snd_hdac_bus_add_device(9)

💖 snd_hdac_bus_add_device(9) 💖

okay so this is a page from the Kernel API Manual, bestie — section 9, kernel-adjacent, very much main character energy. the function is snd_hdac_bus_add_device, and yes it does exactly what it says on the tin: it adds a codec to a bus. iconic behavior, honestly.

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✨ NAME ✨

snd_hdac_bus_add_device — the one where you add a codec to bus 🎀

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🌸 SYNOPSIS 🌸

int snd_hdac_bus_add_device (struct hdac_bus *bus , struct hdac_device
*codec );

like, that's the whole vibe. two args, one int coming back at you. 🦋

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💅 ARGUMENTS 💅

• bus — the HDA core bus. this is the hangout spot.
• codec — the HDA core device you're adding. this is the new bestie joining the group chat.

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👑 DESCRIPTION 👑

so what it does: it adds the given codec to the list in the bus. the way that it also updates the caddr_tbl array and the codec_powered bits — like, both of them, not just one. multitasking queen. ✨

returns zero if success, or a negative error code if it's giving "not today." 💀 so like, always check your return value, no cap.

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🫶 SEE ALSO 🫶

• Kernel file ./sound/hda/core/bus.c
• snd_hdac_bus_init(9)
• snd_hdac_bus_exit(9)
• snd_hdac_bus_exec_verb(9)
• snd_hdac_bus_exec_verb_unlocked(9)
• snd_hdac_bus_queue_event(9)
• snd_hdac_bus_remove_device(9) — the reverse one, for when it's time to say bye 🙈

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reminder bestie: this is a kernel API manual page, so keep your #includes and your struct pointers exactly as written. no renaming, no "improving." the kernel does not appreciate a makeover. 💀

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k bye, that's the whole page! 🌈 this lil gem lives in ./sound/hda/core and is dated October 2026 — so she's fresh, she's current, she's literally timestamped and everything. mwah 💋 🍓