powernv/sensor: Handle OPAL_WRONG_STATE error return

[Vipin K Parashar]

Hi Michael,

Any feedback/outlook with this patch ?

Regards,
Vipin


On Friday 10 March 2017 05:27 PM, Vipin K Parashar wrote:
> OPAL returns OPAL_WRONG_STATE upon failing to provide
> sensor data due to core sleeping/offline. Added check
> in opal_get_sensor_data() for sensor read failure with
> OPAL_WRONG_STATE return code and returned -EIO.
>
> Signed-off-by: Vipin K Parashar <vipin at linux.vnet.ibm.com>
> ---
> Changes in v4:
>   - Removed sleeping core log message with KERN_NOTICE priority.
>
> Changes in v3:
>   - Added a new case for OPAL_WRONG_STATE in sensor read
>     along with a log message indicating sleeping/offline core
>     causing read fail.
>
>   arch/powerpc/platforms/powernv/opal-sensor.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/arch/powerpc/platforms/powernv/opal-sensor.c b/arch/powerpc/platforms/powernv/opal-sensor.c
> index 308efd1..aa267f1 100644
> --- a/arch/powerpc/platforms/powernv/opal-sensor.c
> +++ b/arch/powerpc/platforms/powernv/opal-sensor.c
> @@ -64,6 +64,10 @@ int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data)
>   		*sensor_data = be32_to_cpu(data);
>   		break;
>
> +	case OPAL_WRONG_STATE:
> +		ret = -EIO;
> +		break;
> +
>   	default:
>   		ret = opal_error_code(ret);
>   		break;