mux_read(9)

💅 mux_read(9) — a lil' page from the Kernel API Manual, bestie 🎀

okay so picture this: you're deep in the kernel, the vibe is immaculate, and somebody gotta move some characters out of a fifo. that's literally this function. welcome to the group chat ✨

---

🌸 NAME 🌸

mux_read — read chars from the mux fifo, no cap 💖

---

✨ SYNOPSIS ✨

void mux_read (struct uart_port *port );

that's it. that's the whole vibe check. returns nothing (void), takes exactly one thing. periodt 🫶

---

🎀 ARGUMENTS 🎀

• port — ptr to the uart_port, bestie. this is your main character right here 👑

---

🦋 DESCRIPTION 🦋

so what does it actually do? slay, i'll tell you: this reads all available data from the mux's fifo and pushes that data to the tty layer. that's the whole job. no leftovers, no crumbs — all the available data gets read and handed off 🔥

it's giving "middle of the pipeline, doing the quiet important work." nobody claps for the fifo reader but like… where would we be without her 😭💜

---

🌈 SEE ALSO 🌈

okay this is the part where we shout out the whole entourage 💅 every one of these lives in the kernel file ./drivers/tty/serial/mux.c, and honestly the mux family is huge — obsessed:

• 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_write(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)

iykyk 🧚‍♀️

---

ngl, this page is short and sweet — which is honestly such a flex. do not go inventing extra behavior for this function, bestie. read the fifo, push to the tty layer, go home 💀

---

and that's the whole page!! cutest lil manual entry fr fr 🍓 this one lives under ./drivers/tty/serial and it's dated October 2026 — go off, little serial driver era ⭐👑💜