free_usb_request(9)

✨ free_usb_request(9) — like, the kernel API manual bestie ✨

okay so welcome to the free_usb_request page from the Kernel API Manual — yes it's a whole manpage and yes it's short, but it's important, so sit with me for a sec 💖

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🌸 NAME 🌸

free_usb_request — frees a usb_request object and its buffer. that's it. that's the whole job. and it slays at it 💅

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🎀 SYNOPSIS 🎀

void free_usb_request (struct usb_request *req );

literally one call, no cap. <kbd> not needed here bestie, it's just C 🫶

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🦋 ARGUMENTS 🦋

• req — the request being freed. this is the struct usb_request * you're handing over to be yeeted into the void 🙈

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⭐ DESCRIPTION ⭐

okay so here's the tea 🍓 — this helper function frees both the request's buffer and the request object itself, and it does that by calling usb_ep_free_request. two birds, one iconic little function ✨

its signature is designed to be used with DEFINE_FREE so you get automatic, scope-based cleanup for usb_request pointers. like, it cleans up after itself when it goes out of scope?? main character energy fr fr 👑 no manual free-ing, no leaks, no stress — the vibe check is passed 💜

ngl this is the kind of function that makes you go "oh she's that girl" — scope-based cleanup is genuinely such a serve 🔥

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🌈 SEE ALSO 🌈

the whole extended friend group 💖 — go read these next, iykyk:

• Kernel file ./include/linux/usb/gadget.h
• struct usb_request(9)
• struct usb_ep_caps(9)
• struct usb_ep(9)
• struct usb_gadget(9)
• usb_ep_align(9)
• usb_ep_align_maybe(9)
• gadget_is_altset_supported(9)
• gadget_is_stall_supported(9)
• gadget_is_zlp_supported(9)
• gadget_avoids_skb_reserve(9)
• gadget_is_dualspeed(9)
• gadget_is_superspeed(9)
• gadget_is_superspeed_plus(9)
• gadget_is_otg(9)
• struct usb_gadget_driver(9)
• usb_gadget_register_driver_owner(9)
• usb_gadget_unregister_driver(9)
• struct usb_string(9)
• struct usb_gadget_strings(9)
• usb_free_descriptors(9)

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and that's the page!! 💖✨🎀🦋🌸💅🫶

shoutout to the source file ./include/linux/usb, dated October 2026 — mwah, thanks for the lore, love u, bye bestie 👑💜