snd_pcm_drain_done(9)

✨ snd_pcm_drain_done(9) ✨

okay so welcome to the Kernel API Manual, bestie — this page is all about snd_pcm_drain_done, and it's giving very specific audio-stream energy 🎧💖

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🌸 NAME 🌸

snd_pcm_drain_done — stop the DMA only when the given stream is playback 💅✨

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🦋 SYNOPSIS 🦋

int snd_pcm_drain_done (struct snd_pcm_substream *substream );

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🎀 ARGUMENTS 🎀

• substream — the PCM substream 👑 that's literally the one you're handing over

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💜 DESCRIPTION 💜

After stopping, the state is changed to SETUP ✨ and that's the whole glow-up.

Unlike snd_pcm_stop, this affects only the given stream — no cap, it does not spread to the whole crew 💀🙈

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🌈 RETURN 🌈

Zero if successful, or a negative error code 😭 — pretty straightforward, ngl.

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🫶 SEE ALSO 🫶

Kernel file: ./sound/core/pcm_native.c

• snd_pcm_stream_lock(9)
• snd_pcm_stream_unlock(9)
• snd_pcm_stream_lock_irq(9)
• snd_pcm_stream_unlock_irq(9)
• snd_pcm_stream_unlock_irqrestore(9)
• snd_pcm_set_state(9)
• snd_pcm_get_state(9)
• snd_pcm_hw_params_choose(9)
• snd_pcm_start(9)
• snd_pcm_stop(9)
• snd_pcm_stop_xrun(9)
• snd_pcm_suspend_all(9)
• snd_pcm_prepare(9)
• snd_pcm_kernel_ioctl(9)
• snd_pcm_lib_default_mmap(9)
• snd_pcm_lib_mmap_iomem(9)

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🫶 that's the whole vibe — source/version: ./sound/core · date: October 2026 · page: snd_pcm_drain_done(9) — bye bestie, go handle that playback stream with main character energy 💅✨🔥