uart_get_lsr_info(9)

okay so bestie 💖 this is uart_get_lsr_info(9) from the Kernel API Manual — the whole page, no cap. It’s giving “get line status register info,” and we’re keeping every detail, periodt. ✨

🌸 NAME 🌸

uart_get_lsr_info — get line status register info. That’s the vibe. 🎀

✨ SYNOPSIS ✨

int uart_get_lsr_info (struct tty_struct *tty , struct uart_state *state
       , unsigned int __user *value );

Lowkey iconic signature, bestie. 💅

🫶 ARGUMENTS 🫶

• tty — tty associated with the UART. The tty bestie in this situation. 💖
• state — UART being queried. The UART you’re checking on. ✨
• value — returned modem value. Yep, that’s the modem value coming back. 🎀

🦋 SEE ALSO 🦋

• Kernel file: ./drivers/tty/serial/serial_core.c
• uart_write_wakeup(9)
• uart_update_timeout(9)
• uart_get_baud_rate(9)
• uart_get_divisor(9)
• uart_console_write(9)
• uart_parse_earlycon(9)
• uart_parse_options(9)
• uart_set_options(9)
• uart_change_pm(9)
• uart_register_driver(9)
• uart_unregister_driver(9)
• serial_core_add_one_port(9)
• serial_core_remove_one_port(9)
• uart_match_port(9)
• uart_handle_dcd_change(9)
• uart_handle_cts_change(9)
• uart_insert_char(9)
• uart_try_toggle_sysrq(9)
• uart_get_rs485_mode(9)

That’s it, bestie 🫶 — this page’s source/version is ./drivers/tty/serial, dated October 2026, and it’s filed under uart_get_lsr_info(9). Slay and bye 💅✨