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Date: Tue, 14 Sep 2010 11:18:39 +0200
From: Jean Delvare <khali@...ux-fr.org>
To: Guenter Roeck <guenter.roeck@...csson.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
lm-sensors@...sensors.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/7] hwmon: (lm90) Simplify set_temp11 register
calculations
On Thu, 9 Sep 2010 06:25:47 -0700, Guenter Roeck wrote:
> Signed-off-by: Guenter Roeck <guenter.roeck@...csson.com>
> ---
> drivers/hwmon/lm90.c | 55 +++++++++++++++++++++++++------------------------
> 1 files changed, 28 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
> index f21dde5..11b5701 100644
> --- a/drivers/hwmon/lm90.c
> +++ b/drivers/hwmon/lm90.c
> @@ -418,7 +418,7 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
> static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
> char *buf)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> + struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
> struct lm90_data *data = lm90_update_device(dev);
> int temp;
>
> @@ -439,19 +439,20 @@ static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
> static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
> const char *buf, size_t count)
> {
> - static const u8 reg[6] = {
> - LM90_REG_W_REMOTE_LOWH,
> - LM90_REG_W_REMOTE_LOWL,
> - LM90_REG_W_REMOTE_HIGHH,
> - LM90_REG_W_REMOTE_HIGHL,
> - LM90_REG_W_REMOTE_OFFSH,
> - LM90_REG_W_REMOTE_OFFSL,
> + struct {
> + u8 high;
> + u8 low;
> + } reg[3] = {
> + { LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL },
> + { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL },
> + { LM90_REG_W_REMOTE_OFFSH, LM90_REG_W_REMOTE_OFFSL }
> };
>
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> + struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
> struct i2c_client *client = to_i2c_client(dev);
> struct lm90_data *data = i2c_get_clientdata(client);
> - int nr = attr->index;
> + int nr = attr->nr;
> + int index = attr->index;
> long val;
> int err;
>
> @@ -460,24 +461,24 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
> return err;
>
> /* +16 degrees offset for temp2 for the LM99 */
> - if (data->kind == lm99 && attr->index <= 2)
> + if (data->kind == lm99 && index <= 2)
> val -= 16000;
>
> mutex_lock(&data->update_lock);
> if (data->kind == adt7461)
> - data->temp11[nr] = temp_to_u16_adt7461(data, val);
> + data->temp11[index] = temp_to_u16_adt7461(data, val);
> else if (data->kind == max6646)
> - data->temp11[nr] = temp_to_u8(val) << 8;
> + data->temp11[index] = temp_to_u8(val) << 8;
> else if (!(data->flags & LM90_HAVE_REM_LIMIT_EXT))
> - data->temp11[nr] = temp_to_s8(val) << 8;
> + data->temp11[index] = temp_to_s8(val) << 8;
> else
> - data->temp11[nr] = temp_to_s16(val);
> + data->temp11[index] = temp_to_s16(val);
>
> - i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
> - data->temp11[nr] >> 8);
> + i2c_smbus_write_byte_data(client, reg[nr].high,
> + data->temp11[index] >> 8);
> if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
> - i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
> - data->temp11[nr] & 0xff);
> + i2c_smbus_write_byte_data(client, reg[nr].low,
> + data->temp11[index] & 0xff);
> mutex_unlock(&data->update_lock);
> return count;
> }
> @@ -549,16 +550,16 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute
> return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
> }
>
> -static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 4);
> -static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
> +static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp11, NULL, 0, 4);
> +static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp11, NULL, 0, 0);
> static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8,
> set_temp8, 0);
> -static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
> - set_temp11, 1);
> +static SENSOR_DEVICE_ATTR_2(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
> + set_temp11, 0, 1);
> static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
> set_temp8, 1);
> -static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
> - set_temp11, 2);
> +static SENSOR_DEVICE_ATTR_2(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
> + set_temp11, 1, 2);
> static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8,
> set_temp8, 2);
> static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
> @@ -566,8 +567,8 @@ static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
> static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
> set_temphyst, 2);
> static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 3);
> -static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
> - set_temp11, 3);
> +static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
> + set_temp11, 2, 3);
>
> /* Individual alarm files */
> static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 0);
Looks good, applied, thanks.
--
Jean Delvare
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