handle_ep(9)

💖 handle_ep(9) 💖

okay so bestie, welcome to the handle_ep(9) page from the Kernel API Manual. it's short, it's iconic, and it's doing real endpoint work, so let's get into it 💅

🌸 NAME 🌸

handle_ep — Handle endpoint data tranfers. (yes, "tranfers" is the original spelling and we are keeping it, it's part of the lore 💀)

✨ SYNOPSIS ✨

void handle_ep (struct pxa_ep *ep );

🎀 ARGUMENTS 🎀

• ep — the pxa physical endpoint. that's the endpoint you're handling, your main character for this function 🫶

🦋 DESCRIPTION 🦋

okay so handle_ep tries to transfer all pending request data into the endpoint and/or transfer all pending data in the endpoint into usb requests. it's giving "move the pending stuff both ways" and honestly? we love that for it ✨

this is always called from the interrupt handler. periodt.

🚨 do not hold ep->lock when you call this. the manual says ep->lock must not be held, and we respect the lock rules in this house 💅

👑 SEE ALSO 👑

if you want the whole friend group, it's all here, no omissions, fr fr: Kernel file ./drivers/usb/gadget/udc/pxa27x_udc.c — 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), 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), 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).

mwah 💋 this page lives under ./drivers/usb/gadget/udc and it's stamped October 2026. go handle those endpoints, bestie — no cap, you've got this 🫶🌈