update_pxa_ep_matches(9)

💅 update_pxa_ep_matches(9)

okay bestie, welcome to the Kernel API Manual ✨ — yes, the actual Kernel API Manual, we're in the big leagues now. this one's about update_pxa_ep_matches, and it's short but lowkey important, so let's get into it 🫶

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🌸 NAME

update_pxa_ep_matches — updates the cached pxa_ep values inside all the udc_usb_eps, no cap 💖

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✨ SYNOPSIS

void update_pxa_ep_matches (struct pxa_udc *udc );

that's it. one argument. one function. very demure, very mindful 🎀

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🦋 ARGUMENTS

• udc — the pxa udc. that's the whole deal, she's your context object and you hand her over 💅

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💀 CONTEXT

interrupt handler ⚡

like, you're in interrupt context. be normal about it, don't go blocking on stuff. iykyk.

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👑 DESCRIPTION

so here's the vibe: this function updates all the pxa_ep fields inside the udc_usb_ep structures — but only if that field was previously set up and is not NULL. no field, no touch. we respect boundaries in this house 🙈

and the update is literally necessary when a configuration change or an altsetting change was issued by the USB host. host said "new config bestie" and now everything cached is a little stale, so we refresh it. periodt. 🔥

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🌈 SEE ALSO

okay this list is long and honestly iconic, she knows everybody. friends of update_pxa_ep_matches, in the order the manpage says so 💜 — and yes, they all live in the kernel file ./drivers/usb/gadget/udc/pxa27x_udc.c:

• is_match_usb_pxa(9)
• find_pxa_ep(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)
• nuke(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)

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and that's the whole page, bestie 🧚💖 this lil beauty ships from ./drivers/usb/gadget/udc and it's stamped October 2026 — go forth, refresh those cached pxa_ep fields, and slay 💅👑