mux_write(9)

💅 mux_write(9) — like, the Kernel API Manual page, bestie 🎀

okay so picture this: you're deep in the Kernel API Manual and you land on mux_write(9) and you're like "what does this even do" — don't worry, I got you. Sit down, hydrate, let's go ✨

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🌸 NAME 🌸

mux_write — the function that writes chars into the mux fifo. That's it. That's the whole vibe. 🫶

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🦋 SYNOPSIS 🦋

void mux_write (struct uart_port *port );

literally one argument, one return type of void, no drama 💅

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⭐ ARGUMENTS ⭐

• port — a ptr to the uart_port. yes bestie, a pointer. it's giving "structure reference" energy and we respect it 👑

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💖 DESCRIPTION 💖

So here's the tea ☕: this function writes all the data from the uart buffer over into the mux fifo. Every last char. Not some of it, not a little snack of it — all of it. slay 🔥

no cap, that's genuinely the whole description. short and iconic, main character energy fr fr ✨

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🌈 SEE ALSO 🌈

omg the friend group 💕 these are all the mux functions you should go say hi to, plus the kernel file they live in:

• kernel file ./drivers/tty/serial/mux.c
• get_mux_port_count(9)
• mux_tx_empty(9)
• mux_set_mctrl(9)
• mux_get_mctrl(9)
• mux_stop_tx(9)
• mux_start_tx(9)
• mux_stop_rx(9)
• mux_break_ctl(9)
• mux_read(9)
• mux_startup(9)
• mux_shutdown(9)
• mux_set_termios(9)
• mux_type(9)
• mux_release_port(9)
• mux_request_port(9)
• mux_config_port(9)
• mux_verify_port(9)
• mux_poll(9)
• mux_probe(9)
• mux_init(9)
• mux_exit(9)

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aaaand that's the page!! 🎀 tysm for reading, you ate that ngl 💜

okay so the sign-off: this whole thing lives under ./drivers/tty/serial and it's dated October 2026 — so yeah, it's from the future, we love a timestamp that ate 👑✨ byeeee 🦋