diff --git a/drivers/hwmon/power8_occ_i2c.c b/drivers/hwmon/power8_occ_i2c.c
index 37280a5612473..6352487cc6931 100644
--- a/drivers/hwmon/power8_occ_i2c.c
+++ b/drivers/hwmon/power8_occ_i2c.c
@@ -370,7 +370,7 @@ static int parse_occ_response(struct i2c_client *client,
 
 	/* check if the data is valid */
 	if (strncmp(&data[SENSOR_STR_OFFSET], "SENSOR", 6) != 0) {
-		dev_err(&client->dev,
+		dev_dbg(&client->dev,
 			"ERROR: no SENSOR String in response\n");
 		ret = -1;
 		goto err;
@@ -378,7 +378,7 @@ static int parse_occ_response(struct i2c_client *client,
 
 	sensor_block_num = data[SENSOR_BLOCK_NUM_OFFSET];
 	if (sensor_block_num == 0) {
-		dev_err(&client->dev, "ERROR: SENSOR block num is 0\n");
+		dev_dbg(&client->dev, "ERROR: SENSOR block num is 0\n");
 		ret = -1;
 		goto err;
 	}
@@ -526,7 +526,7 @@ static int parse_occ_response(struct i2c_client *client,
 			}
 
 		} else {
-			dev_err(&client->dev,
+			dev_dbg(&client->dev,
 				"ERROR: sensor type %s not supported\n",
 				resp->blocks[b].sensor_type);
 			ret = -1;
@@ -617,13 +617,13 @@ static int occ_get_all(struct i2c_client *client, struct occ_response *occ_resp)
 	dev_dbg(&client->dev, "OCC data length: %d\n", num_bytes);
 
 	if (num_bytes > OCC_DATA_MAX) {
-		dev_err(&client->dev, "ERROR: OCC data length must be < 4KB\n");
+		dev_dbg(&client->dev, "ERROR: OCC data length must be < 4KB\n");
 		ret = -EINVAL;
 		goto out;
 	}
 
 	if (num_bytes <= 0) {
-		dev_err(&client->dev, "ERROR: OCC data length is zero\n");
+		dev_dbg(&client->dev, "ERROR: OCC data length is zero\n");
 		ret = -EINVAL;
 		goto out;
 	}
@@ -670,7 +670,7 @@ static void *occ_get_sensor(struct device *hwmon_dev, enum sensor_t t)
 
 	ret = occ_update_device(dev);
 	if (ret != 0) {
-		dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+		dev_dbg(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
 		return NULL;
 	}
 
@@ -1161,10 +1161,12 @@ static ssize_t set_user_powercap(struct device *hwmon_dev,
 	val = cpu_to_le16(val);
 	err = occ_send_cmd(client, 0, 0x22, 2, (uint8_t *)&val, resp);
 	if (err != 0) {
-		dev_err(dev, "Set User Powercap: wrong return status: %x\n",
+		dev_dbg(dev,
+			"ERROR: Set User Powercap: wrong return status: %x\n",
 			err);
 		if (err == 0x13)
-			dev_err(dev, "invalid powercap value: %x\n", val);
+			dev_info(dev,
+				"ERROR: set invalid powercap value: %x\n", val);
 		return -EINVAL;
 	}
 	data->user_powercap = val;
@@ -1219,7 +1221,7 @@ static int occ_create_hwmon_attribute(struct device *dev)
 
 	ret = occ_update_device(dev);
 	if (ret != 0) {
-		dev_err(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
+		dev_dbg(dev, "ERROR: cannot get occ sensor data: %d\n", ret);
 		return ret;
 	}
 
@@ -1244,7 +1246,8 @@ static int occ_create_hwmon_attribute(struct device *dev)
 			ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
 				&occ_temp_attr_group[i]);
 			if (ret) {
-				dev_err(dev, "error create temp sysfs entry\n");
+				dev_dbg(dev,
+					"ERROR: cannot create sysfs entry\n");
 				goto error;
 			}
 		}
@@ -1258,7 +1261,8 @@ static int occ_create_hwmon_attribute(struct device *dev)
 			ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
 				&occ_freq_attr_group[i]);
 			if (ret) {
-				dev_err(dev, "error create freq sysfs entry\n");
+				dev_dbg(dev,
+					"ERROR: cannot create sysfs entry\n");
 				goto error;
 			}
 		}
@@ -1272,7 +1276,8 @@ static int occ_create_hwmon_attribute(struct device *dev)
 			ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
 				&occ_power_attr_group[i]);
 			if (ret) {
-				dev_err(dev, "error create power sysfs entry\n");
+				dev_dbg(dev,
+					"ERROR: cannot create sysfs entry\n");
 				goto error;
 			}
 		}
@@ -1286,7 +1291,8 @@ static int occ_create_hwmon_attribute(struct device *dev)
 			ret = sysfs_create_group(&drv_data->hwmon_dev->kobj,
 				&occ_caps_attr_group[i]);
 			if (ret) {
-				dev_err(dev, "error create caps sysfs entry\n");
+				dev_dbg(dev,
+					"ERROR: cannot create sysfs entry\n");
 				goto error;
 			}
 		}