mux_set_mctrl(9)

💅 mux_set_mctrl(9) 💅

okay bestie, welcome to the Kernel API Manual page for mux_set_mctrl(9) — manual name folded in near the top, header line not copy-pasted, we ate ✨

🌸 NAME 🌸

mux_set_mctrl — set the current state of the modem control inputs. 💖

✨ SYNOPSIS ✨

void mux_set_mctrl (struct uart_port *port , unsigned int mctrl );

🎀 ARGUMENTS 🎀

• port — -- undescribed -- 🙈 (yes, that's literally what the manual says, no cap)
• mctrl — Modem control bits. 💅

🦋 DESCRIPTION 🦋

okay so the tea is: the Serial MUX does not support CTS, DCD or DSR, so this function is ignored. Periodt. It's giving "you called but I'm not answering" energy 😭💀

🌈 SEE ALSO 🌈

• Kernel file ./drivers/tty/serial/mux.c — get_mux_port_count(9)
• mux_tx_empty(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_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)

xoxo, this was mux_set_mctrl(9) from source/version ./drivers/tty/serial, dated October 2026 — signing off with maximum main character energy 👑💜