usb_endpoint_dir_in(9)

💅 usb_endpoint_dir_in(9) 💅

okay bestie, welcome to the Kernel API Manual — today's main character is usb_endpoint_dir_in(9) and honestly? she's a tiny little function doing one (1) job and doing it flawlessly. 🎀

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✨ NAME ✨

usb_endpoint_dir_in — check if the endpoint has IN direction 🦋

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🌸 SYNOPSIS 🌸

int usb_endpoint_dir_in (const struct usb_endpoint_descriptor *epd );

like yes that's the whole thing, she's short and she knows it 💅

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🧚 ARGUMENTS 🧚

• epd — the endpoint you wanna check, bestie. that's it. that's the whole arg 🫶

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💖 DESCRIPTION 💖

so here's the vibe: it returns true if the endpoint is of type IN, otherwise it returns false. no cap, that's literally the entire personality. one job, zero drama, iconic behavior honestly 👑

like… is she an IN endpoint or not? ask and ye shall receive 🌈

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🔥 SEE ALSO 🔥

the whole friend group, fr fr — go say hi to all of them:

• Kernel file ./include/uapi/linux/usb/ch9.h struct usb_ctrlrequest(9)
• usb_endpoint_num(9)
• usb_endpoint_type(9)
• usb_endpoint_dir_out(9)
• usb_endpoint_xfer_bulk(9)
• usb_endpoint_xfer_control(9)
• usb_endpoint_xfer_int(9)
• usb_endpoint_xfer_isoc(9)
• usb_endpoint_is_bulk_in(9)
• usb_endpoint_is_bulk_out(9)
• usb_endpoint_is_int_in(9)
• usb_endpoint_is_int_out(9)
• usb_endpoint_is_isoc_in(9)
• usb_endpoint_is_isoc_out(9)
• usb_endpoint_maxp(9)
• usb_endpoint_maxp_mult(9)

bestie the "in" girlies and the "out" girlies both get a page and that's the balance the kernel deserves 💀✨

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aaaand that's the page!! 🍓 source vibes come straight from ./include/uapi/linux/usb and this cutie is dated October 2026 — mwah, hope that cleared things up, mwah 💜🧚‍♀️