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power: reset: restart-poweroff: Use devm_register_sys_off_handler(POWER_OFF)

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Use device life-cycle managed register function to simplify probe and
exit paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240212162831.67838-18-afd@ti.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andrew Davis 2024-02-12 10:28:29 -06:00 committed by Sebastian Reichel
parent b6475c3f81
commit c3ede0b6f7
1 changed files with 8 additions and 17 deletions
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25
drivers/power/reset/restart-poweroff.c
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@ -14,29 +14,21 @@
#include <linux/module.h>
#include <linux/reboot.h>
static void restart_poweroff_do_poweroff(void)
static int restart_poweroff_do_poweroff(struct sys_off_data *data)
{
reboot_mode = REBOOT_HARD;
machine_restart(NULL);
return NOTIFY_DONE;
}
static int restart_poweroff_probe(struct platform_device *pdev)
{
/* If a pm_power_off function has already been added, leave it alone */
if (pm_power_off != NULL) {
dev_err(&pdev->dev,
"pm_power_off function already registered");
return -EBUSY;
}
pm_power_off = &restart_poweroff_do_poweroff;
return 0;
}
static void restart_poweroff_remove(struct platform_device *pdev)
{
if (pm_power_off == &restart_poweroff_do_poweroff)
pm_power_off = NULL;
/* Set this handler to low priority to not override an existing handler */
return devm_register_sys_off_handler(&pdev->dev,
SYS_OFF_MODE_POWER_OFF,
SYS_OFF_PRIO_LOW,
restart_poweroff_do_poweroff,
NULL);
}
static const struct of_device_id of_restart_poweroff_match[] = {
@ -47,7 +39,6 @@ MODULE_DEVICE_TABLE(of, of_restart_poweroff_match);
static struct platform_driver restart_poweroff_driver = {
.probe = restart_poweroff_probe,
.remove_new = restart_poweroff_remove,
.driver = {
.name = "poweroff-restart",
.of_match_table = of_restart_poweroff_match,