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path: root/drivers/hwmon/w83793.c
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Diffstat (limited to 'drivers/hwmon/w83793.c')
-rw-r--r--drivers/hwmon/w83793.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 8e540ada47d2..e3bdedfb5347 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -51,7 +51,6 @@
#define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */
/* Addresses to scan */
-static DEFINE_MUTEX(watchdog_mutex);
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
I2C_CLIENT_END };
@@ -421,14 +420,17 @@ store_beep_enable(struct device *dev, struct device_attribute *attr,
/* Write any value to clear chassis alarm */
static ssize_t
-store_chassis_clear(struct device *dev,
- struct device_attribute *attr, const char *buf,
- size_t count)
+store_chassis_clear_legacy(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct w83793_data *data = i2c_get_clientdata(client);
u8 val;
+ dev_warn(dev, "Attribute chassis is deprecated, "
+ "use intrusion0_alarm instead\n");
+
mutex_lock(&data->update_lock);
val = w83793_read_value(client, W83793_REG_CLR_CHASSIS);
val |= 0x80;
@@ -437,6 +439,28 @@ store_chassis_clear(struct device *dev,
return count;
}
+/* Write 0 to clear chassis alarm */
+static ssize_t
+store_chassis_clear(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct w83793_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ u8 reg;
+
+ if (strict_strtoul(buf, 10, &val) || val != 0)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ reg = w83793_read_value(client, W83793_REG_CLR_CHASSIS);
+ w83793_write_value(client, W83793_REG_CLR_CHASSIS, reg | 0x80);
+ data->valid = 0; /* Force cache refresh */
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
#define FAN_INPUT 0
#define FAN_MIN 1
static ssize_t
@@ -1102,6 +1126,8 @@ static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm);
static struct sensor_device_attribute_2 sda_single_files[] = {
SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
+ store_chassis_clear_legacy, ALARM_STATUS, 30),
+ SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
store_chassis_clear, ALARM_STATUS, 30),
SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
store_beep_enable, NOT_USED, NOT_USED),
@@ -1323,7 +1349,7 @@ static ssize_t watchdog_write(struct file *filp, const char __user *buf,
static long watchdog_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
- static struct watchdog_info ident = {
+ struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_CARDRESET,
@@ -1333,7 +1359,6 @@ static long watchdog_ioctl(struct file *filp, unsigned int cmd,
int val, ret = 0;
struct w83793_data *data = filp->private_data;
- mutex_lock(&watchdog_mutex);
switch (cmd) {
case WDIOC_GETSUPPORT:
if (!nowayout)
@@ -1387,7 +1412,6 @@ static long watchdog_ioctl(struct file *filp, unsigned int cmd,
default:
ret = -ENOTTY;
}
- mutex_unlock(&watchdog_mutex);
return ret;
}