dwc2_deschedule_periodic(9)

✨ NAME ✨

dwc2_deschedule_periodic — okay so this one removes an interrupt or isochronous transfer from the periodic schedule. That’s literally the whole job, bestie: deschedule the periodic transfer. 💅

🌸 SYNOPSIS 🌸

void dwc2_deschedule_periodic (struct dwc2_hsotg *hsotg , struct dwc2_qh *qh );

It’s void, so no return value is coming back to you — it’s giving “do the thing and dip.” 💨

🎀 ARGUMENTS 🎀

• hsotg — the HCD state structure for the DWC OTG controller. Like, the controller’s whole state situation. 👑
• qh — the QH for the periodic transfer. That’s the queue head for the periodic transfer you’re descheduling. 🦋

💖 SEE ALSO 💖

Kernel file ./drivers/usb/dwc2/hcd_queue.c — yes bestie, that’s the spot. 📂

The whole friend group of related calls:

• dwc2_periodic_channel_available(9)
• dwc2_check_periodic_bandwidth(9)
• pmap_schedule(9)
• pmap_unschedule(9)
• dwc2_get_ls_map(9)
• dwc2_qh_print(9)
• dwc2_qh_schedule_print(9)
• dwc2_ls_pmap_schedule(9)
• dwc2_ls_pmap_unschedule(9)
• dwc2_hs_pmap_schedule(9)
• dwc2_hs_pmap_unschedule(9)
• dwc2_uframe_schedule_split(9)
• dwc2_uframe_schedule_hs(9)
• dwc2_uframe_schedule_ls(9)
• dwc2_uframe_schedule(9)
• dwc2_uframe_unschedule(9)
• dwc2_pick_first_frame(9)
• dwc2_do_reserve(9)
• dwc2_do_unreserve(9)
• dwc2_unreserve_timer_fn(9)
• dwc2_check_max_xfer_size(9)
• dwc2_schedule_periodic(9)
• dwc2_wait_timer_fn(9)
• dwc2_qh_init(9)
• dwc2_hcd_qh_create(9)
• dwc2_hcd_qh_free(9)
• dwc2_hcd_qh_add(9)
• dwc2_hcd_qh_unlink(9)
• dwc2_next_for_periodic_split(9)
• dwc2_next_periodic_start(9)
• dwc2_hcd_qtd_init(9)
• dwc2_hcd_qtd_add(9)

xoxo 💖 — signed off from ./drivers/usb/dwc2, dated October 2026, on the dwc2_deschedule_periodic(9) page.