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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt4
-rw-r--r--drivers/acpi/ac.c27
-rw-r--r--drivers/acpi/acpi_video.c20
-rw-r--r--drivers/acpi/battery.c24
-rw-r--r--drivers/acpi/bus.c28
-rw-r--r--drivers/acpi/hed.c15
-rw-r--r--drivers/acpi/nfit/core.c42
-rw-r--r--drivers/acpi/thermal.c470
-rw-r--r--drivers/thermal/thermal_core.c22
-rw-r--r--drivers/thermal/thermal_core.h4
-rw-r--r--drivers/thermal/thermal_trip.c18
-rw-r--r--include/acpi/acpi_bus.h6
-rw-r--r--include/linux/thermal.h9
13 files changed, 385 insertions, 304 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a1457995fd41..2de235d52fac 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -6243,10 +6243,6 @@
-1: disable all critical trip points in all thermal zones
<degrees C>: override all critical trip points
- thermal.nocrt= [HW,ACPI]
- Set to disable actions on ACPI thermal zone
- critical and hot trip points.
-
thermal.off= [HW,ACPI]
1: disable ACPI thermal control
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 1ace70b831cd..225dc6818751 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -34,7 +34,7 @@ MODULE_LICENSE("GPL");
static int acpi_ac_add(struct acpi_device *device);
static void acpi_ac_remove(struct acpi_device *device);
-static void acpi_ac_notify(struct acpi_device *device, u32 event);
+static void acpi_ac_notify(acpi_handle handle, u32 event, void *data);
static const struct acpi_device_id ac_device_ids[] = {
{"ACPI0003", 0},
@@ -54,11 +54,9 @@ static struct acpi_driver acpi_ac_driver = {
.name = "ac",
.class = ACPI_AC_CLASS,
.ids = ac_device_ids,
- .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_ac_add,
.remove = acpi_ac_remove,
- .notify = acpi_ac_notify,
},
.drv.pm = &acpi_ac_pm,
};
@@ -128,8 +126,9 @@ static enum power_supply_property ac_props[] = {
};
/* Driver Model */
-static void acpi_ac_notify(struct acpi_device *device, u32 event)
+static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
{
+ struct acpi_device *device = data;
struct acpi_ac *ac = acpi_driver_data(device);
if (!ac)
@@ -235,7 +234,7 @@ static int acpi_ac_add(struct acpi_device *device)
result = acpi_ac_get_state(ac);
if (result)
- goto end;
+ goto err_release_ac;
psy_cfg.drv_data = ac;
@@ -248,7 +247,7 @@ static int acpi_ac_add(struct acpi_device *device)
&ac->charger_desc, &psy_cfg);
if (IS_ERR(ac->charger)) {
result = PTR_ERR(ac->charger);
- goto end;
+ goto err_release_ac;
}
pr_info("%s [%s] (%s)\n", acpi_device_name(device),
@@ -256,9 +255,19 @@ static int acpi_ac_add(struct acpi_device *device)
ac->battery_nb.notifier_call = acpi_ac_battery_notify;
register_acpi_notifier(&ac->battery_nb);
-end:
+
+ result = acpi_dev_install_notify_handler(device, ACPI_ALL_NOTIFY,
+ acpi_ac_notify);
if (result)
- kfree(ac);
+ goto err_unregister;
+
+ return 0;
+
+err_unregister:
+ power_supply_unregister(ac->charger);
+ unregister_acpi_notifier(&ac->battery_nb);
+err_release_ac:
+ kfree(ac);
return result;
}
@@ -297,6 +306,8 @@ static void acpi_ac_remove(struct acpi_device *device)
ac = acpi_driver_data(device);
+ acpi_dev_remove_notify_handler(device, ACPI_ALL_NOTIFY,
+ acpi_ac_notify);
power_supply_unregister(ac->charger);
unregister_acpi_notifier(&ac->battery_nb);
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 62f4364e4460..6760303def6f 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -77,7 +77,7 @@ static DEFINE_MUTEX(video_list_lock);
static LIST_HEAD(video_bus_head);
static int acpi_video_bus_add(struct acpi_device *device);
static void acpi_video_bus_remove(struct acpi_device *device);
-static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
+static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data);
/*
* Indices in the _BCL method response: the first two items are special,
@@ -104,7 +104,6 @@ static struct acpi_driver acpi_video_bus = {
.ops = {
.add = acpi_video_bus_add,
.remove = acpi_video_bus_remove,
- .notify = acpi_video_bus_notify,
},
};
@@ -1527,8 +1526,9 @@ static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
acpi_osi_is_win8() ? 0 : 1);
}
-static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
+static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
{
+ struct acpi_device *device = data;
struct acpi_video_bus *video = acpi_driver_data(device);
struct input_dev *input;
int keycode = 0;
@@ -2053,8 +2053,19 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_video_bus_add_notify_handler(video);
+ error = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_video_bus_notify);
+ if (error)
+ goto err_remove;
+
return 0;
+err_remove:
+ mutex_lock(&video_list_lock);
+ list_del(&video->entry);
+ mutex_unlock(&video_list_lock);
+ acpi_video_bus_remove_notify_handler(video);
+ acpi_video_bus_unregister_backlight(video);
err_put_video:
acpi_video_bus_put_devices(video);
kfree(video->attached_array);
@@ -2075,6 +2086,9 @@ static void acpi_video_bus_remove(struct acpi_device *device)
video = acpi_driver_data(device);
+ acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_video_bus_notify);
+
mutex_lock(&video_list_lock);
list_del(&video->entry);
mutex_unlock(&video_list_lock);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 9c67ed02d797..969bf81e8d54 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -1034,8 +1034,9 @@ static void acpi_battery_refresh(struct acpi_battery *battery)
}
/* Driver Interface */
-static void acpi_battery_notify(struct acpi_device *device, u32 event)
+static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
{
+ struct acpi_device *device = data;
struct acpi_battery *battery = acpi_driver_data(device);
struct power_supply *old;
@@ -1212,13 +1213,22 @@ static int acpi_battery_add(struct acpi_device *device)
device_init_wakeup(&device->dev, 1);
- return result;
+ result = acpi_dev_install_notify_handler(device, ACPI_ALL_NOTIFY,
+ acpi_battery_notify);
+ if (result)
+ goto fail_pm;
+
+ return 0;
+fail_pm:
+ device_init_wakeup(&device->dev, 0);
+ unregister_pm_notifier(&battery->pm_nb);
fail:
sysfs_remove_battery(battery);
mutex_destroy(&battery->lock);
mutex_destroy(&battery->sysfs_lock);
kfree(battery);
+
return result;
}
@@ -1228,10 +1238,16 @@ static void acpi_battery_remove(struct acpi_device *device)
if (!device || !acpi_driver_data(device))
return;
- device_init_wakeup(&device->dev, 0);
+
battery = acpi_driver_data(device);
+
+ acpi_dev_remove_notify_handler(device, ACPI_ALL_NOTIFY,
+ acpi_battery_notify);
+
+ device_init_wakeup(&device->dev, 0);
unregister_pm_notifier(&battery->pm_nb);
sysfs_remove_battery(battery);
+
mutex_destroy(&battery->lock);
mutex_destroy(&battery->sysfs_lock);
kfree(battery);
@@ -1264,11 +1280,9 @@ static struct acpi_driver acpi_battery_driver = {
.name = "battery",
.class = ACPI_BATTERY_CLASS,
.ids = battery_device_ids,
- .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_battery_add,
.remove = acpi_battery_remove,
- .notify = acpi_battery_notify,
},
.drv.pm = &acpi_battery_pm,
};
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 2fc2b43a4ed3..0168b3a556b6 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -554,6 +554,30 @@ static void acpi_device_remove_notify_handler(struct acpi_device *device,
acpi_os_wait_events_complete();
}
+int acpi_dev_install_notify_handler(struct acpi_device *adev,
+ u32 handler_type,
+ acpi_notify_handler handler)
+{
+ acpi_status status;
+
+ status = acpi_install_notify_handler(adev->handle, handler_type,
+ handler, adev);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_dev_install_notify_handler);
+
+void acpi_dev_remove_notify_handler(struct acpi_device *adev,
+ u32 handler_type,
+ acpi_notify_handler handler)
+{
+ acpi_remove_notify_handler(adev->handle, handler_type, handler);
+ acpi_os_wait_events_complete();
+}
+EXPORT_SYMBOL_GPL(acpi_dev_remove_notify_handler);
+
/* Handle events targeting \_SB device (at present only graceful shutdown) */
#define ACPI_SB_NOTIFY_SHUTDOWN_REQUEST 0x81
@@ -1005,8 +1029,10 @@ static int acpi_device_probe(struct device *dev)
return -ENOSYS;
ret = acpi_drv->ops.add(acpi_dev);
- if (ret)
+ if (ret) {
+ acpi_dev->driver_data = NULL;
return ret;
+ }
pr_debug("Driver [%s] successfully bound to device [%s]\n",
acpi_drv->name, acpi_dev->pnp.bus_id);
diff --git a/drivers/acpi/hed.c b/drivers/acpi/hed.c
index 78d44e3fe129..46c6f8c35b43 100644
--- a/drivers/acpi/hed.c
+++ b/drivers/acpi/hed.c
@@ -42,22 +42,32 @@ EXPORT_SYMBOL_GPL(unregister_acpi_hed_notifier);
* it is used by HEST Generic Hardware Error Source with notify type
* SCI.
*/
-static void acpi_hed_notify(struct acpi_device *device, u32 event)
+static void acpi_hed_notify(acpi_handle handle, u32 event, void *data)
{
blocking_notifier_call_chain(&acpi_hed_notify_list, 0, NULL);
}
static int acpi_hed_add(struct acpi_device *device)
{
+ int err;
+
/* Only one hardware error device */
if (hed_handle)
return -EINVAL;
hed_handle = device->handle;
- return 0;
+
+ err = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_hed_notify);
+ if (err)
+ hed_handle = NULL;
+
+ return err;
}
static void acpi_hed_remove(struct acpi_device *device)
{
+ acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_hed_notify);
hed_handle = NULL;
}
@@ -68,7 +78,6 @@ static struct acpi_driver acpi_hed_driver = {
.ops = {
.add = acpi_hed_add,
.remove = acpi_hed_remove,
- .notify = acpi_hed_notify,
},
};
module_acpi_driver(acpi_hed_driver);
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 07204d482968..f0e6738ae3c9 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -3282,6 +3282,23 @@ static void acpi_nfit_put_table(void *table)
acpi_put_table(table);
}
+static void acpi_nfit_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct acpi_device *adev = data;
+
+ device_lock(&adev->dev);
+ __acpi_nfit_notify(&adev->dev, handle, event);
+ device_unlock(&adev->dev);
+}
+
+static void acpi_nfit_remove_notify_handler(void *data)
+{
+ struct acpi_device *adev = data;
+
+ acpi_dev_remove_notify_handler(adev, ACPI_DEVICE_NOTIFY,
+ acpi_nfit_notify);
+}
+
void acpi_nfit_shutdown(void *data)
{
struct acpi_nfit_desc *acpi_desc = data;
@@ -3368,12 +3385,18 @@ static int acpi_nfit_add(struct acpi_device *adev)
if (rc)
return rc;
- return devm_add_action_or_reset(dev, acpi_nfit_shutdown, acpi_desc);
-}
-static void acpi_nfit_remove(struct acpi_device *adev)
-{
- /* see acpi_nfit_unregister */
+ rc = devm_add_action_or_reset(dev, acpi_nfit_shutdown, acpi_desc);
+ if (rc)
+ return rc;
+
+ rc = acpi_dev_install_notify_handler(adev, ACPI_DEVICE_NOTIFY,
+ acpi_nfit_notify);
+ if (rc)
+ return rc;
+
+ return devm_add_action_or_reset(dev, acpi_nfit_remove_notify_handler,
+ adev);
}
static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle)
@@ -3446,13 +3469,6 @@ void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event)
}
EXPORT_SYMBOL_GPL(__acpi_nfit_notify);
-static void acpi_nfit_notify(struct acpi_device *adev, u32 event)
-{
- device_lock(&adev->dev);
- __acpi_nfit_notify(&adev->dev, adev->handle, event);
- device_unlock(&adev->dev);
-}
-
static const struct acpi_device_id acpi_nfit_ids[] = {
{ "ACPI0012", 0 },
{ "", 0 },
@@ -3464,8 +3480,6 @@ static struct acpi_driver acpi_nfit_driver = {
.ids = acpi_nfit_ids,
.ops = {
.add = acpi_nfit_add,
- .remove = acpi_nfit_remove,
- .notify = acpi_nfit_notify,
},
};
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index f9f6ebb08fdb..419590f41ed5 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -82,10 +82,6 @@ static int tzp;
module_param(tzp, int, 0444);
MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.");
-static int nocrt;
-module_param(nocrt, int, 0);
-MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points.");
-
static int off;
module_param(off, int, 0);
MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.");
@@ -96,35 +92,27 @@ MODULE_PARM_DESC(psv, "Disable or override all passive trip points.");
static struct workqueue_struct *acpi_thermal_pm_queue;
-struct acpi_thermal_critical {
- unsigned long temperature;
- bool valid;
-};
-
-struct acpi_thermal_hot {
+struct acpi_thermal_trip {
unsigned long temperature;
bool valid;
};
struct acpi_thermal_passive {
+ struct acpi_thermal_trip trip;
struct acpi_handle_list devices;
- unsigned long temperature;
unsigned long tc1;
unsigned long tc2;
unsigned long tsp;
- bool valid;
};
struct acpi_thermal_active {
+ struct acpi_thermal_trip trip;
struct acpi_handle_list devices;
- unsigned long temperature;
- bool valid;
- bool enabled;
};
struct acpi_thermal_trips {
- struct acpi_thermal_critical critical;
- struct acpi_thermal_hot hot;
+ struct acpi_thermal_trip critical;
+ struct acpi_thermal_trip hot;
struct acpi_thermal_passive passive;
struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE];
};
@@ -137,6 +125,7 @@ struct acpi_thermal {
unsigned long polling_frequency;
volatile u8 zombie;
struct acpi_thermal_trips trips;
+ struct thermal_trip *trip_table;
struct acpi_handle_list devices;
struct thermal_zone_device *thermal_zone;
int kelvin_offset; /* in millidegrees */
@@ -190,7 +179,16 @@ static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
return 0;
}
-static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
+static int acpi_thermal_temp(struct acpi_thermal *tz, int temp_deci_k)
+{
+ if (temp_deci_k == THERMAL_TEMP_INVALID)
+ return THERMAL_TEMP_INVALID;
+
+ return deci_kelvin_to_millicelsius_with_offset(temp_deci_k,
+ tz->kelvin_offset);
+}
+
+static void __acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
{
acpi_status status;
unsigned long long tmp;
@@ -255,9 +253,9 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
}
/* Passive (optional) */
- if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.valid) ||
+ if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.trip.valid) ||
flag == ACPI_TRIPS_INIT) {
- valid = tz->trips.passive.valid;
+ valid = tz->trips.passive.trip.valid;
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
@@ -269,44 +267,44 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
}
if (ACPI_FAILURE(status)) {
- tz->trips.passive.valid = false;
+ tz->trips.passive.trip.valid = false;
} else {
- tz->trips.passive.temperature = tmp;
- tz->trips.passive.valid = true;
+ tz->trips.passive.trip.temperature = tmp;
+ tz->trips.passive.trip.valid = true;
if (flag == ACPI_TRIPS_INIT) {
status = acpi_evaluate_integer(tz->device->handle,
"_TC1", NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->trips.passive.valid = false;
+ tz->trips.passive.trip.valid = false;
else
tz->trips.passive.tc1 = tmp;
status = acpi_evaluate_integer(tz->device->handle,
"_TC2", NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->trips.passive.valid = false;
+ tz->trips.passive.trip.valid = false;
else
tz->trips.passive.tc2 = tmp;
status = acpi_evaluate_integer(tz->device->handle,
"_TSP", NULL, &tmp);
if (ACPI_FAILURE(status))
- tz->trips.passive.valid = false;
+ tz->trips.passive.trip.valid = false;
else
tz->trips.passive.tsp = tmp;
}
}
}
- if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.valid) {
+ if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.trip.valid) {
memset(&devices, 0, sizeof(struct acpi_handle_list));
status = acpi_evaluate_reference(tz->device->handle, "_PSL",
NULL, &devices);
if (ACPI_FAILURE(status)) {
acpi_handle_info(tz->device->handle,
"Invalid passive threshold\n");
- tz->trips.passive.valid = false;
+ tz->trips.passive.trip.valid = false;
} else {
- tz->trips.passive.valid = true;
+ tz->trips.passive.trip.valid = true;
}
if (memcmp(&tz->trips.passive.devices, &devices,
@@ -317,24 +315,24 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
}
}
if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) {
- if (valid != tz->trips.passive.valid)
+ if (valid != tz->trips.passive.trip.valid)
ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state");
}
/* Active (optional) */
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
- valid = tz->trips.active[i].valid;
+ valid = tz->trips.active[i].trip.valid;
if (act == -1)
break; /* disable all active trip points */
if (flag == ACPI_TRIPS_INIT || ((flag & ACPI_TRIPS_ACTIVE) &&
- tz->trips.active[i].valid)) {
+ tz->trips.active[i].trip.valid)) {
status = acpi_evaluate_integer(tz->device->handle,
name, NULL, &tmp);
if (ACPI_FAILURE(status)) {
- tz->trips.active[i].valid = false;
+ tz->trips.active[i].trip.valid = false;
if (i == 0)
break;
@@ -342,35 +340,36 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
break;
if (i == 1)
- tz->trips.active[0].temperature = celsius_to_deci_kelvin(act);
+ tz->trips.active[0].trip.temperature =
+ celsius_to_deci_kelvin(act);
else
/*
* Don't allow override higher than
* the next higher trip point
*/
- tz->trips.active[i-1].temperature =
+ tz->trips.active[i-1].trip.temperature =
min_t(unsigned long,
- tz->trips.active[i-2].temperature,
+ tz->trips.active[i-2].trip.temperature,
celsius_to_deci_kelvin(act));
break;
} else {
- tz->trips.active[i].temperature = tmp;
- tz->trips.active[i].valid = true;
+ tz->trips.active[i].trip.temperature = tmp;
+ tz->trips.active[i].trip.valid = true;
}
}
name[2] = 'L';
- if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].valid) {
+ if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].trip.valid) {
memset(&devices, 0, sizeof(struct acpi_handle_list));
status = acpi_evaluate_reference(tz->device->handle,
name, NULL, &devices);
if (ACPI_FAILURE(status)) {
acpi_handle_info(tz->device->handle,
"Invalid active%d threshold\n", i);
- tz->trips.active[i].valid = false;
+ tz->trips.active[i].trip.valid = false;
} else {
- tz->trips.active[i].valid = true;
+ tz->trips.active[i].trip.valid = true;
}
if (memcmp(&tz->trips.active[i].devices, &devices,
@@ -381,10 +380,10 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
}
}
if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES))
- if (valid != tz->trips.active[i].valid)
+ if (valid != tz->trips.active[i].trip.valid)
ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state");
- if (!tz->trips.active[i].valid)
+ if (!tz->trips.active[i].trip.valid)
break;
}
@@ -398,24 +397,73 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device");
}
}
+}
+
+static int acpi_thermal_adjust_trip(struct thermal_trip *trip, void *data)
+{
+ struct acpi_thermal_trip *acpi_trip = trip->priv;
+ struct acpi_thermal *tz = data;
+
+ if (!acpi_trip)
+ return 0;
+
+ if (acpi_trip->valid)
+ trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature);
+ else
+ trip->temperature = THERMAL_TEMP_INVALID;
return 0;
}
+static void acpi_thermal_adjust_thermal_zone(struct thermal_zone_device *thermal,
+ unsigned long data)
+{
+ struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
+ int flag = data == ACPI_THERMAL_NOTIFY_THRESHOLDS ?
+ ACPI_TRIPS_THRESHOLDS : ACPI_TRIPS_DEVICES;
+
+ __acpi_thermal_trips_update(tz, flag);
+
+ for_each_thermal_trip(tz->thermal_zone, acpi_thermal_adjust_trip, tz);
+}
+
+static void acpi_queue_thermal_check(struct acpi_thermal *tz)
+{
+ if (!work_pending(&tz->thermal_check_work))
+ queue_work(acpi_thermal_pm_queue, &tz->thermal_check_work);
+}
+
+static void acpi_thermal_trips_update(struct acpi_thermal *tz, u32 event)
+{
+ struct acpi_device *adev = tz->device;
+
+ /*
+ * Use thermal_zone_device_exec() to carry out the trip points
+ * update, so as to protect thermal_get_trend() from getting stale
+ * trip point temperatures and to prevent thermal_zone_device_update()
+ * invoked from acpi_thermal_check_fn() from producing inconsistent
+ * results.
+ */
+ thermal_zone_device_exec(tz->thermal_zone,
+ acpi_thermal_adjust_thermal_zone, event);
+ acpi_queue_thermal_check(tz);
+ acpi_bus_generate_netlink_event(adev->pnp.device_class,
+ dev_name(&adev->dev), event, 0);
+}
+
static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
{
- int i, ret = acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT);
bool valid;
+ int i;
- if (ret)
- return ret;
+ __acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT);
valid = tz->trips.critical.valid |
tz->trips.hot.valid |
- tz->trips.passive.valid;
+ tz->trips.passive.trip.valid;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++)
- valid = valid || tz->trips.active[i].valid;
+ valid = valid || tz->trips.active[i].trip.valid;
if (!valid) {
pr_warn(FW_BUG "No valid trip found\n");
@@ -443,159 +491,55 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
return 0;
}
-static int thermal_get_trip_type(struct thermal_zone_device *thermal,
- int trip, enum thermal_trip_type *type)
+static int thermal_get_trend(struct thermal_zone_device *thermal,
+ int trip_index, enum thermal_trend *trend)
{
struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
- int i;
+ struct acpi_thermal_trip *acpi_trip;
+ int t, i;
- if (!tz || trip < 0)
+ if (!tz || trip_index < 0)
return -EINVAL;
- if (tz->trips.critical.valid) {
- if (!trip) {
- *type = THERMAL_TRIP_CRITICAL;
- return 0;
- }
- trip--;
- }
-
- if (tz->trips.hot.valid) {
- if (!trip) {
- *type = THERMAL_TRIP_HOT;
- return 0;
- }
- trip--;
- }
-
- if (tz->trips.passive.valid) {
- if (!trip) {
- *type = THERMAL_TRIP_PASSIVE;
- return 0;
- }
- trip--;
- }
-
- for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].valid; i++) {
- if (!trip) {
- *type = THERMAL_TRIP_ACTIVE;
- return 0;
- }
- trip--;
- }
-
- return -EINVAL;
-}
+ if (tz->trips.critical.valid)
+ trip_index--;
-static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
- int trip, int *temp)
-{
- struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
- int i;
+ if (tz->trips.hot.valid)
+ trip_index--;
- if (!tz || trip < 0)
+ if (trip_index < 0)
return -EINVAL;
- if (tz->trips.critical.valid) {
- if (!trip) {
- *temp = deci_kelvin_to_millicelsius_with_offset(
- tz->trips.critical.temperature,
- tz->kelvin_offset);
- return 0;
- }
- trip--;
- }
-
- if (tz->trips.hot.valid) {
- if (!trip) {
- *temp = deci_kelvin_to_millicelsius_with_offset(
- tz->trips.hot.temperature,
- tz->kelvin_offset);
- return 0;
- }
- trip--;
- }
-
- if (tz->trips.passive.valid) {
- if (!trip) {
- *temp = deci_kelvin_to_millicelsius_with_offset(
- tz->trips.passive.temperature,
- tz->kelvin_offset);
- return 0;
- }
- trip--;
- }
-
- for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
- tz->trips.active[i].valid; i++) {
- if (!trip) {
- *temp = deci_kelvin_to_millicelsius_with_offset(
- tz->trips.active[i].temperature,
- tz->kelvin_offset);
- return 0;
- }
- trip--;
- }
-
- return -EINVAL;
-}
-
-static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
- int *temperature)
-{
- struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
+ acpi_trip = &tz->trips.passive.trip;
+ if (acpi_trip->valid && !trip_index--) {
+ t = tz->trips.passive.tc1 * (tz->temperature -
+ tz->last_temperature) +
+ tz->trips.passive.tc2 * (tz->temperature -
+ acpi_trip->temperature);
+ if (t > 0)
+ *trend = THERMAL_TREND_RAISING;
+ else if (t < 0)
+ *trend = THERMAL_TREND_DROPPING;
+ else
+ *trend = THERMAL_TREND_STABLE;
- if (tz->trips.critical.valid) {
- *temperature = deci_kelvin_to_millicelsius_with_offset(
- tz->trips.critical.temperature,
- tz->kelvin_offset);
return 0;
}
- return -EINVAL;
-}
-
-static int thermal_get_trend(struct thermal_zone_device *thermal,
- int trip, enum thermal_trend *trend)
-{
- struct acpi_thermal *tz = thermal_zone_device_priv(thermal);
- enum thermal_trip_type type;
- int i;
-
- if (thermal_get_trip_type(thermal, trip, &type))
- return -EINVAL;
-
- if (type == THERMAL_TRIP_ACTIVE) {
- int trip_temp;
- int temp = deci_kelvin_to_millicelsius_with_offset(
- tz->temperature, tz->kelvin_offset);
- if (thermal_get_trip_temp(thermal, trip, &trip_temp))
- return -EINVAL;
+ t = acpi_thermal_temp(tz, tz->temperature);
- if (temp > trip_temp) {
- *trend = THERMAL_TREND_RAISING;
- return 0;
- } else {
- /* Fall back on default trend */
- return -EINVAL;
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+ acpi_trip = &tz->trips.active[i].trip;
+ if (acpi_trip->valid && !trip_index--) {
+ if (t > acpi_thermal_temp(tz, acpi_trip->temperature)) {
+ *trend = THERMAL_TREND_RAISING;
+ return 0;
+ }
+ break;
}
}
- /*
- * tz->temperature has already been updated by generic thermal layer,
- * before this callback being invoked
- */
- i = tz->trips.passive.tc1 * (tz->temperature - tz->last_temperature) +
- tz->trips.passive.tc2 * (tz->temperature - tz->trips.passive.temperature);
-
- if (i > 0)
- *trend = THERMAL_TREND_RAISING;
- else if (i < 0)
- *trend = THERMAL_TREND_DROPPING;
- else
- *trend = THERMAL_TREND_STABLE;
-
- return 0;
+ return -EINVAL;
}
static void acpi_thermal_zone_device_hot(struct thermal_zone_device *thermal)
@@ -637,7 +581,7 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
if (tz->trips.hot.valid)
trip++;
- if (tz->trips.passive.valid) {
+ if (tz->trips.passive.trip.valid) {
trip++;
for (i = 0; i < tz->trips.passive.devices.count; i++) {
handle = tz->trips.passive.devices.handles[i];
@@ -662,7 +606,7 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
}
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
- if (!tz->trips.active[i].valid)
+ if (!tz->trips.active[i].trip.valid)
break;
trip++;
@@ -709,9 +653,6 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
.bind = acpi_thermal_bind_cooling_device,
.unbind = acpi_thermal_unbind_cooling_device,
.get_temp = thermal_get_temp,
- .get_trip_type = thermal_get_trip_type,
- .get_trip_temp = thermal_get_trip_temp,
- .get_crit_temp = thermal_get_crit_temp,
.get_trend = thermal_get_trend,
.hot = acpi_thermal_zone_device_hot,
.critical = acpi_thermal_zone_device_critical,
@@ -745,63 +686,97 @@ static void acpi_thermal_zone_sysfs_remove(struct acpi_thermal *tz)
static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
{
- int trips = 0;
+ struct acpi_thermal_trip *acpi_trip;
+ struct thermal_trip *trip;
+ int passive_delay = 0;
+ int trip_count = 0;
int result;
- acpi_status status;
int i;
if (tz->trips.critical.valid)
- trips++;
+ trip_count++;
if (tz->trips.hot.valid)
- trips++;
+ trip_count++;
+
+ if (tz->trips.passive.trip.valid) {
+ trip_count++;
+ passive_delay = tz->trips.passive.tsp * 100;
+ }
- if (tz->trips.passive.valid)
- trips++;
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].trip.valid; i++)
+ trip_count++;
- for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].valid;
- i++, trips++);
+ trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL);
+ if (!trip)
+ return -ENOMEM;
- if (tz->trips.passive.valid)
- tz->thermal_zone = thermal_zone_device_register("acpitz", trips, 0, tz,
- &acpi_thermal_zone_ops, NULL,
- tz->trips.passive.tsp * 100,
- tz->polling_frequency * 100);
- else
- tz->thermal_zone =
- thermal_zone_device_register("acpitz", trips, 0, tz,
- &acpi_thermal_zone_ops, NULL,
- 0, tz->polling_frequency * 100);
+ tz->trip_table = trip;
- if (IS_ERR(tz->thermal_zone))
- return -ENODEV;
+ if (tz->trips.critical.valid) {
+ trip->type = THERMAL_TRIP_CRITICAL;
+ trip->temperature = acpi_thermal_temp(tz, tz->trips.critical.temperature);
+ trip++;
+ }
+
+ if (tz->trips.hot.valid) {
+ trip->type = THERMAL_TRIP_HOT;
+ trip->temperature = acpi_thermal_temp(tz, tz->trips.hot.temperature);
+ trip++;
+ }
+
+ acpi_trip = &tz->trips.passive.trip;
+ if (acpi_trip->valid) {
+ trip->type = THERMAL_TRIP_PASSIVE;
+ trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature);
+ trip->priv = acpi_trip;
+ trip++;
+ }
+
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+ acpi_trip = &tz->trips.active[i].trip;
+
+ if (!acpi_trip->valid)
+ break;
+
+ trip->type = THERMAL_TRIP_ACTIVE;
+ trip->temperature = acpi_thermal_temp(tz, acpi_trip->temperature);
+ trip->priv = acpi_trip;
+ trip++;
+ }
+
+ tz->thermal_zone = thermal_zone_device_register_with_trips("acpitz",
+ tz->trip_table,
+ trip_count,
+ 0, tz,
+ &acpi_thermal_zone_ops,
+ NULL,
+ passive_delay,
+ tz->polling_frequency * 100);
+ if (IS_ERR(tz->thermal_zone)) {
+ result = PTR_ERR(tz->thermal_zone);
+ goto free_trip_table;
+ }
result = acpi_thermal_zone_sysfs_add(tz);
if (result)
goto unregister_tzd;
- status = acpi_bus_attach_private_data(tz->device->handle,
- tz->thermal_zone);
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto remove_links;
- }
-
result = thermal_zone_device_enable(tz->thermal_zone);
if (result)
- goto acpi_bus_detach;
+ goto remove_links;
dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
thermal_zone_device_id(tz->thermal_zone));
return 0;
-acpi_bus_detach:
- acpi_bus_detach_private_data(tz->device->handle);
remove_links:
acpi_thermal_zone_sysfs_remove(tz);
unregister_tzd:
thermal_zone_device_unregister(tz->thermal_zone);
+free_trip_table:
+ kfree(tz->trip_table);
return result;
}
@@ -810,8 +785,8 @@ static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
{
acpi_thermal_zone_sysfs_remove(tz);
thermal_zone_device_unregister(tz->thermal_zone);
+ kfree(tz->trip_table);
tz->thermal_zone = NULL;
- acpi_bus_detach_private_data(tz->device->handle);
}
@@ -819,14 +794,9 @@ static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz)
Driver Interface
-------------------------------------------------------------------------- */
-static void acpi_queue_thermal_check(struct acpi_thermal *tz)
-{
- if (!work_pending(&tz->thermal_check_work))
- queue_work(acpi_thermal_pm_queue, &tz->thermal_check_work);
-}
-
-static void acpi_thermal_notify(struct acpi_device *device, u32 event)
+static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
{
+ struct acpi_device *device = data;
struct acpi_thermal *tz = acpi_driver_data(device);
if (!tz)
@@ -837,16 +807,8 @@ static void acpi_thermal_notify(struct acpi_device *device, u32 event)
acpi_queue_thermal_check(tz);
break;
case ACPI_THERMAL_NOTIFY_THRESHOLDS:
- acpi_thermal_trips_update(tz, ACPI_TRIPS_THRESHOLDS);
- acpi_queue_thermal_check(tz);
- acpi_bus_generate_netlink_event(device->pnp.device_class,
- dev_name(&device->dev), event, 0);
- break;
case ACPI_THERMAL_NOTIFY_DEVICES:
- acpi_thermal_trips_update(tz, ACPI_TRIPS_DEVICES);
- acpi_queue_thermal_check(tz);
- acpi_bus_generate_netlink_event(device->pnp.device_class,
- dev_name(&device->dev), event, 0);
+ acpi_thermal_trips_update(tz, event);
break;
default:
acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n",
@@ -997,11 +959,20 @@ static int acpi_thermal_add(struct acpi_device *device)
pr_info("%s [%s] (%ld C)\n", acpi_device_name(device),
acpi_device_bid(device), deci_kelvin_to_celsius(tz->temperature));
- goto end;
+ result = acpi_dev_install_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_thermal_notify);
+ if (result)
+ goto flush_wq;
+
+ return 0;
+
+flush_wq:
+ flush_workqueue(acpi_thermal_pm_queue);
+ acpi_thermal_unregister_thermal_zone(tz);
free_memory:
kfree(tz);
-end:
+
return result;
}
@@ -1012,10 +983,14 @@ static void acpi_thermal_remove(struct acpi_device *device)
if (!device || !acpi_driver_data(device))
return;
- flush_workqueue(acpi_thermal_pm_queue);
tz = acpi_driver_data(device);
+ acpi_dev_remove_notify_handler(device, ACPI_DEVICE_NOTIFY,
+ acpi_thermal_notify);
+
+ flush_workqueue(acpi_thermal_pm_queue);
acpi_thermal_unregister_thermal_zone(tz);
+
kfree(tz);
}
@@ -1030,7 +1005,7 @@ static int acpi_thermal_suspend(struct device *dev)
static int acpi_thermal_resume(struct device *dev)
{
struct acpi_thermal *tz;
- int i, j, power_state, result;
+ int i, j, power_state;
if (!dev)
return -EINVAL;
@@ -1040,18 +1015,12 @@ static int acpi_thermal_resume(struct device *dev)
return -EINVAL;
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
- if (!tz->trips.active[i].valid)
+ if (!tz->trips.active[i].trip.valid)
break;
- tz->trips.active[i].enabled = true;
for (j = 0; j < tz->trips.active[i].devices.count; j++) {
- result = acpi_bus_update_power(
- tz->trips.active[i].devices.handles[j],
- &power_state);
- if (result || (power_state != ACPI_STATE_D0)) {
- tz->trips.active[i].enabled = false;
- break;
- }
+ acpi_bus_update_power(tz->trips.active[i].devices.handles[j],
+ &power_state);
}
}
@@ -1078,7 +1047,6 @@ static struct acpi_driver acpi_thermal_driver = {
.ops = {
.add = acpi_thermal_add,
.remove = acpi_thermal_remove,
- .notify = acpi_thermal_notify,
},
.drv.pm = &acpi_thermal_pm,
};
@@ -1094,7 +1062,7 @@ static int thermal_act(const struct dmi_system_id *d) {
static int thermal_nocrt(const struct dmi_system_id *d) {
pr_notice("%s detected: disabling all critical thermal trip point actions.\n",
d->ident);
- nocrt = 1;
+ crt = -1;
return 0;
}
static int thermal_tzp(const struct dmi_system_id *d) {
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index cc2b5e81c620..a59700593d32 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -348,7 +348,8 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip_id)
struct thermal_trip trip;
/* Ignore disabled trip points */
- if (test_bit(trip_id, &tz->trips_disabled))
+ if (test_bit(trip_id, &tz->trips_disabled) ||
+ trip.temperature == THERMAL_TEMP_INVALID)
return;
__thermal_zone_get_trip(tz, trip_id, &trip);
@@ -496,6 +497,25 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
}
EXPORT_SYMBOL_GPL(thermal_zone_device_update);
+/**
+ * thermal_zone_device_exec - Run a callback under the zone lock.
+ * @tz: Thermal zone.
+ * @cb: Callback to run.
+ * @data: Data to pass to the callback.
+ */
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+ void (*cb)(struct thermal_zone_device *,
+ unsigned long),
+ unsigned long data)
+{
+ mutex_lock(&tz->lock);
+
+ cb(tz, data);
+
+ mutex_unlock(&tz->lock);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_exec);
+
static void thermal_zone_device_check(struct work_struct *work)
{
struct thermal_zone_device *tz = container_of(work, struct
diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h
index 17c1bbed734d..04513f9fbfa1 100644
--- a/drivers/thermal/thermal_core.h
+++ b/drivers/thermal/thermal_core.h
@@ -54,10 +54,6 @@ int for_each_thermal_cooling_device(int (*cb)(struct thermal_cooling_device *,
int for_each_thermal_governor(int (*cb)(struct thermal_governor *, void *),
void *thermal_governor);
-int __for_each_thermal_trip(struct thermal_zone_device *,
- int (*cb)(struct thermal_trip *, void *),
- void *);
-
struct thermal_zone_device *thermal_zone_get_by_id(int id);
struct thermal_attr {
diff --git a/drivers/thermal/thermal_trip.c b/drivers/thermal/thermal_trip.c
index 907f3a4d7bc8..53115cfdfd42 100644
--- a/drivers/thermal/thermal_trip.c
+++ b/drivers/thermal/thermal_trip.c
@@ -9,28 +9,26 @@
*/
#include "thermal_core.h"
-int __for_each_thermal_trip(struct thermal_zone_device *tz,
- int (*cb)(struct thermal_trip *, void *),
- void *data)
+int for_each_thermal_trip(struct thermal_zone_device *tz,
+ int (*cb)(struct thermal_trip *, void *),
+ void *data)
{
int i, ret;
- struct thermal_trip trip;
lockdep_assert_held(&tz->lock);
- for (i = 0; i < tz->num_trips; i++) {
-
- ret = __thermal_zone_get_trip(tz, i, &trip);
- if (ret)
- return ret;
+ if (!tz->trips)
+ return -ENODATA;
- ret = cb(&trip, data);
+ for (i = 0; i < tz->num_trips; i++) {
+ ret = cb(&tz->trips[i], data);
if (ret)
return ret;
}
return 0;
}
+EXPORT_SYMBOL_GPL(for_each_thermal_trip);
int thermal_zone_get_num_trips(struct thermal_zone_device *tz)
{
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index c941d99162c0..23fbe4a16972 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -515,6 +515,12 @@ void acpi_bus_private_data_handler(acpi_handle, void *);
int acpi_bus_get_private_data(acpi_handle, void **);
int acpi_bus_attach_private_data(acpi_handle, void *);
void acpi_bus_detach_private_data(acpi_handle);
+int acpi_dev_install_notify_handler(struct acpi_device *adev,
+ u32 handler_type,
+ acpi_notify_handler handler);
+void acpi_dev_remove_notify_handler(struct acpi_device *adev,
+ u32 handler_type,
+ acpi_notify_handler handler);
extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
extern int register_acpi_notifier(struct notifier_block *);
extern int unregister_acpi_notifier(struct notifier_block *);
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index dee66ade89a0..b449a46766f5 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -81,11 +81,13 @@ struct thermal_zone_device_ops {
* @temperature: temperature value in miliCelsius
* @hysteresis: relative hysteresis in miliCelsius
* @type: trip point type
+ * @priv: pointer to driver data associated with this trip
*/
struct thermal_trip {
int temperature;
int hysteresis;
enum thermal_trip_type type;
+ void *priv;
};
struct thermal_cooling_device_ops {
@@ -287,6 +289,9 @@ int thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id,
int thermal_zone_set_trip(struct thermal_zone_device *tz, int trip_id,
const struct thermal_trip *trip);
+int for_each_thermal_trip(struct thermal_zone_device *tz,
+ int (*cb)(struct thermal_trip *, void *),
+ void *data);
int thermal_zone_get_num_trips(struct thermal_zone_device *tz);
int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp);
@@ -323,6 +328,10 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *,
enum thermal_notify_event);
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+ void (*cb)(struct thermal_zone_device *,
+ unsigned long),
+ unsigned long data);
struct thermal_cooling_device *thermal_cooling_device_register(const char *,
void *, const struct thermal_cooling_device_ops *);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-27 01:14:32 +0300