cdns_uart_shutdown(9)

🎀 cdns_uart_shutdown(9) 🎀

ok so this is a page from the Kernel API Manual (section 9, the kernel-functions girlies 💅) and bestie, it's a short one but it matters. Say hi to cdns_uart_shutdown — it's the function that gets called when an application closes a cdns_uart port. That's it, that's the whole vibe: app says "bye," this thing gets poked. ✨

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🌸 NAME 🌸

cdns_uart_shutdown — literally the function that gets called when an application closes a cdns_uart port 🫶

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✨ SYNOPSIS ✨

void cdns_uart_shutdown (struct uart_port *port );

no cap, that's the whole signature — returns void, takes one pointer, does its little thing 💖

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🦋 ARGUMENTS 🦋

• port — the handle to the uart_port structure. yeah. that's the one. hand it over and it's main character energy for this function 👑

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🌈 SEE ALSO 🌈

ok this is the part where you meet the entire friend group, and there are a LOT of them. the source lives in the kernel file ./drivers/tty/serial/xilinx_uartps.c, and here's everyone else you might wanna go hang out with:

• struct cdns_uart(9)
• cdns_uart_handle_rx(9)
• cdns_rts_gpio_enable(9)
• cdns_rs485_tx_setup(9)
• cdns_rs485_rx_setup(9)
• cdns_uart_tx_empty(9)
• cdns_rs485_rx_callback(9)
• cdns_calc_after_tx_delay(9)
• cdns_uart_handle_tx(9)
• cdns_uart_isr(9)
• cdns_uart_calc_baud_divs(9)
• cdns_uart_set_baud_rate(9)
• cdns_uart_clk_notifier_cb(9)
• cdns_rs485_tx_callback(9)
• cdns_uart_start_tx(9)
• cdns_uart_stop_tx(9)
• cdns_uart_stop_rx(9)
• cdns_uart_break_ctl(9)
• cdns_uart_set_termios(9)
• cdns_uart_startup(9)
• cdns_uart_type(9)
• cdns_uart_verify_port(9)
• cdns_uart_request_port(9)
• cdns_uart_release_port(9)
• cdns_uart_config_port(9)
• cdns_uart_get_mctrl(9)
• cdns_uart_console_putchar(9)
• cdns_uart_console_write(9)
• cdns_uart_console_setup(9)
• cdns_uart_suspend(9)
• cdns_uart_resume(9)
• cdns_rs485_config(9)
• cdns_uart_probe(9)
• cdns_uart_remove(9)

like. that's a whole group chat right there 😭💀 every one of them is worth a read, iykyk.

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💜 tiny reminder bestie: this page lives under ./drivers/tty/serial, dated October 2026, and it's cdns_uart_shutdown(9) from the Kernel API Manual — that's the source, the version, and the date all wrapped up with a bow 🎀 go close some ports, slay 💅🌸