uart_port_trylock(9)

💅 uart_port_trylock(9) — the Kernel API Manual, bestie edition ✨

okay so picture this: it's a Kernel API Manual page, the vibes are immaculate, and it's all about uart_port_trylock. yes we're literally in the kernel, we're doing kernel things, and honestly? it's giving main character energy. let's get into it 🎀

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✨ NAME ✨

uart_port_trylock — try to lock the UART port 🦋

like, try. it's right there in the name. no promises, no drama, we just see if we can snag that lock. periodt 💅

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🌸 SYNOPSIS 🌸

bool uart_port_trylock (struct uart_port *up );

it hands you back a bool, it takes a struct uart_port *up, and that's the whole entire plot. no cap. 🫶

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💖 ARGUMENTS 💖

• up — pointer to UART port structure. that's it, that's the argument. give her the up and she'll do her thing 😭

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🦋 RETURN 🦋

• True if the lock was acquired — slay, you got it, you're iconic 👑
• false otherwise — no lock for you this time, bestie, but like... it happens 🙈

fr fr, that's the whole return contract. true = locked, false = not locked. don't overthink it, the manpage said what it said ✨

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🔥 SEE ALSO 🔥

okay this list is long, but every single one of these is part of the lore, so we're listing all of them, no skipping, no "etc." — iykyk 🌈

• the 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_irqsave(9)
• uart_port_unlock(9)
• uart_port_unlock_irq(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)

like, the whole friend group is here. go say hi to uart_port_unlock(9) especially — you two are gonna be besties 🫶💜

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⭐ lowkey important: this page lives in ./include/linux, and the version stamp is October 2026, and it's filed under uart_port_trylock(9). noted, archived, screenshotted for the group chat 📸🧚

and that's the page, bestie!! ./include/linux, October 2026, uart_port_trylock(9) — mwah, kiss the docs goodbye, you understood it the whole time 💖🎀💅