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hwmon: (max1619) Fix critical alarm display
The overtemperature status bit, which is used to display critical alarm status, matches the output of the OVERT signal 1:1. If that signal is active-low, the bit will read 1 if there is no alarm. It is therefore necessary to reverse the bit in this case. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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1 changed files with 5 additions and 0 deletions
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@ -325,6 +325,7 @@ static struct max1619_data *max1619_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct max1619_data *data = i2c_get_clientdata(client);
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int config;
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mutex_lock(&data->update_lock);
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@ -344,6 +345,10 @@ static struct max1619_data *max1619_update_device(struct device *dev)
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MAX1619_REG_R_TCRIT_HYST);
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data->alarms = i2c_smbus_read_byte_data(client,
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MAX1619_REG_R_STATUS);
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/* If OVERT polarity is low, reverse alarm bit */
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config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG);
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if (!(config & 0x20))
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data->alarms ^= 0x02;
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data->last_updated = jiffies;
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data->valid = 1;
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