serial_base_...rred_console(9)

💅 serial_base_...rred_console(9) 💅

ok so this is a page straight out of the Kernel API Manual, bestie — yes that Kernel API Manual — and we're about to make serial_base_match_and_update_preferred_console make sense. grab a strawberry drink 🍓 and let's go.

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✨ NAME ✨

serial_base_match_and_update_preferred_console — the little function whose whole personality is matching a preferred console and then updating it. match and update. that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

int serial_base_match_and_update_preferred_console (struct uart_driver
*drv , struct uart_port *port );

it takes two things and gives you back an int. that's it, that's the whole energy. ✨

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🦋 ARGUMENTS 🦋

• drv — your serial port device driver. the driver. the main character in this scenario. 👑
• port — a serial port instance. one specific port, living its life, hoping to get matched. 🫶

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💖 DESCRIPTION 💖

okay so real talk — this function tries to match and update the preferred console for a serial port, specifically for the kernel command line option console=DEVNAME:0.0. like, that's the whole assignment. the way that it goes looking for a match so the preferred console can get updated? obsessed. 🔥

now for the caveat, and this one matters, no cap: it cannot be called early for ISA ports. it depends on struct device. so like, if you were thinking about calling it early for an ISA port — don't. it's giving "not yet, babe." 💀

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⭐ RETURN ⭐

• 0 on success 🎉
• a negative error code on failure 😭

that's the whole return situation. binary-ish. very clean. we love.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/tty/serial/serial_base_bus.c — go read it, iykyk 🧚

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lowkey a reminder: ISA ports + early calls = no. the struct device dependency is not a suggestion, it's a boundary. periodt. 💅

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that's the whole page, bestie! this one came from ./drivers/tty/serial, dated October 2026, and it's literally titled serial_base_...rred_console(9) — slay, you made it to the end. 💜🎀🦋