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hwmon: (lm77) Fix checkpatch issues

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Fixed:
ERROR: code indent should use tabs where possible
ERROR: do not use assignment in if condition
ERROR: trailing whitespace
WARNING: line over 80 characters
WARNING: please, no space before tabs
WARNING: simple_strtol is obsolete, use kstrtol instead
WARNING: simple_strtoul is obsolete, use kstrtoul instead

Modify multi-line comments to follow Documentation/CodingStyle.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2012-01-14 13:42:20 -08:00 committed by Guenter Roeck
parent f445a9af93
commit 02fe2fd949
1 changed files with 95 additions and 64 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

159
drivers/hwmon/lm77.c
View file

@ -1,29 +1,29 @@
/*
lm77.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
is a temperature sensor and thermal window comparator with 0.5 deg
resolution made by National Semiconductor. Complete datasheet can be
obtained at their site:
http://www.national.com/pf/LM/LM77.html
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
* lm77.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
*
* Copyright (c) 2004 Andras BALI <drewie@freemail.hu>
*
* Heavily based on lm75.c by Frodo Looijaard <frodol@dds.nl>. The LM77
* is a temperature sensor and thermal window comparator with 0.5 deg
* resolution made by National Semiconductor. Complete datasheet can be
* obtained at their site:
* http://www.national.com/pf/LM/LM77.html
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/init.h>
@ -49,7 +49,7 @@ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
/* Each client has this additional data */
struct lm77_data {
struct device *hwmon_dev;
struct device *hwmon_dev;
struct mutex update_lock;
char valid;
unsigned long last_updated; /* In jiffies */
@ -95,8 +95,10 @@ static struct i2c_driver lm77_driver = {
#define LM77_TEMP_MIN (-55000)
#define LM77_TEMP_MAX 125000
/* In the temperature registers, the low 3 bits are not part of the
temperature values; they are the status bits. */
/*
* In the temperature registers, the low 3 bits are not part of the
* temperature values; they are the status bits.
*/
static inline s16 LM77_TEMP_TO_REG(int temp)
{
int ntemp = SENSORS_LIMIT(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
@ -112,7 +114,9 @@ static inline int LM77_TEMP_FROM_REG(s16 reg)
/* read routines for temperature limits */
#define show(value) \
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
static ssize_t show_##value(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct lm77_data *data = lm77_update_device(dev); \
return sprintf(buf, "%d\n", data->value); \
@ -124,17 +128,20 @@ show(temp_min);
show(temp_max);
/* read routines for hysteresis values */
static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_temp_crit_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lm77_data *data = lm77_update_device(dev);
return sprintf(buf, "%d\n", data->temp_crit - data->temp_hyst);
}
static ssize_t show_temp_min_hyst(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_temp_min_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lm77_data *data = lm77_update_device(dev);
return sprintf(buf, "%d\n", data->temp_min + data->temp_hyst);
}
static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_temp_max_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lm77_data *data = lm77_update_device(dev);
return sprintf(buf, "%d\n", data->temp_max - data->temp_hyst);
@ -142,29 +149,42 @@ static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute *a
/* write routines */
#define set(value, reg) \
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm77_data *data = i2c_get_clientdata(client); \
long val = simple_strtol(buf, NULL, 10); \
\
mutex_lock(&data->update_lock); \
data->value = val; \
lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
mutex_unlock(&data->update_lock); \
return count; \
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm77_data *data = i2c_get_clientdata(client); \
long val; \
int err = kstrtol(buf, 10, &val); \
if (err) \
return err; \
\
mutex_lock(&data->update_lock); \
data->value = val; \
lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
mutex_unlock(&data->update_lock); \
return count; \
}
set(temp_min, LM77_REG_TEMP_MIN);
set(temp_max, LM77_REG_TEMP_MAX);
/* hysteresis is stored as a relative value on the chip, so it has to be
converted first */
static ssize_t set_temp_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
/*
* hysteresis is stored as a relative value on the chip, so it has to be
* converted first
*/
static ssize_t set_temp_crit_hyst(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm77_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->temp_hyst = data->temp_crit - val;
@ -175,13 +195,19 @@ static ssize_t set_temp_crit_hyst(struct device *dev, struct device_attribute *a
}
/* preserve hysteresis when setting T_crit */
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm77_data *data = i2c_get_clientdata(client);
long val = simple_strtoul(buf, NULL, 10);
int oldcrithyst;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
oldcrithyst = data->temp_crit - data->temp_hyst;
data->temp_crit = val;
@ -251,17 +277,19 @@ static int lm77_detect(struct i2c_client *new_client,
I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
/* Here comes the remaining detection. Since the LM77 has no
register dedicated to identification, we have to rely on the
following tricks:
1. the high 4 bits represent the sign and thus they should
always be the same
2. the high 3 bits are unused in the configuration register
3. addresses 0x06 and 0x07 return the last read value
4. registers cycling over 8-address boundaries
Word-sized registers are high-byte first. */
/*
* Here comes the remaining detection. Since the LM77 has no
* register dedicated to identification, we have to rely on the
* following tricks:
*
* 1. the high 4 bits represent the sign and thus they should
* always be the same
* 2. the high 3 bits are unused in the configuration register
* 3. addresses 0x06 and 0x07 return the last read value
* 4. registers cycling over 8-address boundaries
*
* Word-sized registers are high-byte first.
*/
/* addresses cycling */
cur = i2c_smbus_read_word_data(new_client, 0);
@ -330,7 +358,8 @@ static int lm77_probe(struct i2c_client *new_client,
lm77_init_client(new_client);
/* Register sysfs hooks */
if ((err = sysfs_create_group(&new_client->dev.kobj, &lm77_group)))
err = sysfs_create_group(&new_client->dev.kobj, &lm77_group);
if (err)
goto exit_free;
data->hwmon_dev = hwmon_device_register(&new_client->dev);
@ -358,8 +387,10 @@ static int lm77_remove(struct i2c_client *client)
return 0;
}
/* All registers are word-sized, except for the configuration register.
The LM77 uses the high-byte first convention. */
/*
* All registers are word-sized, except for the configuration register.
* The LM77 uses the high-byte first convention.
*/
static u16 lm77_read_value(struct i2c_client *client, u8 reg)
{
if (reg == LM77_REG_CONF)