usb_urb_ep_type_check(9)

💖 usb_urb_ep_type_check(9) 💖

okay so this is a page from the Kernel API Manual, and it's about usb_urb_ep_type_check — the tiny little vibe-check function for USB endpoints. bestie, it's short, it's sweet, it's giving "one job and it does it" energy. let's get into it ✨

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🌸 NAME 🌸

usb_urb_ep_type_check — a lil sanity check of the endpoint in the given urb 🫶

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🎀 SYNOPSIS 🎀

int usb_urb_ep_type_check (const struct urb *urb );

that's it. that's the whole signature. no cap 💅

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🦋 ARGUMENTS 🦋

• urb — the urb that's about to get checked. yes, this one. the one you're holding. put it under the microscope 🔍

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💜 DESCRIPTION 💜

so what does it actually do? it performs a light-weight sanity check for the endpoint inside the urb you handed it. light-weight meaning it's not doing a whole deep dive, it's just a quick little glance, a vibe check if you will. ✨

and then:

• if the urb contains a valid endpoint, it returns 0 — slay, we're good 💖
• otherwise, it returns a negative error code — not slay, something's off 😭

that's literally the whole function. short king behavior. 👑

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🌈 SEE ALSO 🌈

the kernel file lives at ./drivers/usb/core/urb.c, and while you're there, go say hi to the whole urb friend group — they're all linked below and honestly? iconic lineup:

• usb_init_urb(9)
• usb_alloc_urb(9)
• usb_free_urb(9)
• usb_get_urb(9)
• usb_anchor_urb(9)
• usb_unanchor_urb(9)
• usb_pipe_type_check(9)
• usb_submit_urb(9)
• usb_unlink_urb(9)
• usb_kill_urb(9)
• usb_poison_urb(9)
• usb_block_urb(9)
• usb_kill_anchored_urbs(9)
• usb_poison_anchored_urbs(9)
• usb_unpoison_anchored_urbs(9)
• usb_anchor_suspend_wakeups(9)
• usb_anchor_resume_wakeups(9)
• usb_wait_anchor_empty_timeout(9)
• usb_get_from_anchor(9)
• usb_scuttle_anchored_urbs(9)
• usb_anchor_empty(9)

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okay that's the whole page, go forth and validate those endpoints bestie 🧚💫

this one came out of ./drivers/usb/core and it's dated October 2026 — so mark your calendars, keep the source dir in your heart, and remember: the facts stayed exactly the same even though i made it cute. periodt. 💅🎀