fsl_dma_hw_free(9)

📦 version 7.3.1, in nixpkgs unstable

💅 fsl_dma_hw_free(9) — like, the Kernel API Manual page you've been waiting for 🎀

okay so bestie, welcome to the Kernel API Manual entry for fsl_dma_hw_free(9). pull up a chair, grab a strawberry 🍓, and let's get into it.

✨ NAME ✨

fsl_dma_hw_free — the function that releases the resources you allocated in fsl_dma_hw_params(). yes, it's the cleanup bestie. the "we're so done here" era. 💅

🌸 SYNOPSIS 🌸

int fsl_dma_hw_free (struct snd_soc_component *component , struct
snd_pcm_substream *substream );

like, it takes two things and returns an int. that's the whole vibe. 🦋

🫶 ARGUMENTS 🫶

  • component — ngl, the original literally just says -- undescribed -- 😭 so we're keeping it 100: it's undescribed. no cap, that's all we got.
  • substream — same situation, bestie. -- undescribed -- 🙈 the docs did NOT come through on this one.
fr fr, we're not out here making things up. if the manual says undescribed, it's undescribed. 🤷‍♀️

🔥 DESCRIPTION 🔥

okay so what it actually does: it releases the resources that were allocated in fsl_dma_hw_params, and it de-programs the registers. the way it just... undoes everything and leaves the registers looking clean. iconic. ✨

and here's the part that's lowkey a slay: this function can be called multiple times. yes bestie, multiple times. it's not one of those "you only get one shot" situations. 🎀

🌈 SEE ALSO 🌈

the whole friend group, in the kernel file ./sound/soc/fsl/fsl_dma.c:

go read those too, iykyk 👑

and that's the page, bestie 💜 this lil masterpiece lives in ./sound/soc/fsl, dated October 2026. mwah, go free those resources. periodt. 🧚‍♀️✨

📦 where this page comes from