uart_port_unlock_irqrestore(9)

💅 uart_port_unlock_irqrestore(9) — Kernel API Manual ✨

🌸 NAME 🌸

okay bestie, uart_port_unlock_irqrestore is literally the “unlock the UART port, restore interrupts” era 💅 it does exactly what it says on the label, no cap.

✨ SYNOPSIS ✨

void uart_port_unlock_irqrestore (struct uart_port *up , unsigned long
       flags );

🎀 ARGUMENTS 🎀

• up — pointer to the UART port structure 🫶 like, the actual port we’re unlocking, main character energy only.
• flags — the saved interrupt flags for restore ✨ keep them safe, then put them back, iykyk.

🦋 SEE ALSO 🦋

the whole friend group:

• Kernel file ./include/linux/serial_core.h and struct uart_ops(9)
• uart_port_set_cons(9)
• uart_port_lock(9)
• uart_port_lock_irq(9)
• uart_port_lock_irqsave(9)
• uart_port_trylock(9)
• uart_port_trylock_irqsave(9)
• uart_port_unlock(9)
• uart_port_unlock_irq(9)
• enum uart_pm_state(9)
• uart_xmit_advance(9)
• enum UART_TX_FLAGS(9)
• uart_port_tx_limited(9)
• uart_port_tx_limited_flags(9)
• uart_port_tx(9)
• uart_port_tx_flags(9)

source/version: ./include/linux · date: October 2026 — uart_port_unlock_irqrestore(9) signing off, slay 💜