unregister_...rm_power_off(9)

💅 unregister_platform_power_off — fresh from the Kernel API Manual ✨

🌸 NAME 🌸

unregister_platform_power_off — Unregister platform-level power-off callback. That’s the name, bestie, and it understood the assignment. 🫶

🦋 SYNOPSIS 🦋

the signature, verbatim, no edits:

void unregister_platform_power_off (void (*power_off)(void) );

🎀 ARGUMENTS 🎀

• power_off — Power-off callback. That’s it. That’s the argument. 💖

✨ DESCRIPTION ✨

Okay so: this one unregisters previously registered platform power-off callback. It’s giving “undo button for a callback that already got registered,” and that is literally the whole description. No cap. 🦋

👑 SEE ALSO 👑

Kernel file ./kernel/reboot.c is the source home, and the whole reboot/power-off friend group is linked here:

• emergency_restart(9)
• register_reboot_notifier(9)
• unregister_reboot_notifier(9)
• register_restart_handler(9)
• unregister_restart_handler(9)
• do_kernel_restart(9)
• kernel_restart(9)
• kernel_halt(9)
• register_sys_off_handler(9)
• unregister_sys_off_handler(9)
• devm_register_sys_off_handler(9)
• devm_register_power_off_handler(9)
• devm_register_restart_handler(9)
• register_platform_power_off(9)
• do_kernel_power_off(9)
• kernel_can_power_off(9)
• kernel_power_off(9)
• orderly_poweroff(9)
• orderly_reboot(9)
• hw_failure_emergency_action_func(9)
• hw_failure_emergency_schedule(9)
• __hw_protection_trigger(9)

Signed, sealed, and shipped from the ./kernel source — October 2026 edition, mwah 💋🎀