thermal: Remove debug or error messages in get_temp() ops

Some get_temp() ops implementation are showing an error or a debug
message if the reading of the sensor fails.

The debug message is already displayed from the call site of this
ops. So we can remove it.

On the other side, the error should not be displayed because in
production that can raise tons of messages.

Finally, some drivers are showing a debug message with the
temperature, this is also accessible through the trace from the core
code in the temperature_update() function.

Another benefit is the dev_* messages are accessing the thermal zone
device field from the structure, so we encapsulate even more the code
by preventing these accesses.

Remove those messages.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> #Armada
Acked-by: Florian Fainelli <f.fainelli@gmail.com> #brcmstb_thermal.c
Acked-by: Heiko Stuebner <heiko@sntech.de> #rockchip
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/armada_thermal.c

@@ -360,11 +360,8 @@ static int armada_select_channel(struct armada_thermal_priv *priv, int channel)
 	 * we must absolutely wait for the sensor validity bit to ensure we read
 	 * actual data.
 	 */
-	if (armada_wait_sensor_validity(priv)) {
-		dev_err(priv->dev,
-			"Temperature sensor reading not valid\n");
+	if (armada_wait_sensor_validity(priv))
 		return -EIO;
-	}
 
 	return 0;
 }
@@ -402,11 +399,8 @@ static int armada_get_temp_legacy(struct thermal_zone_device *thermal,
 	int ret;
 
 	/* Valid check */
-	if (!armada_is_valid(priv)) {
-		dev_err(priv->dev,
-			"Temperature sensor reading not valid\n");
+	if (!armada_is_valid(priv))
 		return -EIO;
-	}
 
 	/* Do the actual reading */
 	ret = armada_read_sensor(priv, temp);

drivers/thermal/broadcom/brcmstb_thermal.c

@@ -158,10 +158,8 @@ static int brcmstb_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	val = __raw_readl(priv->tmon_base + AVS_TMON_STATUS);
 
-	if (!(val & AVS_TMON_STATUS_valid_msk)) {
-		dev_err(priv->dev, "reading not valid\n");
+	if (!(val & AVS_TMON_STATUS_valid_msk))
 		return -EIO;
-	}
 
 	val = (val & AVS_TMON_STATUS_data_msk) >> AVS_TMON_STATUS_data_shift;
 

drivers/thermal/dove_thermal.c

@@ -91,11 +91,8 @@ static int dove_get_temp(struct thermal_zone_device *thermal,
 
 	/* Valid check */
 	reg = readl_relaxed(priv->control + PMU_TEMP_DIOD_CTRL1_REG);
-	if ((reg & PMU_TDC1_TEMP_VALID_MASK) == 0x0) {
-		dev_err(&thermal->device,
-			"Temperature sensor reading not valid\n");
+	if ((reg & PMU_TDC1_TEMP_VALID_MASK) == 0x0)
 		return -EIO;
-	}
 
 	/*
 	 * Calculate temperature. According to Marvell internal

drivers/thermal/hisi_thermal.c

@@ -436,9 +436,6 @@ static int hisi_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	*temp = data->ops->get_temp(sensor);
 
-	dev_dbg(&data->pdev->dev, "tzd=%p, id=%d, temp=%d, thres=%d\n",
-		sensor->tzd, sensor->id, *temp, sensor->thres_temp);
-
 	return 0;
 }
 

drivers/thermal/imx_sc_thermal.c

@@ -58,11 +58,8 @@ static int imx_sc_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 	hdr->size = 2;
 
 	ret = imx_scu_call_rpc(thermal_ipc_handle, &msg, true);
-	if (ret) {
-		dev_err(&sensor->tzd->device, "read temp sensor %d failed, ret %d\n",
-			sensor->resource_id, ret);
+	if (ret)
 		return ret;
-	}
 
 	*temp = msg.data.resp.celsius * 1000 + msg.data.resp.tenths * 100;
 

drivers/thermal/imx_thermal.c

@@ -265,10 +265,8 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	regmap_read(map, soc_data->temp_data, &val);
 
-	if ((val & soc_data->temp_valid_mask) == 0) {
-		dev_dbg(&tz->device, "temp measurement never finished\n");
+	if ((val & soc_data->temp_valid_mask) == 0)
 		return -EAGAIN;
-	}
 
 	n_meas = (val & soc_data->temp_value_mask)
 		>> soc_data->temp_value_shift;

drivers/thermal/kirkwood_thermal.c

@@ -33,11 +33,8 @@ static int kirkwood_get_temp(struct thermal_zone_device *thermal,
 
 	/* Valid check */
 	if (!((reg >> KIRKWOOD_THERMAL_VALID_OFFSET) &
-	    KIRKWOOD_THERMAL_VALID_MASK)) {
-		dev_err(&thermal->device,
-			"Temperature sensor reading not valid\n");
+	    KIRKWOOD_THERMAL_VALID_MASK))
 		return -EIO;
-	}
 
 	/*
 	 * Calculate temperature. According to Marvell internal

drivers/thermal/max77620_thermal.c

@@ -51,10 +51,8 @@ static int max77620_thermal_read_temp(struct thermal_zone_device *tz, int *temp)
 	int ret;
 
 	ret = regmap_read(mtherm->rmap, MAX77620_REG_STATLBT, &val);
-	if (ret < 0) {
-		dev_err(mtherm->dev, "Failed to read STATLBT: %d\n", ret);
+	if (ret < 0)
 		return ret;
-	}
 
 	if (val & MAX77620_IRQ_TJALRM2_MASK)
 		*temp = MAX77620_TJALARM2_TEMP;

drivers/thermal/rockchip_thermal.c

@@ -1233,9 +1233,6 @@ static int rockchip_thermal_get_temp(struct thermal_zone_device *tz, int *out_te
 
 	retval = tsadc->get_temp(&tsadc->table,
 				 sensor->id, thermal->regs, out_temp);
-	dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
-		sensor->id, *out_temp, retval);
-
 	return retval;
 }
 

drivers/thermal/st/st_thermal.c

@@ -109,7 +109,6 @@ static int st_thermal_calibration(struct st_thermal_sensor *sensor)
 static int st_thermal_get_temp(struct thermal_zone_device *th, int *temperature)
 {
 	struct st_thermal_sensor *sensor = thermal_zone_device_priv(th);
-	struct device *dev = sensor->dev;
 	unsigned int temp;
 	unsigned int overflow;
 	int ret;
@@ -127,8 +126,6 @@ static int st_thermal_get_temp(struct thermal_zone_device *th, int *temperature)
 	temp += sensor->cdata->temp_adjust_val;
 	temp = mcelsius(temp);
 
-	dev_dbg(dev, "temperature: %d\n", temp);
-
 	*temperature = temp;
 
 	return 0;

drivers/thermal/thermal-generic-adc.c

@@ -59,10 +59,9 @@ static int gadc_thermal_get_temp(struct thermal_zone_device *tz, int *temp)
 	int ret;
 
 	ret = iio_read_channel_processed(gti->channel, &val);
-	if (ret < 0) {
-		dev_err(gti->dev, "IIO channel read failed %d\n", ret);
+	if (ret < 0)
 		return ret;
-	}
+
 	*temp = gadc_thermal_adc_to_temp(gti, val);
 
 	return 0;