On Wed, Oct 28, 2015 at 05:17:31PM +0000, Sudeep Holla wrote:
> Currently it's assumed that firmware exports only the class of sensors
> supported by the driver. However with newer firmware or SCPI protocol
> revision, support for newer classes of sensors can be present.
>
> The driver fails to probe with the following warning if an unsupported
> class of sensor is encountered in the firmware.
>
> sysfs: cannot create duplicate filename
> '/devices/platform/scpi/scpi:sensors/hwmon/hwmon0/'
> ------------[ cut here ]------------
> WARNING: at fs/sysfs/dir.c:31
> Modules linked in:
>
> CPU: 0 PID: 6 Comm: kworker/u12:0 Not tainted 4.3.0-rc7 #137
> Hardware name: ARM Juno development board (r0) (DT)
> Workqueue: deferwq deferred_probe_work_func
> PC is at sysfs_warn_dup+0x54/0x78
> LR is at sysfs_warn_dup+0x54/0x78
>
> This patch fixes the above issue by skipping through the unsupported
> class of SCPI sensors.
>
> Fixes: 68acc77a2d51 ("hwmon: Support thermal zones registration for SCP temperature sensors")
> Fixes: ea98b29a05e9 ("hwmon: Support sensors exported via ARM SCP interface")
> Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
> Reviewed-by: Punit Agrawal <punit.agrawal@xxxxxxx>
> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/hwmon/scpi-hwmon.c | 21 +++++++++++----------
> 1 file changed, 11 insertions(+), 10 deletions(-)
>
> Hi Guenter,
>
> Either me/Punit will need ping you once the original driver is merged
> via arm-soc so that you can pick this after that. Alternatively we
> can push it via arm-soc but I wouldn't rush for that as it's not that
> urgent. Is that fine with you ?
>
Either way is fine with me.
Guenter
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