snd_hda_jack_poll_all(9)

💖 snd_hda_jack_poll_all — Kernel API Manual, but make it make sense 💖

okay so bestie, welcome to the snd_hda_jack_poll_all(9) page from the Kernel API Manual ✨ this is the little corner of the kernel where HDA audio jacks get their vibe check 🎀

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✨ NAME ✨

snd_hda_jack_poll_all — poll all jacks 👑

like, all of them. every single jack that's pollable. no jack left behind 💅

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🌸 SYNOPSIS 🌸

void snd_hda_jack_poll_all (struct hda_codec *codec );

returns void, so don't go looking for a return value, it's giving "I do the work and leave" energy 😌

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🦋 ARGUMENTS 🦋

• codec — the HDA codec 💿 that's the one and only thing you hand it. the codec. that's it. that's the argument.

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🧚 DESCRIPTION 🧚

okay so here's the tea ☕ — this function polls all the detectable jacks that have the dirty flag set, updates their status, calls the callbacks, and then calls snd_hda_jack_report_sync if it finds any changes at all 🔥

so like, the full glow-up pipeline:

1. poll every detectable jack with a dirty flag 🧼
2. update the status ✨
3. call the callbacks 📞
4. if any changes are found → call snd_hda_jack_report_sync 🎉

no cap, if nothing changed, no sync. it's lowkey efficient like that 💅

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👑 SEE ALSO 👑

bestie, the friend group is huge, here's everyone 🫶 the kernel file is ./sound/hda/common/jack.c 📁

• is_jack_detectable(9)
• snd_hda_jack_tbl_get_mst(9)
• snd_hda_jack_tbl_get_from_tag(9)
• snd_hda_jack_tbl_new(9)
• snd_hda_jack_set_dirty_all(9)
• snd_hda_jack_pin_sense(9)
• snd_hda_jack_detect_state_mst(9)
• snd_hda_jack_detect_enable_callback_mst(9)
• snd_hda_jack_detect_enable(9)
• snd_hda_jack_set_gating_jack(9)
• snd_hda_jack_bind_keymap(9)
• snd_hda_jack_set_button_state(9)
• snd_hda_jack_report_sync(9)
• snd_hda_jack_add_kctl_mst(9)
• snd_hda_jack_add_kctls(9)
• snd_hda_jack_unsol_event(9)

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and that's the page, bestie 🎀 sign-off time: this one lives in ./sound/hda/common, dated October 2026, and it's literally titled snd_hda_jack_poll_all(9) — go poll those jacks, slay 💜✨