snd_dma_pointer(9)

💖 snd_dma_pointer(9) 💖

okay so bestie, welcome to the Kernel API Manual entry for snd_dma_pointer(9) — yes that's the whole title, we're literally at the top of the page, and no I will not be normal about it 💅

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✨ NAME ✨

snd_dma_pointer — returns the current pointer into the DMA transfer buffer, in bytes, bestie. bytes. that's the unit. periodt.

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🌸 SYNOPSIS 🌸

unsigned int snd_dma_pointer (unsigned long dma , unsigned int size );

that's it. that's the whole call. two args, one return, zero drama 🎀

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🦋 ARGUMENTS 🦋

• dma — the dma number. like, which dma. the number of it. that's the vibe 🫶
• size — the dma transfer size. how big the transfer is. that's the whole story, no notes 🔥

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⭐ RETURN ⭐

The current pointer in DMA transfer buffer, in bytes. that's it. that's the answer. the pointer, the buffer, the bytes, the current-ness of it all ✨

ngl there's no error handling talked about here, no NULL, no negative, no "if this then that" — it just hands you the pointer in bytes and moves on with its life 😭

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👑 SEE ALSO 👑

• Kernel file ./sound/core/isadma.c — go read the source, iykwim
• snd_dma_program(9)
• snd_dma_disable(9)
• snd_devm_request_dma(9)

all four of these are right there, linked, iconic, no cap 🧚

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and that's the whole page!! love that for us. this one came from ./sound/core, dated October 2026, and it's filed under snd_dma_pointer(9) — go off, kernel docs, you ate 💖✨🎀🦋🌸💅🫶