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leds: lm3642: remove warnings for bad strtol, cleanup gotos

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Bad string from userspace is not worth printing warning on; gotos that
just directly return are not good, plus a comment fix.

Cc: jacek.anaszewski@gmail.com, linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, dmurphy@ti.com
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Pavel Machek 2020-01-02 22:31:44 +01:00 committed by Pavel
parent 445da487f1
commit 867b682459
1 changed files with 14 additions and 23 deletions
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37
drivers/leds/leds-lm3642.c
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@ -106,7 +106,7 @@ static int lm3642_control(struct lm3642_chip_data *chip,
ret = regmap_read(chip->regmap, REG_FLAG, &chip->last_flag);
if (ret < 0) {
dev_err(chip->dev, "Failed to read REG_FLAG Register\n");
goto out;
return ret;
}
if (chip->last_flag)
@ -146,11 +146,11 @@ static int lm3642_control(struct lm3642_chip_data *chip,
break;
default:
return ret;
return -EINVAL;
}
if (ret < 0) {
dev_err(chip->dev, "Failed to write REG_I_CTRL Register\n");
goto out;
return ret;
}
if (chip->tx_pin)
@ -159,13 +159,12 @@ static int lm3642_control(struct lm3642_chip_data *chip,
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
MODE_BITS_MASK << MODE_BITS_SHIFT,
opmode << MODE_BITS_SHIFT);
out:
return ret;
}
/* torch */
/* torch pin config for lm3642*/
/* torch pin config for lm3642 */
static ssize_t lm3642_torch_pin_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
@ -178,7 +177,7 @@ static ssize_t lm3642_torch_pin_store(struct device *dev,
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out_strtoint;
return ret;
if (state != 0)
state = 0x01 << TORCH_PIN_EN_SHIFT;
@ -186,16 +185,12 @@ static ssize_t lm3642_torch_pin_store(struct device *dev,
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
TORCH_PIN_EN_MASK << TORCH_PIN_EN_SHIFT,
state);
if (ret < 0)
goto out;
if (ret < 0) {
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return ret;
}
return size;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return ret;
out_strtoint:
dev_err(chip->dev, "%s: fail to change str to int\n", __func__);
return ret;
}
static DEVICE_ATTR(torch_pin, S_IWUSR, NULL, lm3642_torch_pin_store);
@ -229,7 +224,7 @@ static ssize_t lm3642_strobe_pin_store(struct device *dev,
ret = kstrtouint(buf, 10, &state);
if (ret)
goto out_strtoint;
return ret;
if (state != 0)
state = 0x01 << STROBE_PIN_EN_SHIFT;
@ -237,16 +232,12 @@ static ssize_t lm3642_strobe_pin_store(struct device *dev,
ret = regmap_update_bits(chip->regmap, REG_ENABLE,
STROBE_PIN_EN_MASK << STROBE_PIN_EN_SHIFT,
state);
if (ret < 0)
goto out;
if (ret < 0) {
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return ret;
}
return size;
out:
dev_err(chip->dev, "%s:i2c access fail to register\n", __func__);
return ret;
out_strtoint:
dev_err(chip->dev, "%s: fail to change str to int\n", __func__);
return ret;
}
static DEVICE_ATTR(strobe_pin, S_IWUSR, NULL, lm3642_strobe_pin_store);