devm_acpi_d...ler_register(9)

✨ devm_acpi_dma_controller_register(9) ✨

okay so bestie, welcome to the Kernel API Manual — this one's a lil' helper from ./drivers/dma and it's literally the resource-managed glow-up of acpi_dma_controller_register(). no cap, it's giving "register your DMA controller but make it self-cleaning" 💅

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🎀 NAME 🎀

devm_acpi_dma_controller_register — the resource managed version of acpi_dma_controller_register(). she's the same girlie but with automatic cleanup energy ✨

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🌸 SYNOPSIS 🌸

int devm_acpi_dma_controller_register (struct device *dev , struct
       dma_chan *(*acpi_dma_xlate) (struct acpi_dma_spec *, struct acpi_dma *)
       , void *data );

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🦋 ARGUMENTS 🦋

• dev — the device that's registering this DMA controller. it's the main character of this call, periodt 👑
• acpi_dma_xlate — the translation function. that's a function pointer, bestie, typed struct dma_chan *(*)(struct acpi_dma_spec *, struct acpi_dma *) — she takes an acpi_dma_spec * and an acpi_dma *, and hands you back a struct dma_chan * 🫶
• data — a pointer to controller specific data. whatever extra lil' bits your controller needs, they live here 💖

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💜 DESCRIPTION 💜

so this is the managed acpi_dma_controller_register. the DMA controllers registered through this function are automatically freed on driver detach — like, you don't have to do the cleanup yourself, the devm machinery handles it for you and honestly? obsessed 😭✨

want more info? go peek at acpi_dma_controller_register — that's the unmanaged sibling, iykyk 🌈

ngl, the whole point here is that you get the auto-free behavior instead of remembering to unwind manually. it's giving main character energy with built-in accountability 💅

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⭐ RETURN ⭐

0 on success, or an appropriate errno value on error. that's it, that's the vibe check 💀

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🍓 SEE ALSO 🍓

Kernel file ./drivers/dma/acpi-dma.c — that's the source, go read her:

• acpi_dma_parse_resource_group(9)
• acpi_dma_parse_csrt(9)
• acpi_dma_controller_register(9)
• acpi_dma_controller_free(9)
• acpi_dma_update_dma_spec(9)
• acpi_dma_parse_fixed_dma(9)
• acpi_dma_request_slave_chan_by_index(9)
• acpi_dma_request_slave_chan_by_name(9)
• acpi_dma_simple_xlate(9)

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and that's the whole page, bestie — no notes 💜

💖 this cutie came from ./drivers/dma, dated October 2026, and she's filed under devm_acpi_d...ler_register(9) — slay, go forth and register responsibly 🎀✨