acpi_get_dma_attr(9)

✨ acpi_get_dma_attr(9) — a Kernel API Manual moment 💅

okay so bestie, welcome to the Kernel API Manual page for acpi_get_dma_attr(9) — yes it's a whole manual page for one tiny function, and honestly? iconic of it. 🎀

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🌸 NAME 🌸

acpi_get_dma_attr — check the supported DMA attr for the specified device.

like, it literally just peeks at a device and tells you which DMA attributes it can vibe with. no cap. ✨

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🦋 SYNOPSIS 🦋

enum dev_dma_attr acpi_get_dma_attr (struct acpi_device *adev );

that's the whole thing. one function, one argument, one return type. main character energy fr fr. 💜

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🍓 ARGUMENTS 🍓

• adev — the pointer to the acpi device. that's it, that's the whole arg list. just hand it a struct acpi_device * and let it cook. 🫶

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🔥 DESCRIPTION 🔥

so what does it actually do? it returns enum dev_dma_attr. that's the whole description, bestie — the manpage said it, i said it, we're all saying it. 💀

like yes, that's a little mysterious of it, but that's the documented behaviour and we respect the documentation in this house. the return value is an enum dev_dma_attr, periodt. 👑

ngl, if you came here hoping for a five-paragraph essay about DMA internals, this is not that page. the facts stay exactly as written: it returns enum dev_dma_attr. 🌈

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👑 SEE ALSO 👑

okay this is the part where it name-drops all its friends, and honestly the friend group is huge. 💖

• the kernel file ./drivers/acpi/scan.c — that's where the source lives, iykyk
• acpi_scan_drop_device(9)
• acpi_fetch_acpi_dev(9)
• acpi_get_acpi_dev(9)
• acpi_dma_supported(9)
• acpi_dma_get_range(9)
• acpi_dma_configure_id(9)
• acpi_walk_dep_device_list(9)
• acpi_dev_clear_dependencies(9)
• acpi_dev_ready_for_enumeration(9)
• acpi_dev_get_next_consumer_dev(9)
• acpi_bus_scan(9)
• acpi_bus_trim(9)

go read those if you want the full lore. the way this function has connections. 😭

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and that's the page!! short, sweet, and fully documented. 10/10 no notes. 🧚

mwah 💋 — this little sign-off comes to you from ./drivers/acpi, dated October 2026, brought to you by the Kernel API Manual. stay slay, stay documented, and remember: enum dev_dma_attr. always. 🎀✨