audio_tx_completion(9)

💅 NAME 💅

So this is audio_tx_completion — and per the Kernel API Manual (that's the manual we're in, bestie 💖), it's literally the completion handler for tx channels. That's the whole vibe. Transmission channel says "I'm done!!" and this function is the one who handles it. ✨

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✨ SYNOPSIS ✨

int audio_tx_completion (struct most_interface *iface , int channel_id
);

Yeah that's it, two arguments, one int coming back at you. Slay. 🎀

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🎀 ARGUMENTS 🎀

• iface — a pointer to the interface instance. It's giving "which interface are we even talking about" energy, and the answer is this pointer. 🫶
• channel_id — the channel index/ID. Basically the channel's little name tag so we know which one we're dealing with. 👑

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🦋 DESCRIPTION 🦋

Okay so here's what goes down, no cap: this function searches the channel that belongs to this combination of the interface pointer and the channel ID — like, iface + channel_id and boom, that's your channel 💫 — and then it wakes a process sitting in the wait queue of this channel. Somebody's been napping in that wait queue and this is the polite little tap on the shoulder that says "you're up, bestie." 😭💖

And the return situation? Returns 0 on success or error code otherwise. That's it. Zero is the good one, anything else means something went sideways. 🌸

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🌈 SEE ALSO 🌈

Kernel file ./drivers/most/most_snd.c, and honestly the whole friend group is here:

struct channel(9), get_channel(9), copy_data(9), playback_thread(9), pcm_open(9), pcm_close(9), pcm_prepare(9), pcm_trigger(9), pcm_pointer(9), audio_probe_channel(9), audio_disconnect_channel(9), audio_rx_completion(9)

Like, the entire roster. Go read them, iykyk. 📚✨

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With love from ./drivers/most, dated October 2026 — that's the source and the date, and that's the whole page, periodt. 💅🎀🦋