snd_dmaengin...release_chan(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_dmaengine_pcm_close_release_chan(9) 💖

okay so bestie, we're in the Kernel API Manual rn and this is literally the page for snd_dmaengine_pcm_close_release_chan — the function that closes a dmaengine based PCM substream and releases the channel. yes, both things. it's giving cleanup era. ✨

🌸 SYNOPSIS 🌸

int snd_dmaengine_pcm_close_release_chan (struct snd_pcm_substream
*substream );

like, look at her. one argument, one return type, zero drama. 💅

🎀 ARGUMENTS 🎀

  • substream — the PCM substream, bestie. that's the one. that's the whole vibe. 🫶

🦋 DESCRIPTION 🦋

so what she actually does: she releases the DMA channel that's associated with the PCM substream. that's it. that's the function. channel goes bye-bye, substream gets closed, everyone moves on. lowkey iconic for how clean it is ngl 💀✨

⭐ RETURN ⭐

  • zero if it worked — slay, success, we love to see it 👑
  • a negative error code if it didn't 😭 (so like, always check, ok?)

🌈 SEE ALSO 🌈

the kernel file lives at ./sound/core/pcm_dmaengine.c — that's the home base, fr fr 🏠

and then the whole friend group, in this exact order:

💀 real talk: if you're calling ..._close_release_chan, please know what snd_dmaengine_pcm_close(9) does first, iykyk. the whole squad is listed for a reason.

and that's the page!! 🎀 she lives in ./sound/core, dated October 2026, and yeah the header/footer keeps truncating her name to snd_dmaengin...release_chan(9) which is honestly so rude of the terminal 😭 but we know her full name and we stan her. bye bestie, go release those channels responsibly 💜🧚‍♀️

📦 where this page comes from