thermal/drivers/qcom/spmi-adc-tm5: Don't abort probing if a sensor is not used

adc_tm5_register_tzd() registers the thermal zone sensors for all
channels of the thermal monitor. If the registration of one channel
fails the function skips the processing of the remaining channels
and returns an error, which results in _probe() being aborted.

One of the reasons the registration could fail is that none of the
thermal zones is using the channel/sensor, which hardly is a critical
error (if it is an error at all). If this case is detected emit a
warning and continue with processing the remaining channels.

Fixes: ca66dca5eda6 ("thermal: qcom: add support for adc-tm5 PMIC thermal monitor")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reported-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210823134726.1.I1dd23ddf77e5b3568625d80d6827653af071ce19@changeid

diff --git a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
index 232fd0b333251c3c7b4bfecf7289c82585002970..8494cc04aa21097b6c6276569a080a33130f2636 100644 (file)
--- a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
+++ b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c
@@ -359,6 +359,12 @@ static int adc_tm5_register_tzd(struct adc_tm5_chip *adc_tm)
                                                           &adc_tm->channels[i],
                                                           &adc_tm5_ops);
                if (IS_ERR(tzd)) {
+                       if (PTR_ERR(tzd) == -ENODEV) {
+                               dev_warn(adc_tm->dev, "thermal sensor on channel %d is not used\n",
+                                        adc_tm->channels[i].channel);
+                               continue;
+                       }
+
                        dev_err(adc_tm->dev, "Error registering TZ zone for channel %d: %ld\n",
                                adc_tm->channels[i].channel, PTR_ERR(tzd));
                        return PTR_ERR(tzd);