serial_port_shutdown(9)

💅 serial_port_shutdown(9) — Kernel API Manual ✨

🎀 NAME 🎀

serial_port_shutdown — shut down hardware

✨ SYNOPSIS ✨

void serial_port_shutdown (struct tty_port *tport );

🫶 ARGUMENTS 🫶

• tport — the tty port to shut down, bestie. That’s the one getting the shutdown treatment 💅

🌸 DESCRIPTION 🌸

Okay so serial_port_shutdown shuts down a USB serial port — main character energy, honestly. It’s serialized against activate by the tport mutex, and it’s kept to matching open/close pairs of calls by the tty-port initialized flag.

🫶 Vibe check: not called if tty is console. Periodt. That detail is literally in the rules, so don’t skip it, iykyk.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/usb/serial/usb-serial.c
• serial_install(9)
• serial_cleanup(9)
• __usb_serial_register_drivers(9)
• usb_serial_deregister_drivers(9)

And that’s the whole page, bestie 🫶 this one’s source/version is ./drivers/usb/serial, dated October 2026, and it’s all about serial_port_shutdown(9) 💖✨