Re: [PATCH] hwmon: (scmi) handle absence of few types of sensors

From: Guenter Roeck
Date: Tue Apr 10 2018 - 16:14:29 EST


On Fri, Apr 06, 2018 at 04:30:47PM +0100, Sudeep Holla wrote:
> Currently the loop checks for non-zero count of sensors for each type
> of sensors which is completely wrong. It also results in aborting the
> registration of sensors if one or more types of sensors are completely
> not supported by the platform SCMI firmware.
>
> This patch fixes the issue by continue to loop and skiping sensor types
> that are not present.
>
> Fixes: b23688aefb8b ("hwmon: add support for sensors exported via ARM SCMI")
> Reported-by: Jim Quinlan <james.quinlan@xxxxxxxxxxxx>
> Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
> Cc: linux-hwmon@xxxxxxxxxxxxxxx
> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>

Applied.

Thanks,
Guenter

> ---
> drivers/hwmon/scmi-hwmon.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hwmon/scmi-hwmon.c b/drivers/hwmon/scmi-hwmon.c
> index 363bf56eb0f2..91976b6ca300 100644
> --- a/drivers/hwmon/scmi-hwmon.c
> +++ b/drivers/hwmon/scmi-hwmon.c
> @@ -170,7 +170,10 @@ static int scmi_hwmon_probe(struct scmi_device *sdev)
> scmi_chip_info.info = ptr_scmi_ci;
> chip_info = &scmi_chip_info;
>
> - for (type = 0; type < hwmon_max && nr_count[type]; type++) {
> + for (type = 0; type < hwmon_max; type++) {
> + if (!nr_count[type])
> + continue;
> +
> scmi_hwmon_add_chan_info(scmi_hwmon_chan, dev, nr_count[type],
> type, hwmon_attributes[type]);
> *ptr_scmi_ci++ = scmi_hwmon_chan++;
> --
> 2.7.4
>