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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (lm95241) Replace rate sysfs attribute with update_interval
  hwmon: (adm1031) Replace update_rate sysfs attribute with update_interval
  hwmon: (w83627ehf) Use proper exit sequence
  hwmon: (emc1403) Remove unnecessary hwmon_device_unregister
  hwmon: (f75375s) Do not overwrite values read from registers
  hwmon: (f75375s) Shift control mode to the correct bit position
  hwmon: New subsystem maintainers
  hwmon: (lis3lv02d) Prevent NULL pointer dereference
This commit is contained in:
Linus Torvalds 2010-09-17 10:25:47 -07:00
parent 80214df8db bc482bf0ce
commit 509344b8b4
9 changed files with 50 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/hwmon/sysfs-interface
View File

@ -91,12 +91,11 @@ name The chip name.
I2C devices get this attribute created automatically.
RO
update_rate The rate at which the chip will update readings.
update_interval The interval at which the chip will update readings.
Unit: millisecond
RW
Some devices have a variable update rate. This attribute
can be used to change the update rate to the desired
frequency.
Some devices have a variable update rate or interval.
This attribute can be used to change it to the desired value.
************

5
MAINTAINERS
View File

@ -2657,9 +2657,12 @@ S: Maintained
F: drivers/media/video/gspca/
HARDWARE MONITORING
M: Jean Delvare <khali@linux-fr.org>
M: Guenter Roeck <guenter.roeck@ericsson.com>
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.org/
S: Orphan
T: quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-hwmon/
S: Maintained
F: Documentation/hwmon/
F: drivers/hwmon/
F: include/linux/hwmon*.h

43
drivers/hwmon/adm1031.c
View File

@ -79,7 +79,7 @@ struct adm1031_data {
int chip_type;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
unsigned int update_rate; /* In milliseconds */
unsigned int update_interval; /* In milliseconds */
/* The chan_select_table contains the possible configurations for
* auto fan control.
*/
@ -743,23 +743,23 @@ static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 13);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 14);
/* Update Rate */
static const unsigned int update_rates[] = {
/* Update Interval */
static const unsigned int update_intervals[] = {
16000, 8000, 4000, 2000, 1000, 500, 250, 125,
};
static ssize_t show_update_rate(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t show_update_interval(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm1031_data *data = i2c_get_clientdata(client);
return sprintf(buf, "%u\n", data->update_rate);
return sprintf(buf, "%u\n", data->update_interval);
}
static ssize_t set_update_rate(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
static ssize_t set_update_interval(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm1031_data *data = i2c_get_clientdata(client);
@ -771,12 +771,15 @@ static ssize_t set_update_rate(struct device *dev,
if (err)
return err;
/* find the nearest update rate from the table */
for (i = 0; i < ARRAY_SIZE(update_rates) - 1; i++) {
if (val >= update_rates[i])
/*
* Find the nearest update interval from the table.
* Use it to determine the matching update rate.
*/
for (i = 0; i < ARRAY_SIZE(update_intervals) - 1; i++) {
if (val >= update_intervals[i])
break;
}
/* if not found, we point to the last entry (lowest update rate) */
/* if not found, we point to the last entry (lowest update interval) */
/* set the new update rate while preserving other settings */
reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
@ -785,14 +788,14 @@ static ssize_t set_update_rate(struct device *dev,
adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg);
mutex_lock(&data->update_lock);
data->update_rate = update_rates[i];
data->update_interval = update_intervals[i];
mutex_unlock(&data->update_lock);
return count;
}
static DEVICE_ATTR(update_rate, S_IRUGO | S_IWUSR, show_update_rate,
set_update_rate);
static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
set_update_interval);
static struct attribute *adm1031_attributes[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
@ -830,7 +833,7 @@ static struct attribute *adm1031_attributes[] = {
&sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr,
&dev_attr_update_rate.attr,
&dev_attr_update_interval.attr,
&dev_attr_alarms.attr,
NULL
@ -981,7 +984,8 @@ static void adm1031_init_client(struct i2c_client *client)
mask = ADM1031_UPDATE_RATE_MASK;
read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT;
data->update_rate = update_rates[i];
/* Save it as update interval */
data->update_interval = update_intervals[i];
}
static struct adm1031_data *adm1031_update_device(struct device *dev)
@ -993,7 +997,8 @@ static struct adm1031_data *adm1031_update_device(struct device *dev)
mutex_lock(&data->update_lock);
next_update = data->last_updated + msecs_to_jiffies(data->update_rate);
next_update = data->last_updated
+ msecs_to_jiffies(data->update_interval);
if (time_after(jiffies, next_update) || !data->valid) {
dev_dbg(&client->dev, "Starting adm1031 update\n");

1
drivers/hwmon/emc1403.c
View File

@ -308,7 +308,6 @@ static int emc1403_probe(struct i2c_client *client,
res = sysfs_create_group(&client->dev.kobj, &m_thermal_gr);
if (res) {
dev_warn(&client->dev, "create group failed\n");
hwmon_device_unregister(data->hwmon_dev);
goto thermal_error1;
}
data->hwmon_dev = hwmon_device_register(&client->dev);

6
drivers/hwmon/f75375s.c
View File

@ -79,7 +79,7 @@ enum chips { f75373, f75375 };
#define F75375_REG_PWM2_DROP_DUTY 0x6C
#define FAN_CTRL_LINEAR(nr) (4 + nr)
#define FAN_CTRL_MODE(nr) (5 + ((nr) * 2))
#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
/*
* Data structures and manipulation thereof
@ -298,7 +298,7 @@ static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
return -EINVAL;
fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
fanmode = ~(3 << FAN_CTRL_MODE(nr));
fanmode &= ~(3 << FAN_CTRL_MODE(nr));
switch (val) {
case 0: /* Full speed */
@ -350,7 +350,7 @@ static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->update_lock);
conf = f75375_read8(client, F75375_REG_CONFIG1);
conf = ~(1 << FAN_CTRL_LINEAR(nr));
conf &= ~(1 << FAN_CTRL_LINEAR(nr));
if (val == 0)
conf |= (1 << FAN_CTRL_LINEAR(nr)) ;

4
drivers/hwmon/lis3lv02d_i2c.c
View File

@ -121,7 +121,7 @@ static int lis3lv02d_i2c_suspend(struct i2c_client *client, pm_message_t mesg)
{
struct lis3lv02d *lis3 = i2c_get_clientdata(client);
if (!lis3->pdata->wakeup_flags)
if (!lis3->pdata || !lis3->pdata->wakeup_flags)
lis3lv02d_poweroff(lis3);
return 0;
}
@ -130,7 +130,7 @@ static int lis3lv02d_i2c_resume(struct i2c_client *client)
{
struct lis3lv02d *lis3 = i2c_get_clientdata(client);
if (!lis3->pdata->wakeup_flags)
if (!lis3->pdata || !lis3->pdata->wakeup_flags)
lis3lv02d_poweron(lis3);
return 0;
}

4
drivers/hwmon/lis3lv02d_spi.c
View File

@ -92,7 +92,7 @@ static int lis3lv02d_spi_suspend(struct spi_device *spi, pm_message_t mesg)
{
struct lis3lv02d *lis3 = spi_get_drvdata(spi);
if (!lis3->pdata->wakeup_flags)
if (!lis3->pdata || !lis3->pdata->wakeup_flags)
lis3lv02d_poweroff(&lis3_dev);
return 0;
@ -102,7 +102,7 @@ static int lis3lv02d_spi_resume(struct spi_device *spi)
{
struct lis3lv02d *lis3 = spi_get_drvdata(spi);
if (!lis3->pdata->wakeup_flags)
if (!lis3->pdata || !lis3->pdata->wakeup_flags)
lis3lv02d_poweron(lis3);
return 0;

21
drivers/hwmon/lm95241.c
View File

@ -91,7 +91,7 @@ static struct lm95241_data *lm95241_update_device(struct device *dev);
struct lm95241_data {
struct device *hwmon_dev;
struct mutex update_lock;
unsigned long last_updated, rate; /* in jiffies */
unsigned long last_updated, interval; /* in jiffies */
char valid; /* zero until following fields are valid */
/* registers values */
u8 local_h, local_l; /* local */
@ -114,23 +114,23 @@ show_temp(local);
show_temp(remote1);
show_temp(remote2);
static ssize_t show_rate(struct device *dev, struct device_attribute *attr,
static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct lm95241_data *data = lm95241_update_device(dev);
snprintf(buf, PAGE_SIZE - 1, "%lu\n", 1000 * data->rate / HZ);
snprintf(buf, PAGE_SIZE - 1, "%lu\n", 1000 * data->interval / HZ);
return strlen(buf);
}
static ssize_t set_rate(struct device *dev, struct device_attribute *attr,
static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm95241_data *data = i2c_get_clientdata(client);
strict_strtol(buf, 10, &data->rate);
data->rate = data->rate * HZ / 1000;
strict_strtol(buf, 10, &data->interval);
data->interval = data->interval * HZ / 1000;
return count;
}
@ -286,7 +286,8 @@ static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_min1, set_min1);
static DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_min2, set_min2);
static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_max1, set_max1);
static DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max2, set_max2);
static DEVICE_ATTR(rate, S_IWUSR | S_IRUGO, show_rate, set_rate);
static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
set_interval);
static struct attribute *lm95241_attributes[] = {
&dev_attr_temp1_input.attr,
@ -298,7 +299,7 @@ static struct attribute *lm95241_attributes[] = {
&dev_attr_temp3_min.attr,
&dev_attr_temp2_max.attr,
&dev_attr_temp3_max.attr,
&dev_attr_rate.attr,
&dev_attr_update_interval.attr,
NULL
};
@ -376,7 +377,7 @@ static void lm95241_init_client(struct i2c_client *client)
{
struct lm95241_data *data = i2c_get_clientdata(client);
data->rate = HZ; /* 1 sec default */
data->interval = HZ; /* 1 sec default */
data->valid = 0;
data->config = CFG_CR0076;
data->model = 0;
@ -410,7 +411,7 @@ static struct lm95241_data *lm95241_update_device(struct device *dev)
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + data->rate) ||
if (time_after(jiffies, data->last_updated + data->interval) ||
!data->valid) {
dev_dbg(&client->dev, "Updating lm95241 data.\n");
data->local_h =

1
drivers/hwmon/w83627ehf.c
View File

@ -127,6 +127,7 @@ superio_enter(int ioreg)
static inline void
superio_exit(int ioreg)
{
outb(0xaa, ioreg);
outb(0x02, ioreg);
outb(0x02, ioreg + 1);
}