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-rw-r--r--drivers/tty/hvc/Kconfig2
-rw-r--r--drivers/tty/hvc/hvc_console.c23
-rw-r--r--drivers/tty/rocket.c25
-rw-r--r--drivers/tty/serial/Kconfig2
-rw-r--r--drivers/tty/serial/owl-uart.c7
-rw-r--r--drivers/tty/serial/sh-sci.c13
-rw-r--r--drivers/tty/serial/sifive.c1
-rw-r--r--drivers/tty/serial/sunhv.c3
-rw-r--r--drivers/tty/serial/xilinx_uartps.c212
-rw-r--r--drivers/tty/sysrq.c2
-rw-r--r--drivers/tty/vt/vt.c14
11 files changed, 113 insertions, 191 deletions
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig
index 31b7e1b03749..d1b27b0522a3 100644
--- a/drivers/tty/hvc/Kconfig
+++ b/drivers/tty/hvc/Kconfig
@@ -88,7 +88,7 @@ config HVC_DCC
config HVC_RISCV_SBI
bool "RISC-V SBI console support"
- depends on RISCV_SBI
+ depends on RISCV_SBI_V01
select HVC_DRIVER
help
This enables support for console output via RISC-V SBI calls, which
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 27284a2dcd2b..436cc51c92c3 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -302,10 +302,6 @@ int hvc_instantiate(uint32_t vtermno, int index, const struct hv_ops *ops)
vtermnos[index] = vtermno;
cons_ops[index] = ops;
- /* reserve all indices up to and including this index */
- if (last_hvc < index)
- last_hvc = index;
-
/* check if we need to re-register the kernel console */
hvc_check_console(index);
@@ -960,13 +956,22 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
cons_ops[i] == hp->ops)
break;
- /* no matching slot, just use a counter */
- if (i >= MAX_NR_HVC_CONSOLES)
- i = ++last_hvc;
+ if (i >= MAX_NR_HVC_CONSOLES) {
+
+ /* find 'empty' slot for console */
+ for (i = 0; i < MAX_NR_HVC_CONSOLES && vtermnos[i] != -1; i++) {
+ }
+
+ /* no matching slot, just use a counter */
+ if (i == MAX_NR_HVC_CONSOLES)
+ i = ++last_hvc + MAX_NR_HVC_CONSOLES;
+ }
hp->index = i;
- cons_ops[i] = ops;
- vtermnos[i] = vtermno;
+ if (i < MAX_NR_HVC_CONSOLES) {
+ cons_ops[i] = ops;
+ vtermnos[i] = vtermno;
+ }
list_add_tail(&(hp->next), &hvc_structs);
mutex_unlock(&hvc_structs_mutex);
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index fbaa4ec85560..e2138e7d5dc6 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -632,18 +632,21 @@ init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
tty_port_init(&info->port);
info->port.ops = &rocket_port_ops;
info->flags &= ~ROCKET_MODE_MASK;
- switch (pc104[board][line]) {
- case 422:
- info->flags |= ROCKET_MODE_RS422;
- break;
- case 485:
- info->flags |= ROCKET_MODE_RS485;
- break;
- case 232:
- default:
+ if (board < ARRAY_SIZE(pc104) && line < ARRAY_SIZE(pc104_1))
+ switch (pc104[board][line]) {
+ case 422:
+ info->flags |= ROCKET_MODE_RS422;
+ break;
+ case 485:
+ info->flags |= ROCKET_MODE_RS485;
+ break;
+ case 232:
+ default:
+ info->flags |= ROCKET_MODE_RS232;
+ break;
+ }
+ else
info->flags |= ROCKET_MODE_RS232;
- break;
- }
info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 0aea76cd67ff..adf9e80e7dc9 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -86,7 +86,7 @@ config SERIAL_EARLYCON_ARM_SEMIHOST
config SERIAL_EARLYCON_RISCV_SBI
bool "Early console using RISC-V SBI"
- depends on RISCV_SBI
+ depends on RISCV_SBI_V01
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
select SERIAL_EARLYCON
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c
index 42c8cc93b603..c149f8c30007 100644
--- a/drivers/tty/serial/owl-uart.c
+++ b/drivers/tty/serial/owl-uart.c
@@ -680,6 +680,12 @@ static int owl_uart_probe(struct platform_device *pdev)
return PTR_ERR(owl_port->clk);
}
+ ret = clk_prepare_enable(owl_port->clk);
+ if (ret) {
+ dev_err(&pdev->dev, "could not enable clk\n");
+ return ret;
+ }
+
owl_port->port.dev = &pdev->dev;
owl_port->port.line = pdev->id;
owl_port->port.type = PORT_OWL;
@@ -712,6 +718,7 @@ static int owl_uart_remove(struct platform_device *pdev)
uart_remove_one_port(&owl_uart_driver, &owl_port->port);
owl_uart_ports[pdev->id] = NULL;
+ clk_disable_unprepare(owl_port->clk);
return 0;
}
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index c073aa7001c4..e1179e74a2b8 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -870,9 +870,16 @@ static void sci_receive_chars(struct uart_port *port)
tty_insert_flip_char(tport, c, TTY_NORMAL);
} else {
for (i = 0; i < count; i++) {
- char c = serial_port_in(port, SCxRDR);
-
- status = serial_port_in(port, SCxSR);
+ char c;
+
+ if (port->type == PORT_SCIF ||
+ port->type == PORT_HSCIF) {
+ status = serial_port_in(port, SCxSR);
+ c = serial_port_in(port, SCxRDR);
+ } else {
+ c = serial_port_in(port, SCxRDR);
+ status = serial_port_in(port, SCxSR);
+ }
if (uart_handle_sysrq_char(port, c)) {
count--; i--;
continue;
diff --git a/drivers/tty/serial/sifive.c b/drivers/tty/serial/sifive.c
index 13eadcb8aec4..0b5110dad051 100644
--- a/drivers/tty/serial/sifive.c
+++ b/drivers/tty/serial/sifive.c
@@ -883,6 +883,7 @@ console_initcall(sifive_console_init);
static void __ssp_add_console_port(struct sifive_serial_port *ssp)
{
+ spin_lock_init(&ssp->port.lock);
sifive_serial_console_ports[ssp->port.line] = ssp;
}
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index eafada8fb6fa..e35073e93a5b 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -567,6 +567,9 @@ static int hv_probe(struct platform_device *op)
sunserial_console_match(&sunhv_console, op->dev.of_node,
&sunhv_reg, port->line, false);
+ /* We need to initialize lock even for non-registered console */
+ spin_lock_init(&port->lock);
+
err = uart_add_one_port(&sunhv_reg, port);
if (err)
goto out_unregister_driver;
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 6b26f767768e..35e9e8faf8de 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -26,13 +26,15 @@
#define CDNS_UART_TTY_NAME "ttyPS"
#define CDNS_UART_NAME "xuartps"
+#define CDNS_UART_MAJOR 0 /* use dynamic node allocation */
+#define CDNS_UART_MINOR 0 /* works best with devtmpfs */
+#define CDNS_UART_NR_PORTS 16
#define CDNS_UART_FIFO_SIZE 64 /* FIFO size */
#define CDNS_UART_REGISTER_SPACE 0x1000
#define TX_TIMEOUT 500000
/* Rx Trigger level */
static int rx_trigger_level = 56;
-static int uartps_major;
module_param(rx_trigger_level, uint, 0444);
MODULE_PARM_DESC(rx_trigger_level, "Rx trigger level, 1-63 bytes");
@@ -188,7 +190,6 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255");
* @pclk: APB clock
* @cdns_uart_driver: Pointer to UART driver
* @baud: Current baud rate
- * @id: Port ID
* @clk_rate_change_nb: Notifier block for clock changes
* @quirks: Flags for RXBS support.
*/
@@ -198,7 +199,6 @@ struct cdns_uart {
struct clk *pclk;
struct uart_driver *cdns_uart_driver;
unsigned int baud;
- int id;
struct notifier_block clk_rate_change_nb;
u32 quirks;
bool cts_override;
@@ -1133,6 +1133,8 @@ static const struct uart_ops cdns_uart_ops = {
#endif
};
+static struct uart_driver cdns_uart_uart_driver;
+
#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
/**
* cdns_uart_console_putchar - write the character to the FIFO buffer
@@ -1272,6 +1274,16 @@ static int cdns_uart_console_setup(struct console *co, char *options)
return uart_set_options(port, co, baud, parity, bits, flow);
}
+
+static struct console cdns_uart_console = {
+ .name = CDNS_UART_TTY_NAME,
+ .write = cdns_uart_console_write,
+ .device = uart_console_device,
+ .setup = cdns_uart_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1, /* Specified on the cmdline (e.g. console=ttyPS ) */
+ .data = &cdns_uart_uart_driver,
+};
#endif /* CONFIG_SERIAL_XILINX_PS_UART_CONSOLE */
#ifdef CONFIG_PM_SLEEP
@@ -1403,89 +1415,8 @@ static const struct of_device_id cdns_uart_of_match[] = {
};
MODULE_DEVICE_TABLE(of, cdns_uart_of_match);
-/*
- * Maximum number of instances without alias IDs but if there is alias
- * which target "< MAX_UART_INSTANCES" range this ID can't be used.
- */
-#define MAX_UART_INSTANCES 32
-
-/* Stores static aliases list */
-static DECLARE_BITMAP(alias_bitmap, MAX_UART_INSTANCES);
-static int alias_bitmap_initialized;
-
-/* Stores actual bitmap of allocated IDs with alias IDs together */
-static DECLARE_BITMAP(bitmap, MAX_UART_INSTANCES);
-/* Protect bitmap operations to have unique IDs */
-static DEFINE_MUTEX(bitmap_lock);
-
-static int cdns_get_id(struct platform_device *pdev)
-{
- int id, ret;
-
- mutex_lock(&bitmap_lock);
-
- /* Alias list is stable that's why get alias bitmap only once */
- if (!alias_bitmap_initialized) {
- ret = of_alias_get_alias_list(cdns_uart_of_match, "serial",
- alias_bitmap, MAX_UART_INSTANCES);
- if (ret && ret != -EOVERFLOW) {
- mutex_unlock(&bitmap_lock);
- return ret;
- }
-
- alias_bitmap_initialized++;
- }
-
- /* Make sure that alias ID is not taken by instance without alias */
- bitmap_or(bitmap, bitmap, alias_bitmap, MAX_UART_INSTANCES);
-
- dev_dbg(&pdev->dev, "Alias bitmap: %*pb\n",
- MAX_UART_INSTANCES, bitmap);
-
- /* Look for a serialN alias */
- id = of_alias_get_id(pdev->dev.of_node, "serial");
- if (id < 0) {
- dev_warn(&pdev->dev,
- "No serial alias passed. Using the first free id\n");
-
- /*
- * Start with id 0 and check if there is no serial0 alias
- * which points to device which is compatible with this driver.
- * If alias exists then try next free position.
- */
- id = 0;
-
- for (;;) {
- dev_info(&pdev->dev, "Checking id %d\n", id);
- id = find_next_zero_bit(bitmap, MAX_UART_INSTANCES, id);
-
- /* No free empty instance */
- if (id == MAX_UART_INSTANCES) {
- dev_err(&pdev->dev, "No free ID\n");
- mutex_unlock(&bitmap_lock);
- return -EINVAL;
- }
-
- dev_dbg(&pdev->dev, "The empty id is %d\n", id);
- /* Check if ID is empty */
- if (!test_and_set_bit(id, bitmap)) {
- /* Break the loop if bit is taken */
- dev_dbg(&pdev->dev,
- "Selected ID %d allocation passed\n",
- id);
- break;
- }
- dev_dbg(&pdev->dev,
- "Selected ID %d allocation failed\n", id);
- /* if taking bit fails then try next one */
- id++;
- }
- }
-
- mutex_unlock(&bitmap_lock);
-
- return id;
-}
+/* Temporary variable for storing number of instances */
+static int instances;
/**
* cdns_uart_probe - Platform driver probe
@@ -1495,16 +1426,11 @@ static int cdns_get_id(struct platform_device *pdev)
*/
static int cdns_uart_probe(struct platform_device *pdev)
{
- int rc, irq;
+ int rc, id, irq;
struct uart_port *port;
struct resource *res;
struct cdns_uart *cdns_uart_data;
const struct of_device_id *match;
- struct uart_driver *cdns_uart_uart_driver;
- char *driver_name;
-#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
- struct console *cdns_uart_console;
-#endif
cdns_uart_data = devm_kzalloc(&pdev->dev, sizeof(*cdns_uart_data),
GFP_KERNEL);
@@ -1514,64 +1440,36 @@ static int cdns_uart_probe(struct platform_device *pdev)
if (!port)
return -ENOMEM;
- cdns_uart_uart_driver = devm_kzalloc(&pdev->dev,
- sizeof(*cdns_uart_uart_driver),
- GFP_KERNEL);
- if (!cdns_uart_uart_driver)
- return -ENOMEM;
-
- cdns_uart_data->id = cdns_get_id(pdev);
- if (cdns_uart_data->id < 0)
- return cdns_uart_data->id;
+ /* Look for a serialN alias */
+ id = of_alias_get_id(pdev->dev.of_node, "serial");
+ if (id < 0)
+ id = 0;
- /* There is a need to use unique driver name */
- driver_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s%d",
- CDNS_UART_NAME, cdns_uart_data->id);
- if (!driver_name) {
- rc = -ENOMEM;
- goto err_out_id;
+ if (id >= CDNS_UART_NR_PORTS) {
+ dev_err(&pdev->dev, "Cannot get uart_port structure\n");
+ return -ENODEV;
}
- cdns_uart_uart_driver->owner = THIS_MODULE;
- cdns_uart_uart_driver->driver_name = driver_name;
- cdns_uart_uart_driver->dev_name = CDNS_UART_TTY_NAME;
- cdns_uart_uart_driver->major = uartps_major;
- cdns_uart_uart_driver->minor = cdns_uart_data->id;
- cdns_uart_uart_driver->nr = 1;
-
+ if (!cdns_uart_uart_driver.state) {
+ cdns_uart_uart_driver.owner = THIS_MODULE;
+ cdns_uart_uart_driver.driver_name = CDNS_UART_NAME;
+ cdns_uart_uart_driver.dev_name = CDNS_UART_TTY_NAME;
+ cdns_uart_uart_driver.major = CDNS_UART_MAJOR;
+ cdns_uart_uart_driver.minor = CDNS_UART_MINOR;
+ cdns_uart_uart_driver.nr = CDNS_UART_NR_PORTS;
#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
- cdns_uart_console = devm_kzalloc(&pdev->dev, sizeof(*cdns_uart_console),
- GFP_KERNEL);
- if (!cdns_uart_console) {
- rc = -ENOMEM;
- goto err_out_id;
- }
-
- strncpy(cdns_uart_console->name, CDNS_UART_TTY_NAME,
- sizeof(cdns_uart_console->name));
- cdns_uart_console->index = cdns_uart_data->id;
- cdns_uart_console->write = cdns_uart_console_write;
- cdns_uart_console->device = uart_console_device;
- cdns_uart_console->setup = cdns_uart_console_setup;
- cdns_uart_console->flags = CON_PRINTBUFFER;
- cdns_uart_console->data = cdns_uart_uart_driver;
- cdns_uart_uart_driver->cons = cdns_uart_console;
+ cdns_uart_uart_driver.cons = &cdns_uart_console;
+ cdns_uart_console.index = id;
#endif
- rc = uart_register_driver(cdns_uart_uart_driver);
- if (rc < 0) {
- dev_err(&pdev->dev, "Failed to register driver\n");
- goto err_out_id;
+ rc = uart_register_driver(&cdns_uart_uart_driver);
+ if (rc < 0) {
+ dev_err(&pdev->dev, "Failed to register driver\n");
+ return rc;
+ }
}
- cdns_uart_data->cdns_uart_driver = cdns_uart_uart_driver;
-
- /*
- * Setting up proper name_base needs to be done after uart
- * registration because tty_driver structure is not filled.
- * name_base is 0 by default.
- */
- cdns_uart_uart_driver->tty_driver->name_base = cdns_uart_data->id;
+ cdns_uart_data->cdns_uart_driver = &cdns_uart_uart_driver;
match = of_match_node(cdns_uart_of_match, pdev->dev.of_node);
if (match && match->data) {
@@ -1649,6 +1547,7 @@ static int cdns_uart_probe(struct platform_device *pdev)
port->ops = &cdns_uart_ops;
port->fifosize = CDNS_UART_FIFO_SIZE;
port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_XILINX_PS_UART_CONSOLE);
+ port->line = id;
/*
* Register the port.
@@ -1680,7 +1579,7 @@ static int cdns_uart_probe(struct platform_device *pdev)
console_port = port;
#endif
- rc = uart_add_one_port(cdns_uart_uart_driver, port);
+ rc = uart_add_one_port(&cdns_uart_uart_driver, port);
if (rc) {
dev_err(&pdev->dev,
"uart_add_one_port() failed; err=%i\n", rc);
@@ -1690,13 +1589,15 @@ static int cdns_uart_probe(struct platform_device *pdev)
#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE
/* This is not port which is used for console that's why clean it up */
if (console_port == port &&
- !(cdns_uart_uart_driver->cons->flags & CON_ENABLED))
+ !(cdns_uart_uart_driver.cons->flags & CON_ENABLED))
console_port = NULL;
#endif
- uartps_major = cdns_uart_uart_driver->tty_driver->major;
cdns_uart_data->cts_override = of_property_read_bool(pdev->dev.of_node,
"cts-override");
+
+ instances++;
+
return 0;
err_out_pm_disable:
@@ -1712,12 +1613,8 @@ err_out_clk_disable:
err_out_clk_dis_pclk:
clk_disable_unprepare(cdns_uart_data->pclk);
err_out_unregister_driver:
- uart_unregister_driver(cdns_uart_data->cdns_uart_driver);
-err_out_id:
- mutex_lock(&bitmap_lock);
- if (cdns_uart_data->id < MAX_UART_INSTANCES)
- clear_bit(cdns_uart_data->id, bitmap);
- mutex_unlock(&bitmap_lock);
+ if (!instances)
+ uart_unregister_driver(cdns_uart_data->cdns_uart_driver);
return rc;
}
@@ -1740,10 +1637,6 @@ static int cdns_uart_remove(struct platform_device *pdev)
#endif
rc = uart_remove_one_port(cdns_uart_data->cdns_uart_driver, port);
port->mapbase = 0;
- mutex_lock(&bitmap_lock);
- if (cdns_uart_data->id < MAX_UART_INSTANCES)
- clear_bit(cdns_uart_data->id, bitmap);
- mutex_unlock(&bitmap_lock);
clk_disable_unprepare(cdns_uart_data->uartclk);
clk_disable_unprepare(cdns_uart_data->pclk);
pm_runtime_disable(&pdev->dev);
@@ -1756,13 +1649,8 @@ static int cdns_uart_remove(struct platform_device *pdev)
console_port = NULL;
#endif
- /* If this is last instance major number should be initialized */
- mutex_lock(&bitmap_lock);
- if (bitmap_empty(bitmap, MAX_UART_INSTANCES))
- uartps_major = 0;
- mutex_unlock(&bitmap_lock);
-
- uart_unregister_driver(cdns_uart_data->cdns_uart_driver);
+ if (!--instances)
+ uart_unregister_driver(cdns_uart_data->cdns_uart_driver);
return rc;
}
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 5e0d0813da55..0dc3878794fd 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -74,6 +74,7 @@ int sysrq_mask(void)
return 1;
return sysrq_enabled;
}
+EXPORT_SYMBOL_GPL(sysrq_mask);
/*
* A value of 1 means 'all', other nonzero values are an op mask:
@@ -1058,6 +1059,7 @@ int sysrq_toggle_support(int enable_mask)
return 0;
}
+EXPORT_SYMBOL_GPL(sysrq_toggle_support);
static int __sysrq_swap_key_ops(int key, struct sysrq_key_op *insert_op_p,
struct sysrq_key_op *remove_op_p)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 309a39197be0..48a8199f7845 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -81,6 +81,7 @@
#include <linux/errno.h>
#include <linux/kd.h>
#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <linux/major.h>
#include <linux/mm.h>
#include <linux/console.h>
@@ -350,7 +351,7 @@ static struct uni_screen *vc_uniscr_alloc(unsigned int cols, unsigned int rows)
/* allocate everything in one go */
memsize = cols * rows * sizeof(char32_t);
memsize += rows * sizeof(char32_t *);
- p = kmalloc(memsize, GFP_KERNEL);
+ p = vmalloc(memsize);
if (!p)
return NULL;
@@ -364,9 +365,14 @@ static struct uni_screen *vc_uniscr_alloc(unsigned int cols, unsigned int rows)
return uniscr;
}
+static void vc_uniscr_free(struct uni_screen *uniscr)
+{
+ vfree(uniscr);
+}
+
static void vc_uniscr_set(struct vc_data *vc, struct uni_screen *new_uniscr)
{
- kfree(vc->vc_uni_screen);
+ vc_uniscr_free(vc->vc_uni_screen);
vc->vc_uni_screen = new_uniscr;
}
@@ -1206,7 +1212,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
return 0;
- if (new_screen_size > (4 << 20))
+ if (new_screen_size > KMALLOC_MAX_SIZE)
return -EINVAL;
newscreen = kzalloc(new_screen_size, GFP_USER);
if (!newscreen)
@@ -1229,7 +1235,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
err = resize_screen(vc, new_cols, new_rows, user);
if (err) {
kfree(newscreen);
- kfree(new_uniscr);
+ vc_uniscr_free(new_uniscr);
return err;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 20:20:32 +0100