nuke(9)

💥 nuke(9) — the pxa27x_udc glow-up page 💥

okay bestie, welcome to nuke(9), a page straight out of the Kernel API Manual. Yes it's called nuke and no, it does not blow anything up — it's just dramatically thorough about cleaning up. main character energy fr fr 💅

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✨ NAME ✨

nuke — literally "Dequeue all requests". that's it, that's the whole vibe.

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🎀 SYNOPSIS 🎀

void nuke (struct pxa_ep *ep , int status );

look at that signature. so clean. so iconic. ✨

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🦋 ARGUMENTS 🦋

• ep — the pxa endpoint. your little usb buddy. 🫶
• status — the usb request status. the vibes report, basically.

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🌸 CONTEXT 🌸

heads up bestie, this is the context you gotta be in: ep->lock released. like, the lock is off, it's not held when you call this. not me forgetting that and causing a deadlock 😭 please don't be that person.

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💜 DESCRIPTION 💜

so what does it do? it dequeues all requests on an endpoint. every single one. gone. cleared. the timeline is reset. 🔥

and as a side effect — and this is the part i need you to remember — interrupts will be disabled on that endpoint (because no more requests — like, an empty queue has nothing to interrupt about, right? makes sense, slay).

ngl this is the whole function. it's short. it's efficient. it ate and left no crumbs. 👑

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🌈 SEE ALSO 🌈

okay this is the part where the page just goes OFF. like a whole friend group of kernel functions, all in Kernel file ./drivers/usb/gadget/udc/pxa27x_udc.c. here's the full squad, nobody left behind, i don't make the rules:

• is_match_usb_pxa(9)
• find_pxa_ep(9)
• update_pxa_ep_matches(9)
• pio_irq_enable(9)
• pio_irq_disable(9)
• udc_set_mask_UDCCR(9)
• udc_clear_mask_UDCCR(9)
• ep_write_UDCCSR(9)
• ep_count_bytes_remain(9)
• ep_is_empty(9)
• ep_is_full(9)
• epout_has_pkt(9)
• set_ep0state(9)
• ep0_idle(9)
• inc_ep_stats_reqs(9)
• inc_ep_stats_bytes(9)
• pxa_ep_setup(9)
• pxa_eps_setup(9)
• pxa_ep_alloc_request(9)
• pxa_ep_free_request(9)
• ep_add_request(9)
• ep_del_request(9)
• req_done(9)
• ep_end_out_req(9)
• ep0_end_out_req(9)
• ep_end_in_req(9)
• ep0_end_in_req(9)
• read_packet(9)
• write_packet(9)
• read_fifo(9)
• write_fifo(9)
• read_ep0_fifo(9)
• write_ep0_fifo(9)
• pxa_ep_queue(9)
• pxa_ep_dequeue(9)
• pxa_ep_set_halt(9)
• pxa_ep_fifo_status(9)
• pxa_ep_fifo_flush(9)
• pxa_ep_enable(9)
• pxa_ep_disable(9)
• dplus_pullup(9)
• pxa_udc_get_frame(9)
• pxa_udc_wakeup(9)
• should_enable_udc(9)
• should_disable_udc(9)
• pxa_udc_pullup(9)
• pxa_udc_vbus_session(9)
• pxa_udc_vbus_draw(9)
• pxa_udc_phy_event(9)
• udc_disable(9)
• udc_init_data(9)
• udc_enable(9)
• pxa27x_udc_start(9)
• stop_activity(9)
• pxa27x_udc_stop(9)
• handle_ep0_ctrl_req(9)
• handle_ep0(9)
• handle_ep(9)
• pxa27x_change_configuration(9)
• pxa27x_change_interface(9)
• irq_udc_suspend(9)
• irq_udc_resume(9)
• irq_udc_reconfig(9)
• irq_udc_reset(9)
• pxa_udc_irq(9)
• pxa_udc_probe(9)
• pxa_udc_remove(9)
• pxa_udc_suspend(9)
• pxa_udc_resume(9)

iykyk — that's the whole pxa27x_udc.c ensemble cast and honestly they all ate. 💅

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and that's the page bestie!! this iconic little number lives in ./drivers/usb/gadget/udc, dated October 2026, and it's filed under nuke(9) — go forth and dequeue responsibly 🧚‍♀️💖✨