snd_hdac_ext...link_by_addr(9)

💅 NAME 💅

okay so bestie, this page is literally the Kernel API Manual (section 9) glow-up of snd_hdac_ext_bus_get_hlink_by_addr — the girlie whose whole job is get hlink at specified address. she's a finder, a looker-upper, a "where's my link at" icon 🎀

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✨ SYNOPSIS ✨

struct hdac_ext_link * snd_hdac_ext_bus_get_hlink_by_addr (struct
hdac_bus *bus , int addr );

that's it. that's the whole vibe. two args, one pointer back, no cap 🫶

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🌸 ARGUMENTS 🌸

• bus — the parent bus device that our hlink belongs to. like, her mom. her origin story. 👑
• addr — the codec device address. this is the little number you're matching against, iykyk 🔍

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💖 DESCRIPTION 💖

Returns the hlink object — or NULL if a matching hlink isn't found 😭. that's literally the entire plot. you hand her a bus and an address, she either comes back with your hlink or she comes back with nothing at all, and honestly? both are valid. NULL is not a personality flaw, it's just her saying "not here, babe" 💀

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🦋 SEE ALSO 🦋

• Kernel file ./sound/hda/core/ext/controller.c
• snd_hdac_ext_bus_ppcap_enable(9)
• snd_hdac_ext_bus_ppcap_int_enable(9)
• snd_hdac_ext_bus_get_ml_capabilities(9)
• snd_hdac_ext_link_free_all(9)
• snd_hdac_ext_bus_get_hlink_by_name(9)
• snd_hdac_ext_bus_link_power_up(9)
• snd_hdac_ext_bus_link_power_down(9)
• snd_hdac_ext_bus_link_power_up_all(9)
• snd_hdac_ext_bus_link_power_down_all(9)
• snd_hdac_ext_bus_link_set_stream_id(9)
• snd_hdac_ext_bus_link_clear_stream_id(9)

go read them all, they're the friend group and every single one of them ate 🔥

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remember bestie: NULL is a real answer, not a bug. check before you dereference, or the kernel will humble you 😭💅

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and that's the page, periodt 💜 she lives in ./sound/hda/core/ext, she's rocking the October 2026 timestamp, and this was your girl signing off from the Kernel API Manual — stay hydrated, check your pointers, and slay 🧚‍♀️💖✨