xudc_start(9)

💖 xudc_start(9) 💖

hiii bestie 🫶 welcome to the Kernel API Manual page for xudc_start(9) — the function that literally starts the device. This is your no-cap, every-detail-included era, so let’s get into it 🎀

---

✨ NAME ✨

xudc_start — starts the device. That’s the whole assignment, and it ate 💅

---

🌸 SYNOPSIS 🌸

okay so here’s the exact signature — do not touch the punctuation, iykyk:

int xudc_start (struct usb_gadget *gadget , struct usb_gadget_driver
       *driver );

---

🦋 ARGUMENTS 🦋

• gadget — pointer to the usb gadget structure. It’s giving “the gadget in question” ✨
• driver — pointer to gadget driver structure. The driver bestie, specifically 🎀

---

⭐ RETURN ⭐

zero on success and error on failure. That’s it, that’s the vibe check 😭

---

🌈 SEE ALSO 🌈

Kernel file ./drivers/usb/gadget/udc/udc-xilinx.c, plus the whole iconic friend group: struct xusb_req(9), struct xusb_ep(9), struct xusb_udc(9), xudc_write32(9), xudc_read32(9), xudc_write32_be(9), xudc_read32_be(9), xudc_wrstatus(9), xudc_epconfig(9), xudc_start_dma(9), xudc_dma_send(9), xudc_dma_receive(9), xudc_eptxrx(9), xudc_done(9), xudc_read_fifo(9), xudc_write_fifo(9), xudc_nuke(9), xudc_ep_set_halt(9), __xudc_ep_enable(9), xudc_ep_enable(9), xudc_ep_disable(9), xudc_ep_alloc_request(9), xudc_free_request(9), __xudc_ep0_queue(9), xudc_ep0_queue(9), xudc_ep_queue(9), xudc_ep_dequeue(9), xudc_ep0_enable(9), xudc_ep0_disable(9), xudc_get_frame(9), xudc_wakeup(9), xudc_pullup(9), xudc_eps_init(9), xudc_stop_activity(9), xudc_stop(9), xudc_clear_stall_all_ep(9), xudc_startup_handler(9), xudc_ep0_stall(9), xudc_setaddress(9), xudc_getstatus(9), xudc_set_clear_feature(9), xudc_handle_setup(9), xudc_ep0_out(9), xudc_ep0_in(9), xudc_ctrl_ep_handler(9), xudc_nonctrl_ep_handler(9), xudc_irq(9), xudc_probe(9), xudc_remove(9) 💜

---

and that’s the page, bestie 🍓 signed off from ./drivers/usb/gadget/udc, dated October 2026, and it’s literally xudc_start(9) — periodt 🫶✨