staging: iio: isl29028: made error messages consistent

The wording and style of the different error messages was not
consistent. This patch makes the wording and style consistent
throughout the driver.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/light/isl29028.c

@@ -200,14 +200,16 @@ static int isl29028_read_als_ir(struct isl29028_chip *chip, int *als_ir)
 	ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_L, &lsb);
 	if (ret < 0) {
 		dev_err(dev,
-			"Error in reading register ALSIR_L err %d\n", ret);
+			"%s(): Error %d reading register ALSIR_L\n",
+			__func__, ret);
 		return ret;
 	}
 
 	ret = regmap_read(chip->regmap, ISL29028_REG_ALSIR_U, &msb);
 	if (ret < 0) {
 		dev_err(dev,
-			"Error in reading register ALSIR_U err %d\n", ret);
+			"%s(): Error %d reading register ALSIR_U\n",
+			__func__, ret);
 		return ret;
 	}
 
@@ -232,8 +234,8 @@ static int isl29028_read_proxim(struct isl29028_chip *chip, int *prox)
 
 	ret = regmap_read(chip->regmap, ISL29028_REG_PROX_DATA, &data);
 	if (ret < 0) {
-		dev_err(dev, "Error in reading register %d, error %d\n",
-			ISL29028_REG_PROX_DATA, ret);
+		dev_err(dev, "%s(): Error %d reading register PROX_DATA\n",
+			__func__, ret);
 		return ret;
 	}
 
@@ -250,7 +252,8 @@ static int isl29028_als_get(struct isl29028_chip *chip, int *als_data)
 
 	ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_ALS);
 	if (ret < 0) {
-		dev_err(dev, "Error in enabling ALS mode err %d\n", ret);
+		dev_err(dev, "%s(): Error %d enabling ALS mode\n", __func__,
+			ret);
 		return ret;
 	}
 
@@ -280,7 +283,8 @@ static int isl29028_ir_get(struct isl29028_chip *chip, int *ir_data)
 
 	ret = isl29028_set_als_ir_mode(chip, ISL29028_MODE_IR);
 	if (ret < 0) {
-		dev_err(dev, "Error in enabling IR mode err %d\n", ret);
+		dev_err(dev, "%s(): Error %d enabling IR mode\n", __func__,
+			ret);
 		return ret;
 	}
 
@@ -301,14 +305,15 @@ static int isl29028_write_raw(struct iio_dev *indio_dev,
 	case IIO_PROXIMITY:
 		if (mask != IIO_CHAN_INFO_SAMP_FREQ) {
 			dev_err(dev,
-				"proximity: mask value 0x%08lx not supported\n",
-				mask);
+				"%s(): proximity: Mask value 0x%08lx is not supported\n",
+				__func__, mask);
 			break;
 		}
 
 		if (val < 1 || val > 100) {
 			dev_err(dev,
-				"Samp_freq %d is not in range[1:100]\n", val);
+				"%s(): proximity: Sampling frequency %d is not in the range [1:100]\n",
+				__func__, val);
 			break;
 		}
 
@@ -317,21 +322,23 @@ static int isl29028_write_raw(struct iio_dev *indio_dev,
 	case IIO_LIGHT:
 		if (mask != IIO_CHAN_INFO_SCALE) {
 			dev_err(dev,
-				"light: mask value 0x%08lx not supported\n",
-				mask);
+				"%s(): light: Mask value 0x%08lx is not supported\n",
+				__func__, mask);
 			break;
 		}
 
 		if ((val != 125) && (val != 2000)) {
 			dev_err(dev,
-				"lux scale %d is invalid [125, 2000]\n", val);
+				"%s(): light: Lux scale %d is not in the set {125, 2000}\n",
+				__func__, val);
 			break;
 		}
 
 		ret = isl29028_set_als_scale(chip, val);
 		break;
 	default:
-		dev_err(dev, "Unsupported channel type\n");
+		dev_err(dev, "%s(): Unsupported channel type %x\n",
+			__func__, chan->type);
 		break;
 	}
 
@@ -385,7 +392,8 @@ static int isl29028_read_raw(struct iio_dev *indio_dev,
 		ret = IIO_VAL_INT;
 		break;
 	default:
-		dev_err(dev, "mask value 0x%08lx not supported\n", mask);
+		dev_err(dev, "%s(): mask value 0x%08lx is not supported\n",
+			__func__, mask);
 		break;
 	}
 
@@ -438,8 +446,8 @@ static int isl29028_chip_init_and_power_on(struct isl29028_chip *chip)
 
 	ret = regmap_write(chip->regmap, ISL29028_REG_CONFIGURE, 0x0);
 	if (ret < 0) {
-		dev_err(dev, "%s(): write to reg %d failed, err = %d\n",
-			__func__, ISL29028_REG_CONFIGURE, ret);
+		dev_err(dev, "%s(): Error %d clearing the CONFIGURE register\n",
+			__func__, ret);
 		return ret;
 	}
 
@@ -493,8 +501,8 @@ static int isl29028_probe(struct i2c_client *client,
 	chip->regmap = devm_regmap_init_i2c(client, &isl29028_regmap_config);
 	if (IS_ERR(chip->regmap)) {
 		ret = PTR_ERR(chip->regmap);
-		dev_err(&client->dev, "regmap initialization failed: %d\n",
-			ret);
+		dev_err(&client->dev, "%s: Error %d initializing regmap\n",
+			__func__, ret);
 		return ret;
 	}
 
@@ -506,16 +514,16 @@ static int isl29028_probe(struct i2c_client *client,
 	ret = regmap_write(chip->regmap, ISL29028_REG_TEST1_MODE, 0x0);
 	if (ret < 0) {
 		dev_err(&client->dev,
-			"%s(): write to reg %d failed, err = %d\n", __func__,
-			ISL29028_REG_TEST1_MODE, ret);
+			"%s(): Error %d writing to TEST1_MODE register\n",
+			__func__, ret);
 		return ret;
 	}
 
 	ret = regmap_write(chip->regmap, ISL29028_REG_TEST2_MODE, 0x0);
 	if (ret < 0) {
 		dev_err(&client->dev,
-			"%s(): write to reg %d failed, err = %d\n", __func__,
-			ISL29028_REG_TEST2_MODE, ret);
+			"%s(): Error %d writing to TEST2_MODE register\n",
+			__func__, ret);
 		return ret;
 	}
 
@@ -535,8 +543,8 @@ static int isl29028_probe(struct i2c_client *client,
 	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev,
-			"iio registration fails with error %d\n",
-			ret);
+			"%s(): iio registration failed with error %d\n",
+			__func__, ret);
 		return ret;
 	}