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Commit 00030af2 authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
Browse files

hwmon: (w83795) Exclude fan control feature by default



The fan control feature of the w83795 driver is insufficiently
reviewed and tested for public consumption at this time, so make it
optional and disabled by default. We will change the default when
review and testing is deemed sufficient. Ultimately the option will
go away.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Acked-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
parent e3760b43
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+17 −0
Original line number Diff line number Diff line
@@ -1041,6 +1041,23 @@ config SENSORS_W83795
	  This driver can also be built as a module.  If so, the module
	  will be called w83795.

config SENSORS_W83795_FANCTRL
	boolean "Include fan control support (DANGEROUS)"
	depends on SENSORS_W83795 && EXPERIMENTAL
	default n
	help
	  If you say yes here, support for the both manual and automatic
	  fan control features will be included in the driver.

	  This part of the code wasn't carefully reviewed and tested yet,
	  so enabling this option is strongly discouraged on production
	  servers. Only developers and testers should enable it for the
	  time being.

	  Please also note that this option will create sysfs attribute
	  files which may change in the future, so you shouldn't rely
	  on them being stable.

config SENSORS_W83L785TS
	tristate "Winbond W83L785TS-S"
	depends on I2C && EXPERIMENTAL
+10 −0
Original line number Diff line number Diff line
@@ -1455,6 +1455,7 @@ store_in(struct device *dev, struct device_attribute *attr,
}


#ifdef CONFIG_SENSORS_W83795_FANCTRL
static ssize_t
show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
{
@@ -1506,6 +1507,7 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
	mutex_unlock(&data->update_lock);
	return count;
}
#endif


#define NOT_USED			-1
@@ -1711,6 +1713,7 @@ static const struct sensor_device_attribute_2 sda_single_files[] = {
		      store_chassis_clear, ALARM_STATUS, 46),
	SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
		      store_beep, BEEP_ENABLE, 47),
#ifdef CONFIG_SENSORS_W83795_FANCTRL
	SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
		store_fanin, FANIN_TOL, NOT_USED),
	SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
@@ -1719,6 +1722,7 @@ static const struct sensor_device_attribute_2 sda_single_files[] = {
		      store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
	SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
		      store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
#endif
};

/*
@@ -1872,6 +1876,7 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
			return err;
	}

#ifdef CONFIG_SENSORS_W83795_FANCTRL
	for (i = 0; i < data->has_pwm; i++) {
		for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
			err = fn(dev, &w83795_pwm[i][j].dev_attr);
@@ -1879,11 +1884,16 @@ static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
				return err;
		}
	}
#endif

	for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
		if (!(data->has_temp & (1 << i)))
			continue;
#ifdef CONFIG_SENSORS_W83795_FANCTRL
		for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
#else
		for (j = 0; j < 8; j++) {
#endif
			err = fn(dev, &w83795_temp[i][j].dev_attr);
			if (err)
				return err;