snd_usb_add_endpoint(9)

💖 NAME 💖

okay bestie, welcome to the Kernel API Manual page for snd_usb_add_endpoint(9) 💅 this one is all about how to add an endpoint to an USB audio chip ✨

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🌸 SYNOPSIS 🌸

int snd_usb_add_endpoint (struct snd_usb_audio *chip , int ep_num , int
       type );

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🎀 ARGUMENTS 🎀

• chip — the chip 🫶 like, the USB audio chip you're adding the endpoint to.
• ep_num — the number of the endpoint to use. literally the endpoint number, no cap.
• type — either SND_USB_ENDPOINT_TYPE_DATA or SND_USB_ENDPOINT_TYPE_SYNC ✨ those are the two type options.

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🦋 DESCRIPTION 🦋

okay so here's the vibe: if the requested endpoint has not been added to the given chip before, a new instance is created 💖

It returns zero on success or a negative error code 😭 so check that return value, bestie.

New endpoints will be added to chip->ep_list and freed by calling snd_usb_endpoint_free_all 🎀

⚠️ for SND_USB_ENDPOINT_TYPE_SYNC, the caller needs to guarantee that bNumEndpoints > 1 beforehand. like, that's on you, bestie — make sure it's true before you call this 🙈

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🌈 SEE ALSO 🌈

• Kernel file ./sound/usb/endpoint.c
• snd_usb_endpoint_implicit_feedback_sink(9)
• snd_usb_endpoint_start(9)
• snd_usb_endpoint_stop(9)
• snd_usb_endpoint_release(9)
• snd_usb_endpoint_free_all(9)

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alright that's the whole page, bestie 🫶 signing off from source/version ./sound/usb, dated October 2026, all about snd_usb_add_endpoint(9) 💖 mwah 💋✨