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-rw-r--r--drivers/acpi/acpica/hwvalid.c1
-rw-r--r--drivers/acpi/battery.c2
-rw-r--r--drivers/acpi/proc.c13
-rw-r--r--drivers/acpi/scan.c31
-rw-r--r--drivers/acpi/sleep.h3
-rw-r--r--drivers/acpi/thermal.c68
-rw-r--r--drivers/acpi/video.c30
-rw-r--r--drivers/acpi/wakeup.c30
8 files changed, 69 insertions, 109 deletions
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index bd3c937b0ac..7737afb157c 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -90,7 +90,6 @@ static const struct acpi_port_info acpi_protected_ports[] = {
{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
- {"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b0de6312919..3c7d8942f23 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -903,7 +903,7 @@ static struct acpi_driver acpi_battery_driver = {
},
};
-static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
+static void acpi_battery_init_async(void *unused, async_cookie_t cookie)
{
if (acpi_disabled)
return;
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 05dfdc96802..d0d550d22a6 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -343,9 +343,6 @@ acpi_system_write_alarm(struct file *file,
}
#endif /* HAVE_ACPI_LEGACY_ALARM */
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
static int
acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
{
@@ -353,7 +350,7 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "Device\tS-state\t Status Sysfs node\n");
- spin_lock(&acpi_device_lock);
+ mutex_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
@@ -361,7 +358,6 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
if (!dev->wakeup.flags.valid)
continue;
- spin_unlock(&acpi_device_lock);
ldev = acpi_get_physical_device(dev->handle);
seq_printf(seq, "%s\t S%d\t%c%-8s ",
@@ -376,9 +372,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "\n");
put_device(ldev);
- spin_lock(&acpi_device_lock);
}
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
return 0;
}
@@ -409,7 +404,7 @@ acpi_system_write_wakeup_device(struct file *file,
strbuf[len] = '\0';
sscanf(strbuf, "%s", str);
- spin_lock(&acpi_device_lock);
+ mutex_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
@@ -446,7 +441,7 @@ acpi_system_write_wakeup_device(struct file *file,
}
}
}
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
return count;
}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 20c23c04920..8ff510b91d8 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -24,7 +24,7 @@ extern struct acpi_device *acpi_root;
static LIST_HEAD(acpi_device_list);
static LIST_HEAD(acpi_bus_id_list);
-DEFINE_SPINLOCK(acpi_device_lock);
+DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
struct acpi_device_bus_id{
@@ -491,7 +491,6 @@ static int acpi_device_register(struct acpi_device *device,
*/
INIT_LIST_HEAD(&device->children);
INIT_LIST_HEAD(&device->node);
- INIT_LIST_HEAD(&device->g_list);
INIT_LIST_HEAD(&device->wakeup_list);
new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
@@ -500,7 +499,7 @@ static int acpi_device_register(struct acpi_device *device,
return -ENOMEM;
}
- spin_lock(&acpi_device_lock);
+ mutex_lock(&acpi_device_lock);
/*
* Find suitable bus_id and instance number in acpi_bus_id_list
* If failed, create one and link it into acpi_bus_id_list
@@ -521,14 +520,12 @@ static int acpi_device_register(struct acpi_device *device,
}
dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
- if (device->parent) {
+ if (device->parent)
list_add_tail(&device->node, &device->parent->children);
- list_add_tail(&device->g_list, &device->parent->g_list);
- } else
- list_add_tail(&device->g_list, &acpi_device_list);
+
if (device->wakeup.flags.valid)
list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
if (device->parent)
device->dev.parent = &parent->dev;
@@ -549,28 +546,22 @@ static int acpi_device_register(struct acpi_device *device,
device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
end:
- spin_lock(&acpi_device_lock);
- if (device->parent) {
+ mutex_lock(&acpi_device_lock);
+ if (device->parent)
list_del(&device->node);
- list_del(&device->g_list);
- } else
- list_del(&device->g_list);
list_del(&device->wakeup_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
return result;
}
static void acpi_device_unregister(struct acpi_device *device, int type)
{
- spin_lock(&acpi_device_lock);
- if (device->parent) {
+ mutex_lock(&acpi_device_lock);
+ if (device->parent)
list_del(&device->node);
- list_del(&device->g_list);
- } else
- list_del(&device->g_list);
list_del(&device->wakeup_list);
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
acpi_detach_data(device->handle, acpi_bus_data_handler);
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h
index cfaf8f5b0a1..8a8f3b3382a 100644
--- a/drivers/acpi/sleep.h
+++ b/drivers/acpi/sleep.h
@@ -5,3 +5,6 @@ extern int acpi_suspend (u32 state);
extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
extern void acpi_enable_wakeup_device(u8 sleep_state);
extern void acpi_disable_wakeup_device(u8 sleep_state);
+
+extern struct list_head acpi_wakeup_device_list;
+extern struct mutex acpi_device_lock;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index e8c143caf0f..9cd15e8c893 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -98,6 +98,7 @@ MODULE_PARM_DESC(psv, "Disable or override all passive trip points.");
static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
static int acpi_thermal_resume(struct acpi_device *device);
+static void acpi_thermal_notify(struct acpi_device *device, u32 event);
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
@@ -123,6 +124,7 @@ static struct acpi_driver acpi_thermal_driver = {
.add = acpi_thermal_add,
.remove = acpi_thermal_remove,
.resume = acpi_thermal_resume,
+ .notify = acpi_thermal_notify,
},
};
@@ -192,6 +194,7 @@ struct acpi_thermal {
struct acpi_handle_list devices;
struct thermal_zone_device *thermal_zone;
int tz_enabled;
+ int kelvin_offset;
struct mutex lock;
};
@@ -581,7 +584,7 @@ static void acpi_thermal_check(void *data)
}
/* sys I/F for generic thermal sysfs support */
-#define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200)
+#define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100)
static int thermal_get_temp(struct thermal_zone_device *thermal,
unsigned long *temp)
@@ -596,7 +599,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal,
if (result)
return result;
- *temp = KELVIN_TO_MILLICELSIUS(tz->temperature);
+ *temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset);
return 0;
}
@@ -702,7 +705,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.critical.flags.valid) {
if (!trip) {
*temp = KELVIN_TO_MILLICELSIUS(
- tz->trips.critical.temperature);
+ tz->trips.critical.temperature,
+ tz->kelvin_offset);
return 0;
}
trip--;
@@ -711,7 +715,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.hot.flags.valid) {
if (!trip) {
*temp = KELVIN_TO_MILLICELSIUS(
- tz->trips.hot.temperature);
+ tz->trips.hot.temperature,
+ tz->kelvin_offset);
return 0;
}
trip--;
@@ -720,7 +725,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
if (tz->trips.passive.flags.valid) {
if (!trip) {
*temp = KELVIN_TO_MILLICELSIUS(
- tz->trips.passive.temperature);
+ tz->trips.passive.temperature,
+ tz->kelvin_offset);
return 0;
}
trip--;
@@ -730,7 +736,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
tz->trips.active[i].flags.valid; i++) {
if (!trip) {
*temp = KELVIN_TO_MILLICELSIUS(
- tz->trips.active[i].temperature);
+ tz->trips.active[i].temperature,
+ tz->kelvin_offset);
return 0;
}
trip--;
@@ -745,7 +752,8 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
if (tz->trips.critical.flags.valid) {
*temperature = KELVIN_TO_MILLICELSIUS(
- tz->trips.critical.temperature);
+ tz->trips.critical.temperature,
+ tz->kelvin_offset);
return 0;
} else
return -EINVAL;
@@ -1264,17 +1272,14 @@ static int acpi_thermal_remove_fs(struct acpi_device *device)
Driver Interface
-------------------------------------------------------------------------- */
-static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_thermal_notify(struct acpi_device *device, u32 event)
{
- struct acpi_thermal *tz = data;
- struct acpi_device *device = NULL;
+ struct acpi_thermal *tz = acpi_driver_data(device);
if (!tz)
return;
- device = tz->device;
-
switch (event) {
case ACPI_THERMAL_NOTIFY_TEMPERATURE:
acpi_thermal_check(tz);
@@ -1298,8 +1303,6 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
"Unsupported event [0x%x]\n", event));
break;
}
-
- return;
}
static int acpi_thermal_get_info(struct acpi_thermal *tz)
@@ -1334,10 +1337,28 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
return 0;
}
+/*
+ * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI
+ * handles temperature values with a single decimal place. As a consequence,
+ * some implementations use an offset of 273.1 and others use an offset of
+ * 273.2. Try to find out which one is being used, to present the most
+ * accurate and visually appealing number.
+ *
+ * The heuristic below should work for all ACPI thermal zones which have a
+ * critical trip point with a value being a multiple of 0.5 degree Celsius.
+ */
+static void acpi_thermal_guess_offset(struct acpi_thermal *tz)
+{
+ if (tz->trips.critical.flags.valid &&
+ (tz->trips.critical.temperature % 5) == 1)
+ tz->kelvin_offset = 2731;
+ else
+ tz->kelvin_offset = 2732;
+}
+
static int acpi_thermal_add(struct acpi_device *device)
{
int result = 0;
- acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
@@ -1360,6 +1381,8 @@ static int acpi_thermal_add(struct acpi_device *device)
if (result)
goto free_memory;
+ acpi_thermal_guess_offset(tz);
+
result = acpi_thermal_register_thermal_zone(tz);
if (result)
goto free_memory;
@@ -1368,21 +1391,11 @@ static int acpi_thermal_add(struct acpi_device *device)
if (result)
goto unregister_thermal_zone;
- status = acpi_install_notify_handler(device->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_thermal_notify, tz);
- if (ACPI_FAILURE(status)) {
- result = -ENODEV;
- goto remove_fs;
- }
-
printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n",
acpi_device_name(device), acpi_device_bid(device),
KELVIN_TO_CELSIUS(tz->temperature));
goto end;
-remove_fs:
- acpi_thermal_remove_fs(device);
unregister_thermal_zone:
thermal_zone_device_unregister(tz->thermal_zone);
free_memory:
@@ -1393,7 +1406,6 @@ end:
static int acpi_thermal_remove(struct acpi_device *device, int type)
{
- acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
if (!device || !acpi_driver_data(device))
@@ -1401,10 +1413,6 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
tz = acpi_driver_data(device);
- status = acpi_remove_notify_handler(device->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_thermal_notify);
-
acpi_thermal_remove_fs(device);
acpi_thermal_unregister_thermal_zone(tz);
mutex_destroy(&tz->lock);
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index ab06143672b..cd4fb7543a9 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -79,6 +79,7 @@ module_param(brightness_switch_enabled, bool, 0644);
static int acpi_video_bus_add(struct acpi_device *device);
static int acpi_video_bus_remove(struct acpi_device *device, int type);
static int acpi_video_resume(struct acpi_device *device);
+static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
static const struct acpi_device_id video_device_ids[] = {
{ACPI_VIDEO_HID, 0},
@@ -94,6 +95,7 @@ static struct acpi_driver acpi_video_bus = {
.add = acpi_video_bus_add,
.remove = acpi_video_bus_remove,
.resume = acpi_video_resume,
+ .notify = acpi_video_bus_notify,
},
};
@@ -1986,17 +1988,15 @@ static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
return acpi_video_bus_DOS(video, 0, 1);
}
-static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
{
- struct acpi_video_bus *video = data;
- struct acpi_device *device = NULL;
+ struct acpi_video_bus *video = acpi_driver_data(device);
struct input_dev *input;
int keycode;
if (!video)
return;
- device = video->device;
input = video->input;
switch (event) {
@@ -2127,7 +2127,6 @@ static int acpi_video_resume(struct acpi_device *device)
static int acpi_video_bus_add(struct acpi_device *device)
{
- acpi_status status;
struct acpi_video_bus *video;
struct input_dev *input;
int error;
@@ -2169,20 +2168,10 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_video_bus_get_devices(video, device);
acpi_video_bus_start_devices(video);
- status = acpi_install_notify_handler(device->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_video_bus_notify, video);
- if (ACPI_FAILURE(status)) {
- printk(KERN_ERR PREFIX
- "Error installing notify handler\n");
- error = -ENODEV;
- goto err_stop_video;
- }
-
video->input = input = input_allocate_device();
if (!input) {
error = -ENOMEM;
- goto err_uninstall_notify;
+ goto err_stop_video;
}
snprintf(video->phys, sizeof(video->phys),
@@ -2218,9 +2207,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
err_free_input_dev:
input_free_device(input);
- err_uninstall_notify:
- acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
- acpi_video_bus_notify);
err_stop_video:
acpi_video_bus_stop_devices(video);
acpi_video_bus_put_devices(video);
@@ -2235,7 +2221,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
static int acpi_video_bus_remove(struct acpi_device *device, int type)
{
- acpi_status status = 0;
struct acpi_video_bus *video = NULL;
@@ -2245,11 +2230,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
video = acpi_driver_data(device);
acpi_video_bus_stop_devices(video);
-
- status = acpi_remove_notify_handler(video->device->handle,
- ACPI_DEVICE_NOTIFY,
- acpi_video_bus_notify);
-
acpi_video_bus_put_devices(video);
acpi_video_bus_remove_fs(device);
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 5aee8c26cc9..88725dcdf8b 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -12,12 +12,14 @@
#include "internal.h"
#include "sleep.h"
+/*
+ * We didn't lock acpi_device_lock in the file, because it invokes oops in
+ * suspend/resume and isn't really required as this is called in S-state. At
+ * that time, there is no device hotplug
+ **/
#define _COMPONENT ACPI_SYSTEM_COMPONENT
ACPI_MODULE_NAME("wakeup_devices")
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
/**
* acpi_enable_wakeup_device_prep - prepare wakeup devices
* @sleep_state: ACPI state
@@ -29,7 +31,6 @@ void acpi_enable_wakeup_device_prep(u8 sleep_state)
{
struct list_head *node, *next;
- spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev = container_of(node,
struct acpi_device,
@@ -40,11 +41,8 @@ void acpi_enable_wakeup_device_prep(u8 sleep_state)
(sleep_state > (u32) dev->wakeup.sleep_state))
continue;
- spin_unlock(&acpi_device_lock);
acpi_enable_wakeup_device_power(dev, sleep_state);
- spin_lock(&acpi_device_lock);
}
- spin_unlock(&acpi_device_lock);
}
/**
@@ -60,7 +58,6 @@ void acpi_enable_wakeup_device(u8 sleep_state)
* Caution: this routine must be invoked when interrupt is disabled
* Refer ACPI2.0: P212
*/
- spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
@@ -74,22 +71,17 @@ void acpi_enable_wakeup_device(u8 sleep_state)
if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
|| sleep_state > (u32) dev->wakeup.sleep_state) {
if (dev->wakeup.flags.run_wake) {
- spin_unlock(&acpi_device_lock);
/* set_gpe_type will disable GPE, leave it like that */
acpi_set_gpe_type(dev->wakeup.gpe_device,
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_RUNTIME);
- spin_lock(&acpi_device_lock);
}
continue;
}
- spin_unlock(&acpi_device_lock);
if (!dev->wakeup.flags.run_wake)
acpi_enable_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number);
- spin_lock(&acpi_device_lock);
}
- spin_unlock(&acpi_device_lock);
}
/**
@@ -101,7 +93,6 @@ void acpi_disable_wakeup_device(u8 sleep_state)
{
struct list_head *node, *next;
- spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev =
container_of(node, struct acpi_device, wakeup_list);
@@ -112,19 +103,16 @@ void acpi_disable_wakeup_device(u8 sleep_state)
if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
|| sleep_state > (u32) dev->wakeup.sleep_state) {
if (dev->wakeup.flags.run_wake) {
- spin_unlock(&acpi_device_lock);
acpi_set_gpe_type(dev->wakeup.gpe_device,
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_WAKE_RUN);
/* Re-enable it, since set_gpe_type will disable it */
acpi_enable_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number);
- spin_lock(&acpi_device_lock);
}
continue;
}
- spin_unlock(&acpi_device_lock);
acpi_disable_wakeup_device_power(dev);
/* Never disable run-wake GPE */
if (!dev->wakeup.flags.run_wake) {
@@ -133,16 +121,14 @@ void acpi_disable_wakeup_device(u8 sleep_state)
acpi_clear_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number, ACPI_NOT_ISR);
}
- spin_lock(&acpi_device_lock);
}
- spin_unlock(&acpi_device_lock);
}
int __init acpi_wakeup_device_init(void)
{
struct list_head *node, *next;
- spin_lock(&acpi_device_lock);
+ mutex_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
struct acpi_device *dev = container_of(node,
struct acpi_device,
@@ -150,15 +136,13 @@ int __init acpi_wakeup_device_init(void)
/* In case user doesn't load button driver */
if (!dev->wakeup.flags.run_wake || dev->wakeup.state.enabled)
continue;
- spin_unlock(&acpi_device_lock);
acpi_set_gpe_type(dev->wakeup.gpe_device,
dev->wakeup.gpe_number,
ACPI_GPE_TYPE_WAKE_RUN);
acpi_enable_gpe(dev->wakeup.gpe_device,
dev->wakeup.gpe_number);
dev->wakeup.state.enabled = 1;
- spin_lock(&acpi_device_lock);
}
- spin_unlock(&acpi_device_lock);
+ mutex_unlock(&acpi_device_lock);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 09:08:33 +0000