From: khali@linux-fr.org (Jean Delvare) Date: Wed, 27 Jul 2005 21:28:41 +0000 Subject: [lm-sensors] [PATCH 2.6] hwmon: soften lm75 initialization Message-Id: <20050727212828.0df56e31.khali@linux-fr.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lm-sensors@vger.kernel.org Hi Greg, all, 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 drivers/hwmon/lm75.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) --- linux-2.6.13-rc3.orig/drivers/hwmon/lm75.c 2005-07-16 09:53:09.000000000 +0200 +++ linux-2.6.13-rc3/drivers/hwmon/lm75.c 2005-07-16 17:35:18.000000000 +0200 @@ -264,8 +264,12 @@ 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) -- Jean Delvare