dwc3_gadget_giveback(9)

💅 dwc3_gadget_giveback — bestie, let me tell you about this function 💅

Okay so real talk, this is a kernel API manual page for dwc3_gadget_giveback(9). It's giving "low-level USB driver realness" and honestly? Iconic. Let me break it down for you, no cap. 🎀

---

✨ NAME ✨

dwc3_gadget_giveback — bestie, this calls the struct usb_request's ->complete callback. That's literally the whole vibe. 💖

---

🌸 SYNOPSIS 🌸

void dwc3_gadget_giveback (struct dwc3_ep *dep , struct dwc3_request
*req , int status );

Look at that signature. So clean. So structured. We love to see it. ✨

---

🦋 ARGUMENTS 🦋

• dep — the endpoint to whom the request belongs. Like, it's their request, okay? Respect the ownership, periodt. 👑
• req — the request we're giving back. It's the whole reason we're here, the main character of this function, fr fr. 🫶
• status — the completion code for the request. Basically it's telling you how it all went down. 💀

---

💜 DESCRIPTION 💜

Okay so here's the thing, and I need you to listen: this function must be called with the controller's lock held AND interrupts disabled. Like, do not come in here without the lock held, bestie, that is not the move. It's giving critical section energy and we respect it. 🔥

So what does it do? It will unmap req and then call its ->complete callback, which notifies the upper layers that the request has officially completed. It's like sending the "we're done here" text in the group chat, you know? The callback is how everyone else finds out the job is finished. Slay. 💅

Ngl, this is a kernel-level function so the lock and interrupt thing is not a suggestion — it's the whole vibe check. Don't skip it. 🙈

---

🌈 SEE ALSO 🌈

Bestie, this function has SO many friends, it's literally the most popular kid in ./drivers/usb/dwc3/gadget.c. Here's the whole squad: 👯‍♀️

• dwc3_gadget_set_test_mode(9)
• dwc3_gadget_get_link_state(9)
• dwc3_gadget_set_link_state(9)
• dwc3_ep_inc_trb(9)
• dwc3_ep_inc_enq(9)
• dwc3_ep_inc_deq(9)
• dwc3_send_gadget_generic_command(9)
• dwc3_send_gadget_ep_cmd(9)
• dwc3_gadget_start_config(9)
• dwc3_gadget_calc_tx_fifo_size(9)
• dwc3_gadget_calc_ram_depth(9)
• dwc3_gadget_clear_tx_fifos(9)
• __dwc3_gadget_ep_enable(9)
• __dwc3_gadget_ep_disable(9)
• dwc3_ep_prev_trb(9)
• dwc3_prepare_one_trb(9)
• dwc3_prepare_last_sg(9)
• __dwc3_stop_active_transfer(9)
• dwc3_gadget_start_isoc_quirk(9)
• dwc3_gadget_setup_nump(9)
• dwc3_gadget_check_config(9)
• dwc3_gadget_init(9)

They all live in the kernel file ./drivers/usb/dwc3/gadget.c and honestly? It's a whole community over there. Go say hi. 🫶

---

Okay that's the whole page, bestie. You understood the assignment. Now go hold that lock and disable those interrupts before you call this function, or I will find out. 💀✨

— signed off from ./drivers/usb/dwc3, dated October 2026, page dwc3_gadget_giveback(9) 💖