uart_port_tx_limited_flags(9)

✨ uart_port_tx_limited_flags ✨ — Kernel API Manual

Okay so bestie, picture this: you're deep in the kernel, you're doing UART transmit things, and you need a helper that's literally uart_port_tx_limited but with flags. That's this function. It's the transmit helper for uart_port with count limiting — with flags. The name says it all, periodt. 💅

🌸 SYNOPSIS 🌸

uart_port_tx_limited_flags (port , ch , flags , count , tx_ready ,
       put_char , tx_done );

🎀 ARGUMENTS 🎀

These are the seven parameters you're working with, bestie — no cap, all of them matter:

• port — the uart port, your main character for this whole operation
• ch — a variable to store a character to be written to the HW, like a little character-holder bestie
• flags — UART_TX_NOSTOP or similar, the vibe flags that ride along with this transmission
• count — a limit of characters to send, the cap on how much we're doing today
• tx_ready — can HW accept more data function, the "are we still going?" check
• put_char — function to write a character, the actual scribe doing the work
• tx_done — function to call after the loop is done, the afterparty callback 🎉

💖 DESCRIPTION 💖

See uart_port_tx_limited for more details. That's the whole tea — this page is the flags-flavoured sibling of that one, so if you need the full lore, go read that. This page is short and iconic and knows exactly what it is. 🫶

🌈 SEE ALSO 🌈

All the related reads, linked for your convenience:

• Kernel file ./include/linux/serial_core.h
• struct uart_ops(9)
• uart_port_set_cons(9)
• uart_port_lock(9)
• uart_port_lock_irq(9)
• uart_port_lock_irqsave(9)
• uart_port_trylock(9)
• uart_port_trylock_irqsave(9)
• uart_port_unlock(9)
• uart_port_unlock_irq(9)
• uart_port_unlock_irqrestore(9)
• enum uart_pm_state(9)
• uart_xmit_advance(9)
• enum UART_TX_FLAGS(9)
• uart_port_tx_limited(9)
• uart_port_tx(9)
• uart_port_tx_flags(9)

So yeah, that's the whole manual, bestie. This gem lives in ./include/linux, dated October 2026, and it's brought to you as uart_port_tx_limited_flags(9) — go transmit responsibly with your flags and count limits. Slay. 🔥👑