STRUCT CDNS2_REQUEST(9)

💅 struct cdns2_request(9) — Kernel API Manual, bestie edition 🎀

Okay so this is the page for struct cdns2_request from the Kernel API Manual, and it is literally the extended device-side glow-up of a usb_request object. No cap. Let's get into it ✨

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🌸 NAME 🌸

struct cdns2_request — the extended device side representation of the usb_request object. It's giving "main character with extra lore," iykyk 💖

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✨ SYNOPSIS ✨

struct cdns2_request {
    struct usb_request request;
    struct cdns2_endpoint *pep;
    struct cdns2_trb *trb;
    int start_trb;
    int end_trb;
    struct list_head list;
    int finished_trb;
    int num_of_trb;
 };

Copy it exactly like that, bestie, don't freestyle the syntax 🙈

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🦋 Members 🦋

Here's the whole cast, member by member — every single one, we are not skipping anybody 👑

• request — the generic usb_request object that describes a single I/O request. The blueprint, the moment 💅
• pep — the extended representation of the usb_ep object. Glow-up era ✨
• trb — the first TRB association with this request. First in line, main character energy 🫶
• start_trb — the number of the first TRB in the transfer ring. Where the journey begins 🌸
• end_trb — the number of the last TRB in the transfer ring. Where it wraps up, bye bestie 😭
• list — used for queuing the request in lists. It's the group chat, basically 🎀
• finished_trb — the number of trb has already finished per request. The ones that ate and left no crumbs 🔥
• num_of_trb — how many trbs are associated with the request. The whole headcount, fr fr 💜

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🌈 SEE ALSO 🌈

All the other icons in this little kernel family — go say hi, they're all in the Kernel file ./drivers/usb/gadget/udc/cdns2/cdns2-gadget.h 📁:

• struct cdns2_ep0_regs(9)
• struct cdns2_epx_base(9)
• struct cdns2_epx_regs(9)
• struct cdns2_interrupt_regs(9)
• struct cdns2_usb_regs(9)
• struct cdns2_adma_regs(9)
• struct cdns2_trb(9)
• struct cdns2_ring(9)
• struct cdns2_endpoint(9)
• struct cdns2_device(9)

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Lowkey a whole squad. Read the whole squad. Do it for the plot 🧚

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That's the page, bestie — served fresh from ./drivers/usb/gadget/udc/cdns2, dated October 2026, and yes it's still titled struct cdns2_request(9) because some things never change 💖 slay ✨