snd_card_file_add(9)

💖 NAME — snd_card_file_add

snd_card_file_add — from the Kernel API Manual, bestie — is literally the function that adds the file to the file list of the card 💅✨

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🌸 SYNOPSIS

int snd_card_file_add (struct snd_card *card , struct file *file );

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🎀 ARGUMENTS

• card — the soundcard structure, the main character of this little operation 👑
• file — the file pointer, the other half of the duo 🫶

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🦋 DESCRIPTION

okay so this function adds the file to the file linked-list of the card. That linked-list is used to keep tracking the connection state, and to avoid the release of busy resources by hotplug. it’s giving “hotplug said not today” energy, fr fr 💅🔥

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✨ RETURN

It returns zero or a negative error code. that’s the whole vibe check — zero is the slay outcome, negative error code is the “mm okay bestie, something’s off” outcome 😭

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👑 SEE ALSO

• 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_disconnect_sync(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_remove(9)
• snd_power_ref_and_wait(9)
• snd_power_wait(9)

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byeee bestie 🫶 this one’s from source/version ./sound/core, dated October 2026, page snd_card_file_add(9) — mwah 💋🎀