uart_port_unlock_irq(9)

💖 uart_port_unlock_irq 💖

okay so bestie, welcome to the uart_port_unlock_irq(9) page from the Kernel API Manual — this is the little function that lets the UART port go and turns interrupts back on, and honestly? it's giving relief-after-a-long-hug energy 🫶

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✨ NAME ✨

uart_port_unlock_irq — unlock the UART port and re-enable interrupts 🔓⚡

like, that's literally the whole job. unlock the port, interrupts back on. slay.

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🌸 SYNOPSIS 🌸

void uart_port_unlock_irq (struct uart_port *up );

no return value, it just does the thing and dips 💅

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🎀 ARGUMENTS 🎀

• up — pointer to the UART port structure. that's your port bestie, the one you're unlocking ✨

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🦋 SEE ALSO 🦋

the whole friend group, fr fr — go read these too:

• kernel file ./include/linux/serial_core.h 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_irqrestore(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)

lowkey if you locked it, you gotta unlock it — that's the vibe check 🙈

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and that's the whole page, no cap 🧚 this one lives in ./include/linux, dated October 2026, and it's uart_port_unlock_irq(9) — now go unlock that port and let the interrupts breathe, mwah 💖🎀💜