plx9080_abort_dma(9)

💖 plx9080_abort_dma 💖

okay so bestie, welcome to the Kernel API Manual ✨ — today's main character is plx9080_abort_dma, and yes she's here to abort a PLX PCI 9080 DMA transfer. like, she stops the thing. that's her whole job and she eats every time 💅

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✨ SYNOPSIS ✨

int plx9080_abort_dma (void __iomem *iobase , unsigned int channel );

that's the whole signature, no cap 🫶

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🎀 ARGUMENTS 🎀

• iobase — the remapped base address of the configuration registers. literally where the config registers live, k?
• channel — the DMA channel number, and it's 0 or 1. only those two, bestie, don't get creative 🙈

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🦋 DESCRIPTION 🦋

so what she does: she aborts the DMA transfer on the channel 💀🔥

but here's the vibe check — that channel has to have been enabled and started beforehand. like, you can't abort something that was never running, that's not how any of this works 😭 it's giving "you have to actually start the homework before you can procrastinate on it."

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🌸 RETURN 🌸

• 0 on success — slay, the abort went through 🎉
• -ETIMEDOUT if it timed out waiting for the abort to complete — yeah, she waited and it never finished, so that's the error you get 😔

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/comedi/drivers/plx9080.h 🌈
• struct plx_dma_desc(9) — go read it, iykyk 👑

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bestie reminder: the channel must be enabled and started beforehand, and if the abort doesn't complete in time you're getting -ETIMEDOUT. that's the whole tea ☕ 💜

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and that's the page!! brought to you by ./drivers/comedi/drivers 🍓 — October 2026, plx9080_abort_dma(9), periodt 💅✨