diff options
Diffstat (limited to 'drivers/leds/leds-turris-omnia.c')
| -rw-r--r-- | drivers/leds/leds-turris-omnia.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/leds/leds-turris-omnia.c b/drivers/leds/leds-turris-omnia.c index f27241896970..b443f8c989fa 100644 --- a/drivers/leds/leds-turris-omnia.c +++ b/drivers/leds/leds-turris-omnia.c @@ -60,8 +60,11 @@ struct omnia_leds { static int omnia_cmd_write_u8(const struct i2c_client *client, u8 cmd, u8 val) { u8 buf[2] = { cmd, val }; + int ret; + + ret = i2c_master_send(client, buf, sizeof(buf)); - return i2c_master_send(client, buf, sizeof(buf)); + return ret < 0 ? ret : 0; } static int omnia_cmd_read_raw(struct i2c_adapter *adapter, u8 addr, u8 cmd, @@ -81,7 +84,7 @@ static int omnia_cmd_read_raw(struct i2c_adapter *adapter, u8 addr, u8 cmd, ret = i2c_transfer(adapter, msgs, ARRAY_SIZE(msgs)); if (likely(ret == ARRAY_SIZE(msgs))) - return len; + return 0; else if (ret < 0) return ret; else @@ -91,11 +94,11 @@ static int omnia_cmd_read_raw(struct i2c_adapter *adapter, u8 addr, u8 cmd, static int omnia_cmd_read_u8(const struct i2c_client *client, u8 cmd) { u8 reply; - int ret; + int err; - ret = omnia_cmd_read_raw(client->adapter, client->addr, cmd, &reply, 1); - if (ret < 0) - return ret; + err = omnia_cmd_read_raw(client->adapter, client->addr, cmd, &reply, 1); + if (err) + return err; return reply; } @@ -236,7 +239,7 @@ static void omnia_hwtrig_deactivate(struct led_classdev *cdev) mutex_unlock(&leds->lock); - if (err < 0) + if (err) dev_err(cdev->dev, "Cannot put LED to software mode: %i\n", err); } @@ -302,7 +305,7 @@ static int omnia_led_register(struct i2c_client *client, struct omnia_led *led, ret = omnia_cmd_write_u8(client, CMD_LED_MODE, CMD_LED_MODE_LED(led->reg) | CMD_LED_MODE_USER); - if (ret < 0) { + if (ret) { dev_err(dev, "Cannot set LED %pOF to software mode: %i\n", np, ret); return ret; @@ -311,7 +314,7 @@ static int omnia_led_register(struct i2c_client *client, struct omnia_led *led, /* disable the LED */ ret = omnia_cmd_write_u8(client, CMD_LED_STATE, CMD_LED_STATE_LED(led->reg)); - if (ret < 0) { + if (ret) { dev_err(dev, "Cannot set LED %pOF brightness: %i\n", np, ret); return ret; } @@ -364,7 +367,7 @@ static ssize_t brightness_store(struct device *dev, struct device_attribute *a, { struct i2c_client *client = to_i2c_client(dev); unsigned long brightness; - int ret; + int err; if (kstrtoul(buf, 10, &brightness)) return -EINVAL; @@ -372,9 +375,9 @@ static ssize_t brightness_store(struct device *dev, struct device_attribute *a, if (brightness > 100) return -EINVAL; - ret = omnia_cmd_write_u8(client, CMD_LED_SET_BRIGHTNESS, brightness); + err = omnia_cmd_write_u8(client, CMD_LED_SET_BRIGHTNESS, brightness); - return ret < 0 ? ret : count; + return err ?: count; } static DEVICE_ATTR_RW(brightness); @@ -403,7 +406,7 @@ static ssize_t gamma_correction_store(struct device *dev, struct i2c_client *client = to_i2c_client(dev); struct omnia_leds *leds = i2c_get_clientdata(client); bool val; - int ret; + int err; if (!leds->has_gamma_correction) return -EOPNOTSUPP; @@ -411,9 +414,9 @@ static ssize_t gamma_correction_store(struct device *dev, if (kstrtobool(buf, &val) < 0) return -EINVAL; - ret = omnia_cmd_write_u8(client, CMD_SET_GAMMA_CORRECTION, val); + err = omnia_cmd_write_u8(client, CMD_SET_GAMMA_CORRECTION, val); - return ret < 0 ? ret : count; + return err ?: count; } static DEVICE_ATTR_RW(gamma_correction); @@ -431,7 +434,7 @@ static int omnia_mcu_get_features(const struct i2c_client *client) err = omnia_cmd_read_raw(client->adapter, OMNIA_MCU_I2C_ADDR, CMD_GET_STATUS_WORD, &reply, sizeof(reply)); - if (err < 0) + if (err) return err; /* Check whether MCU firmware supports the CMD_GET_FEAUTRES command */ @@ -440,7 +443,7 @@ static int omnia_mcu_get_features(const struct i2c_client *client) err = omnia_cmd_read_raw(client->adapter, OMNIA_MCU_I2C_ADDR, CMD_GET_FEATURES, &reply, sizeof(reply)); - if (err < 0) + if (err) return err; return le16_to_cpu(reply); |