From: Chris Packham <chris.packham@alliedtelesis.co.nz> Date: Wed, 23 Mar 2022 03:40:56 +0000 (+1300) Subject: hwmon: (adt7475) Use enum chips when loading attenuator settings X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d45cd804280d5cf43d539f49f671ea26552cedc3;p=linux.git hwmon: (adt7475) Use enum chips when loading attenuator settings Make use of enum chips and use a switch statement in load_attenuators() so that the compiler can tell us if we've failed to cater for a supported chip. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220323034056.260455-4-chris.packham@alliedtelesis.co.nz Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c index 6de501de41b2d..ac480e6e4818b 100644 --- a/drivers/hwmon/adt7475.c +++ b/drivers/hwmon/adt7475.c @@ -1569,12 +1569,12 @@ static int set_property_bit(const struct i2c_client *client, char *property, return ret; } -static int load_attenuators(const struct i2c_client *client, int chip, +static int load_attenuators(const struct i2c_client *client, enum chips chip, struct adt7475_data *data) { - int ret; - - if (chip == adt7476 || chip == adt7490) { + switch (chip) { + case adt7476: + case adt7490: set_property_bit(client, "adi,bypass-attenuator-in0", &data->config4, 4); set_property_bit(client, "adi,bypass-attenuator-in1", @@ -1584,18 +1584,15 @@ static int load_attenuators(const struct i2c_client *client, int chip, set_property_bit(client, "adi,bypass-attenuator-in4", &data->config4, 7); - ret = i2c_smbus_write_byte_data(client, REG_CONFIG4, - data->config4); - if (ret < 0) - return ret; - } else if (chip == adt7473 || chip == adt7475) { + return i2c_smbus_write_byte_data(client, REG_CONFIG4, + data->config4); + case adt7473: + case adt7475: set_property_bit(client, "adi,bypass-attenuator-in1", &data->config2, 5); - ret = i2c_smbus_write_byte_data(client, REG_CONFIG2, - data->config2); - if (ret < 0) - return ret; + return i2c_smbus_write_byte_data(client, REG_CONFIG2, + data->config2); } return 0;