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Date: Thu, 11 Jul 2013 16:42:01 +0800
From: Wei Ni <wni@...dia.com>
To: Guenter Roeck <linux@...ck-us.net>
CC: "khali@...ux-fr.org" <khali@...ux-fr.org>,
"swarren@...dotorg.org" <swarren@...dotorg.org>,
"thierry.reding@...il.com" <thierry.reding@...il.com>,
"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] hwmon: (lm90) split set&show temp as common codes
On 07/11/2013 02:21 AM, Guenter Roeck wrote:
> On Wed, Jul 10, 2013 at 07:25:37PM +0800, Wei Ni wrote:
>> Split set&show temp codes as common functions, so we can use it directly when
>> implement linux thermal framework.
>>
>> Signed-off-by: Wei Ni <wni@...dia.com>
>> ---
>> drivers/hwmon/lm90.c | 118 ++++++++++++++++++++++++++++++++------------------
>> 1 file changed, 75 insertions(+), 43 deletions(-)
>>
>> diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
>> index 8eeb141..2cb7f8e 100644
>> --- a/drivers/hwmon/lm90.c
>> +++ b/drivers/hwmon/lm90.c
>> @@ -702,29 +702,37 @@ static u16 temp_to_u16_adt7461(struct lm90_data *data, long val)
>> * Sysfs stuff
>> */
>>
>> -static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
>> - char *buf)
>> +static int read_temp8(struct device *dev, int index)
>> {
>> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> - struct lm90_data *data = lm90_update_device(dev);
>> int temp;
>> + struct lm90_data *data = lm90_update_device(dev);
>>
> Why this reordering of variables ?
Oh, I didn't noticed it yet, thanks for your review, I will change it.
>
>> if (data->kind == adt7461)
>> - temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
>> + temp = temp_from_u8_adt7461(data, data->temp8[index]);
>> else if (data->kind == max6646)
>> - temp = temp_from_u8(data->temp8[attr->index]);
>> + temp = temp_from_u8(data->temp8[index]);
>> else
>> - temp = temp_from_s8(data->temp8[attr->index]);
>> + temp = temp_from_s8(data->temp8[index]);
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> - if (data->kind == lm99 && attr->index == 3)
>> + if (data->kind == lm99 && index == 3)
>> temp += 16000;
>>
>> + return temp;
>> +}
>> +
>> +static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
>> + char *buf)
>> +{
>> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> + int temp;
>> +
>> + temp = read_temp8(dev, attr->index);
>> +
>> return sprintf(buf, "%d\n", temp);
>
> Might as well simplify with
> return sprintf(buf, "%d\n", read_temp8(dev, attr->index));
Ok, I will update it.
>
>> }
>>
>> -static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
>> - const char *buf, size_t count)
>> +static void write_temp8(struct device *dev, int index, long val)
>> {
>> static const u8 reg[8] = {
>> LM90_REG_W_LOCAL_LOW,
>> @@ -737,60 +745,76 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
>> MAX6659_REG_W_REMOTE_EMERG,
>> };
>>
>> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> struct i2c_client *client = to_i2c_client(dev);
>> struct lm90_data *data = i2c_get_clientdata(client);
>> - int nr = attr->index;
>> - long val;
>> - int err;
>> -
>> - err = kstrtol(buf, 10, &val);
>> - if (err < 0)
>> - return err;
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> - if (data->kind == lm99 && attr->index == 3)
>> + if (data->kind == lm99 && index == 3)
>> val -= 16000;
>>
>> mutex_lock(&data->update_lock);
>> if (data->kind == adt7461)
>> - data->temp8[nr] = temp_to_u8_adt7461(data, val);
>> + data->temp8[index] = temp_to_u8_adt7461(data, val);
>> else if (data->kind == max6646)
>> - data->temp8[nr] = temp_to_u8(val);
>> + data->temp8[index] = temp_to_u8(val);
>> else
>> - data->temp8[nr] = temp_to_s8(val);
>> + data->temp8[index] = temp_to_s8(val);
>>
>> - lm90_select_remote_channel(client, data, nr >= 6);
>> - i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
>> + lm90_select_remote_channel(client, data, index >= 6);
>> + i2c_smbus_write_byte_data(client, reg[index], data->temp8[index]);
>> lm90_select_remote_channel(client, data, 0);
>>
>> mutex_unlock(&data->update_lock);
>> +}
>> +
>> +static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
>> + const char *buf, size_t count)
>> +{
>> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> + int index = attr->index;
>> + long val;
>> + int err;
>> +
>> + err = kstrtol(buf, 10, &val);
>> + if (err < 0)
>> + return err;
>> +
>> + write_temp8(dev, index, val);
>> +
>> return count;
>> }
>>
>> -static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
>> - char *buf)
>> +static int read_temp11(struct device *dev, int index)
>> {
>> - struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
>> - struct lm90_data *data = lm90_update_device(dev);
>> int temp;
>> + struct lm90_data *data = lm90_update_device(dev);
>>
> Another unnecessary variable reorder.
>
>> if (data->kind == adt7461)
>> - temp = temp_from_u16_adt7461(data, data->temp11[attr->index]);
>> + temp = temp_from_u16_adt7461(data, data->temp11[index]);
>> else if (data->kind == max6646)
>> - temp = temp_from_u16(data->temp11[attr->index]);
>> + temp = temp_from_u16(data->temp11[index]);
>> else
>> - temp = temp_from_s16(data->temp11[attr->index]);
>> + temp = temp_from_s16(data->temp11[index]);
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> - if (data->kind == lm99 && attr->index <= 2)
>> + if (data->kind == lm99 && index <= 2)
>> temp += 16000;
>>
>> + return temp;
>> +}
>> +
>> +static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
>> + char *buf)
>> +{
>> + struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
>> + int temp;
>> +
>> + temp = read_temp11(dev, attr->index);
>> +
>> return sprintf(buf, "%d\n", temp);
>
> Same simplification as above.
>
>> }
>>
>> -static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
>> - const char *buf, size_t count)
>> +static void write_temp11(struct device *dev, int nr, int index, long val)
>> {
>> struct {
>> u8 high;
>> @@ -804,17 +828,8 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
>> { LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 1 }
>> };
>>
>> - 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->nr;
>> - int index = attr->index;
>> - long val;
>> - int err;
>> -
>> - err = kstrtol(buf, 10, &val);
>> - if (err < 0)
>> - return err;
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> if (data->kind == lm99 && index <= 2)
>> @@ -839,6 +854,23 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
>> lm90_select_remote_channel(client, data, 0);
>>
>> mutex_unlock(&data->update_lock);
>> +}
>> +
>> +static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
>> + const char *buf, size_t count)
>> +{
>> + struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
>> + int nr = attr->nr;
>> + int index = attr->index;
>> + long val;
>> + int err;
>> +
>> + err = kstrtol(buf, 10, &val);
>> + if (err < 0)
>> + return err;
>> +
>> + write_temp11(dev, nr, index, val);
>> +
>> return count;
>> }
>>
>> --
>> 1.7.9.5
>>
>>
--
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