pch_udc_pcd_dequeue(9)

💅 pch_udc_pcd_dequeue — a Kernel API Manual moment ✨

okay bestie, so this is a page straight out of the Kernel API Manual, and it's all about one lil' gadget-driver function. pull up a chair 🎀

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🌸 NAME 🌸

pch_udc_pcd_dequeue — so like, this function de-queues a request packet. that's the whole vibe. it gets called by the gadget driver, no cap 💅

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🦋 SYNOPSIS 🦋

int pch_udc_pcd_dequeue (struct usb_ep *usbep , struct usb_request *usbreq );

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🎀 ARGUMENTS 🎀

• usbep — a reference to the USB endpoint structure 👑
• usbreq — a reference to the USB request 🫶

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💖 DESCRIPTION 💖

here's the return-code tea, periodt:

• 0: Success ✨
• linux error number: Failure 💀

that's literally it. two outcomes, one iconique little return value, iykyk 🌈

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🌟 SEE ALSO 🌟

the kernel file we're living in: ./drivers/usb/gadget/udc/pch_udc.c 📁

the structs (struct girlies stand up):

• struct pch_udc_data_dma_desc(9)
• struct pch_udc_stp_dma_desc(9)
• struct pch_udc_cfg_data(9)
• struct pch_udc_ep(9)
• struct pch_vbus_gpio_data(9)
• struct pch_udc_dev(9)
• struct pch_udc_request(9)

and the whole friend group of functions, in order, no one left behind bestie:

• pch_udc_csr_busy(9), pch_udc_write_csr(9), pch_udc_read_csr(9), pch_udc_rmt_wakeup(9), pch_udc_get_frame(9), pch_udc_clear_selfpowered(9), pch_udc_set_selfpowered(9), pch_udc_set_disconnect(9), pch_udc_clear_disconnect(9), pch_udc_reconnect(9), pch_udc_vbus_session(9)
• pch_udc_ep_set_stall(9), pch_udc_ep_clear_stall(9), pch_udc_ep_set_trfr_type(9), pch_udc_ep_set_bufsz(9), pch_udc_ep_set_maxpkt(9), pch_udc_ep_set_subptr(9), pch_udc_ep_set_ddptr(9), pch_udc_ep_set_pd(9), pch_udc_ep_set_rrdy(9), pch_udc_ep_clear_rrdy(9), pch_udc_set_dma(9), pch_udc_clear_dma(9), pch_udc_set_csr_done(9)
• pch_udc_disable_interrupts(9), pch_udc_enable_interrupts(9), pch_udc_disable_ep_interrupts(9), pch_udc_enable_ep_interrupts(9), pch_udc_read_device_interrupts(9), pch_udc_write_device_interrupts(9), pch_udc_read_ep_interrupts(9), pch_udc_write_ep_interrupts(9), pch_udc_read_device_status(9)
• pch_udc_read_ep_control(9), pch_udc_clear_ep_control(9), pch_udc_read_ep_status(9), pch_udc_clear_ep_status(9), pch_udc_ep_set_nak(9), pch_udc_ep_clear_nak(9), pch_udc_ep_fifo_flush(9), pch_udc_ep_enable(9), pch_udc_ep_disable(9), pch_udc_wait_ep_stall(9), pch_udc_init(9), pch_udc_exit(9)
• pch_udc_pcd_get_frame(9), pch_udc_pcd_wakeup(9), pch_udc_pcd_selfpowered(9), pch_udc_pcd_pullup(9), pch_udc_pcd_vbus_session(9), pch_udc_pcd_vbus_draw(9)
• pch_vbus_gpio_get_value(9), pch_vbus_gpio_work_fall(9), pch_vbus_gpio_work_rise(9), pch_vbus_gpio_irq(9), pch_vbus_gpio_init(9), pch_vbus_gpio_free(9)
• complete_req(9), empty_req_queue(9), pch_udc_free_dma_chain(9), pch_udc_create_dma_chain(9), prepare_dma(9), process_zlp(9), pch_udc_start_rxrequest(9)
• pch_udc_pcd_ep_enable(9), pch_udc_pcd_ep_disable(9), pch_udc_alloc_request(9), pch_udc_free_request(9), pch_udc_pcd_queue(9), pch_udc_pcd_set_halt(9), pch_udc_pcd_set_wedge(9), pch_udc_pcd_fifo_flush(9)
• pch_udc_init_setup_buff(9), pch_udc_start_next_txrequest(9), pch_udc_complete_transfer(9), pch_udc_complete_receiver(9)
• pch_udc_svc_data_in(9), pch_udc_svc_data_out(9), pch_udc_svc_control_in(9), pch_udc_svc_control_out(9), pch_udc_postsvc_epinters(9), pch_udc_read_all_epstatus(9), pch_udc_activate_control_ep(9)
• pch_udc_svc_ur_interrupt(9), pch_udc_svc_enum_interrupt(9), pch_udc_svc_intf_interrupt(9), pch_udc_svc_cfg_interrupt(9), pch_udc_dev_isr(9), pch_udc_isr(9)
• pch_udc_setup_ep0(9), pch_udc_pcd_reinit(9), pch_udc_pcd_init(9), init_dma_pools(9)

literally the whole roster, ate and left no crumbs 💅🔥

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and that's the page bestie!! mwah 🫶 this lil' drop came from ./drivers/usb/gadget/udc, dated October 2026, and it's filed under pch_udc_pcd_dequeue(9) — iconic, no notes 💜🎀✨