hwmon: (ltc4215) Clear faults at startup

When power is applied to the ltc4215 chip it sometimes reports spurious
faults. The faults are not yet exposed via sysfs, however it may be useful
for userspace to read the fault register directly with the i2cget command.
Clear the fault register when the driver is installed so userspace doesn't
have to worry about spurious fault indications.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/hwmon/ltc4215.c b/drivers/hwmon/ltc4215.c
index 9386e2a39211f75e9a610e899fc43ff755c9dc25..6c9a04136e0aefb9a1b4430146b1453ed9acbe3f 100644 (file)
--- a/drivers/hwmon/ltc4215.c
+++ b/drivers/hwmon/ltc4215.c
@@ -259,7 +259,7 @@ static int ltc4215_probe(struct i2c_client *client,
        mutex_init(&data->update_lock);
 
        /* Initialize the LTC4215 chip */
-       /* TODO */
+       i2c_smbus_write_byte_data(client, LTC4215_FAULT, 0x00);
 
        /* Register sysfs hooks */
        ret = sysfs_create_group(&client->dev.kobj, &ltc4215_group);