uaudio_dev_intf_cleanup(9)

💅 uaudio_dev_intf_cleanup — a Kernel API Manual moment (yes, section 9, we're in kernel land bestie)

okay so picture this: you're deep in the uaudio corner of the kernel, the USB audio offload girlies are wrapping up, and somebody's gotta tidy the transfer rings. That's this function. She's the cleanup crew and she's serving, no cap. ✨

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🌸 NAME 🌸

uaudio_dev_intf_cleanup — cleanup transfer resources. That's it, that's the whole vibe. She frees the stuff. Iconic behavior honestly.

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🎀 SYNOPSIS 🎀

void uaudio_dev_intf_cleanup (struct usb_device *udev , struct intf_info
*info );

literally just one call, no return value, she does her thing and dips 💨

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✨ ARGUMENTS ✨

• udev — the usb device 🫶 that's your USB device right there
• info — the usb offloading interface 💖 the offload interface, in all her glory

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🦋 DESCRIPTION 🦋

So what she actually does: she cleans up the transfer ring related resources which are assigned per endpoint from XHCI 🔥 — like, per-endpoint transfer ring resources, XHCI assigns them, and she's the one who tidies them away.

And when does she get called? She's invoked when the USB endpoints are no longer in use by the adsp 👑 — i.e. the moment the adsp is done with those endpoints, she swoops in. main character energy fr fr. 💅

no skipping steps here — the cleanup is the whole point, bestie. Don't leave those transfer ring resources hanging around looking a mess 🙈

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💜 SEE ALSO 💜

Kernel file ./sound/usb/qcom/qc_audio_offload.c — go read her friends, the whole friend group is here:

• uaudio_iommu_unmap(9)
• uaudio_iommu_map_pa(9)
• uaudio_event_ring_cleanup_free(9)
• disable_audio_stream(9)
• uaudio_sideband_notifier(9)
• qmi_bye_cb(9)
• qmi_svc_disconnect_cb(9)
• enable_audio_stream(9)
• uaudio_transfer_buffer_setup(9)
• uaudio_endpoint_setup(9)
• uaudio_event_ring_setup(9)
• uaudio_populate_uac_desc(9)
• prepare_qmi_response(9)
• handle_uaudio_stream_req(9)
• qc_usb_audio_offload_init_qmi_dev(9)
• qc_usb_audio_offload_probe(9)
• qc_usb_audio_cleanup_qmi_dev(9)
• qc_usb_audio_offload_disconnect(9)
• qc_usb_audio_offload_suspend(9)

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okay that's the page!! 💖 this one lives at ./sound/usb/qcom (the source/version corner, you know the one) and she's dated October 2026 ⭐ — so yeah, mark your calendar bestie, and go clean up those transfer resources. slay 🧚‍♀️🌸💅