usb_find_common_endpoints(9)

📦 version 7.3.1, in nixpkgs unstable

💅 usb_find_common_endpoints(9) 💅

okay so bestie, welcome to the Kernel API Manual entry for usb_find_common_endpoints — yes that's the whole function name, no we're not shortening it, she's iconic and she's got a long name, deal with it 💖

✨ NAME ✨

usb_find_common_endpoints — look up common endpoint descriptors 🎀

🌸 SYNOPSIS 🌸

int usb_find_common_endpoints (struct usb_host_interface *alt , struct
usb_endpoint_descriptor **bulk_in , struct usb_endpoint_descriptor
**bulk_out , struct usb_endpoint_descriptor **int_in , struct
usb_endpoint_descriptor **int_out );

like, five arguments, one int return, she's serving function signature realness 🔥

🦋 ARGUMENTS 🦋

  • alt — the alternate setting the function goes searching through, no cap 🔍
  • bulk_in — pointer to a descriptor pointer, or NULL. your girl gets to skip it if you pass NULL, we love options 💜
  • bulk_out — pointer to a descriptor pointer, or NULL
  • int_in — pointer to a descriptor pointer, or NULL
  • int_out — pointer to a descriptor pointer, or NULL

💖 DESCRIPTION 💖

So here's the tea: this function searches the alternate setting's endpoint descriptors for the first bulk-in, bulk-out, interrupt-in and interrupt-out endpoints, and it returns them in the provided pointers — but only the ones you actually asked for, because if a pointer is NULL she's literally not touching it, okay? 🙈

And if a requested endpoint is not found? the corresponding pointer gets set to NULL. not found bestie, moving on, we don't dwell 💅

⭐ RETURN ⭐

  • Zero if all requested descriptors were found — slay, everything ate 👑
  • -ENXIO otherwise — not the vibe, some endpoint ghosted us 😭

🌈 SEE ALSO 🌈

the whole usb friend group fr fr 🫶

signed, sealed, delivered by ./drivers/usb/core — dated October 2026 — page usb_find_common_endpoints(9), and that's periodt 💅✨

📦 where this page comes from