commit: 52bc9802ce849d0d287cc5fe76d06b0daa3986ca From: Gabriele Gorla <[email protected]> Date: Wed, 8 Dec 2010 16:27:22 +0100 Subject: [PATCH] hwmon: (adm1026) Fix setting fan_div
Prevent setting fan_div from stomping on other fans that share the same I2C register. Signed-off-by: Gabriele Gorla <[email protected]> Cc: [email protected] Signed-off-by: Jean Delvare <[email protected]> --- drivers/hwmon/adm1026.c | 16 +++++++++------- 1 files changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c index 4bf969c..6f257ce 100644 --- a/drivers/hwmon/adm1026.c +++ b/drivers/hwmon/adm1026.c @@ -916,7 +916,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, int nr = sensor_attr->index; struct i2c_client *client = to_i2c_client(dev); struct adm1026_data *data = i2c_get_clientdata(client); - int val, orig_div, new_div, shift; + int val, orig_div, new_div; val = simple_strtol(buf, NULL, 10); new_div = DIV_TO_REG(val); @@ -928,15 +928,17 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, data->fan_div[nr] = DIV_FROM_REG(new_div); if (nr < 4) { /* 0 <= nr < 4 */ - shift = 2 * nr; adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3, - ((DIV_TO_REG(orig_div) & (~(0x03 << shift))) | - (new_div << shift))); + (DIV_TO_REG(data->fan_div[0]) << 0) | + (DIV_TO_REG(data->fan_div[1]) << 2) | + (DIV_TO_REG(data->fan_div[2]) << 4) | + (DIV_TO_REG(data->fan_div[3]) << 6)); } else { /* 3 < nr < 8 */ - shift = 2 * (nr - 4); adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7, - ((DIV_TO_REG(orig_div) & (~(0x03 << (2 * shift)))) | - (new_div << shift))); + (DIV_TO_REG(data->fan_div[4]) << 0) | + (DIV_TO_REG(data->fan_div[5]) << 2) | + (DIV_TO_REG(data->fan_div[6]) << 4) | + (DIV_TO_REG(data->fan_div[7]) << 6)); } if (data->fan_div[nr] != orig_div) { _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
