hdac_get_device_id(9)

💅 hdac_get_device_id(9) — the Kernel API Manual, bestie edition

Okay so picture this: you're deep in the HD-audio core, you've got a codec device, you've got a driver, and you just need to know do these two kids match? That's this function. It's giving matchmaker. It's giving vibe check for hardware. Let's get into it 🎀

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✨ NAME ✨

hdac_get_device_id — literally just gets the hdac device id entry, no cap 🫶

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🌸 SYNOPSIS 🌸

const struct hda_device_id * hdac_get_device_id (struct hdac_device
*hdev , const struct hdac_driver *drv );

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🦋 ARGUMENTS 🦋

• hdev — the HD-audio core device 💖 like, the device in question
• drv — the HD-audio codec driver, aka the other half of this whole situation

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👑 DESCRIPTION 👑

So what it actually does: it compares the hdac device's vendor_id and revision_id against the hdac_device driver's id_table, and then returns the matching device id entry. That's it. That's the whole plot 🍓

Lowkey iconic behaviour tbh — it's a lookup, it finds your match, it hands it to you. Periodt.

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🌈 SEE ALSO 🌈

Kernel file ./sound/hda/core/hda_bus_type.c — go read it, iykyk 👀

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⭐ little reminder bestie: the answer you get back is a pointer to the entry, so don't go freeing it or anything weird, mwah 💜

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Signed, sealed, delivered 💌 — this little love letter lives in the kernel tree at ./sound/hda/core, dated October 2026, and it's the hdac_get_device_id(9) page from the Kernel API Manual. Slay 💅✨