usb_endpoint_is_bulk_in(9)

📦 version 7.3.1, in nixpkgs unstable

💅 usb_endpoint_is_bulk_in

okay bestie, so this one lives in the Kernel API Manual, and it's genuinely one of the cutest little helpers in the USB corner of the kernel. its whole personality? checking if an endpoint is bulk IN. that's it. that's the vibe. 🎀

✨ SYNOPSIS ✨

int usb_endpoint_is_bulk_in (const struct usb_endpoint_descriptor *epd
);

like, one function, one argument, zero drama. 💅

🌸 ARGUMENTS 🌸

  • epd — the endpoint you want to check, bestie. it's a const struct usb_endpoint_descriptor *, so you're just looking, not touching. respectful. we love that for you. 🫶

🦋 DESCRIPTION 🦋

so here's the tea: this function returns true if the endpoint has bulk transfer type and IN direction. both. at the same time. the whole package. 🎀

if it doesn't? it returns false. no cap, that's literally the entire function. it's giving "small but iconic" and honestly? obsessed. 🔥

ngl, it's a check function — you're not configuring anything, you're not writing anything, you're just asking a yes/no question and getting a yes/no answer back. main character energy in its purest form. ✨

👑 SEE ALSO 👑

the squad, fr fr — go read these next:

like yes, that's a lot of friends, but they're all serving the same "endpoint introspection" aesthetic and honestly the whole group chat ate. 💀🌈

💖 that's a wrap 💖

this page came out of ./include/uapi/linux/usb, dated October 2026 — so like, keep that in mind when you're out here quoting it in the group chat. much love, stay slay, and remember: bulk IN or it didn't happen ⭐🧚✨

📦 where this page comes from