From khali@linux-fr.org Wed Jul 27 12:28:53 2005 Date: Wed, 27 Jul 2005 21:28:28 +0200 From: Jean Delvare To: Greg KH Subject: hwmon: soften lm75 initialization Message-Id: <20050727212828.0df56e31.khali@linux-fr.org> The LM75 initialization is a bit agressive, it arbitrarily reconfigures the chip. Make it only change the bit it needs. This is a port from the 2.4 kernel version of the driver (lm_sensors). Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/lm75.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) --- gregkh-2.6.orig/drivers/hwmon/lm75.c 2005-07-27 23:26:34.000000000 -0700 +++ gregkh-2.6/drivers/hwmon/lm75.c 2005-07-27 23:30:30.000000000 -0700 @@ -251,8 +251,12 @@ static void lm75_init_client(struct i2c_client *client) { - /* Initialize the LM75 chip */ - lm75_write_value(client, LM75_REG_CONF, 0); + int reg; + + /* Enable if in shutdown mode */ + reg = lm75_read_value(client, LM75_REG_CONF); + if (reg >= 0 && (reg & 0x01)) + lm75_write_value(client, LM75_REG_CONF, reg & 0xfe); } static struct lm75_data *lm75_update_device(struct device *dev)