dwc2_period...el_available(9)

💖 dwc2_periodic_channel_available 💖

okay so bestie, welcome to the Kernel API Manual — this is the page for dwc2_periodic_channel_available(9) and it's honestly a little cutie. it does exactly one thing and it does it flawlessly. let's get into it 🎀

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✨ NAME ✨

dwc2_periodic_channel_available — the function that literally just checks whether a channel is available for a periodic transfer. that's it. that's the whole vibe check. 🦋

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🌸 SYNOPSIS 🌸

int dwc2_periodic_channel_available (struct dwc2_hsotg *hsotg );

one function, one argument, no drama. periodt. 💅

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🫶 ARGUMENTS 🫶

• hsotg — the HCD state structure for the DWC OTG controller. it's giving "main character" energy, like everything needs it, and yeah, this function needs it too 💜

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⭐ RETURN ⭐

• 0 — slay, successful, we love to see it 👑
• negative error code — not slay 😭 literally anything else means something went wrong

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🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/usb/dwc2/hcd_queue.c — that's the home base 🏠

and here's the whole friend group, no cap, every single one of them:

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_deschedule_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)

like i said. the whole group chat. 🙈

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ngl bestie, this one's short and sweet — check the channel, get a 0 or a negative error code, and go live your life 💖

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okay that's the page!! it lives in ./drivers/usb/dwc2, this version is from October 2026, and it's filed under dwc2_period...el_available(9) — mwah, love you, bye 🧚‍♀️🍓✨