snd_card_disconnect_sync(9)

✨ snd_card_disconnect_sync(9) ✨

okay so this is a page straight out of the Kernel API Manual, and bestie, it's a good one — it's the "break up with the card, then wait for everyone to leave the group chat" function 💅

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🎀 NAME 🎀

snd_card_disconnect_sync — disconnect the card and then wait until all the files get closed 🫶

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🦋 SYNOPSIS 🦋

void snd_card_disconnect_sync (struct snd_card *card );

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🌸 ARGUMENTS 🌸

• card — the card object you're disconnecting. that's it. that's the whole argument. the main character of this function tbh 👑

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⭐ DESCRIPTION ⭐

so here's the vibe: this calls snd_card_disconnect to disconnect all the belonging components, and then it waits until every pending file gets closed. no cap, it just sits there until everything's done. 😭

the whole point? it assures that all the accesses from user-space are finished — like, fully wrapped up — so that your driver can release its resources gracefully. it's giving responsible adult energy. it's giving "we're not leaving until everyone's got their coat" energy. 🧚

lowkey iconic that a function this chill is doing that much heavy lifting — it's literally the vibe check for "is user-space done yet" 💀

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💖 SEE ALSO 💖

honestly the whole friend group is here, and they're all in the kernel file ./sound/core/init.c:

• snd_device_alloc(9)
• snd_card_new(9)
• snd_devm_card_new(9)
• snd_card_free_on_error(9)
• snd_card_ref(9)
• snd_card_disconnect(9)
• snd_card_free_when_closed(9)
• snd_card_free(9)
• snd_card_set_id(9)
• snd_card_add_dev_attr(9)
• snd_card_register(9)
• snd_component_add(9)
• snd_card_file_add(9)
• snd_card_file_remove(9)
• snd_power_ref_and_wait(9)
• snd_power_wait(9)

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🌈 okay that's the whole page, bestie! this one lives down in ./sound/core, dated October 2026 — so go forth and disconnect synchronously, you absolute legend 👑✨