usb_gadget_frame_number(9)

🌸 NAME 🌸

Okay so bestie, this is the usb_gadget_frame_number(9) page from the Kernel API Manual, and it's giving extremely specific kernel energy. 💅 Its whole job? returns the current frame number. That's it. Iconic, focused, no cap. ✨

🎀 SYNOPSIS 🎀

Here's the exact signature, don't come for me:

int usb_gadget_frame_number (struct usb_gadget *gadget );

💖 ARGUMENTS 💖

• gadget — the controller that reports the frame number. It's literally the main character reporting the frame-number vibe check. 🫶

🦋 DESCRIPTION 🦋

So the function returns the usb frame number, which is normally eleven bits from a SOF packet. Periodt. ✨

If this device doesn't support this capability, you get a negative errno instead. Not the slay we wanted, but that's the rule. 😭

🌈 SEE ALSO 🌈

Lowkey a whole friend group of kernel references. Here's the full guest list, literally no skips:

• Kernel file ./drivers/usb/gadget/udc/core.c
• struct usb_udc(9)
• usb_ep_set_maxpacket_limit(9)
• usb_ep_enable(9)
• usb_ep_disable(9)
• usb_ep_alloc_request(9)
• usb_ep_free_request(9)
• usb_ep_queue(9)
• usb_ep_dequeue(9)
• usb_ep_set_halt(9)
• usb_ep_clear_halt(9)
• usb_ep_set_wedge(9)
• usb_ep_fifo_status(9)
• usb_ep_fifo_flush(9)
• usb_gadget_wakeup(9)
• usb_gadget_set_remote_wakeup(9)
• usb_gadget_set_selfpowered(9)
• usb_gadget_clear_selfpowered(9)
• usb_gadget_vbus_connect(9)
• usb_gadget_vbus_draw(9)
• usb_gadget_vbus_disconnect(9)
• usb_gadget_connect(9)
• usb_gadget_disconnect(9)
• usb_gadget_deactivate(9)
• usb_gadget_activate(9)
• usb_gadget_giveback_request(9)
• gadget_find_ep_by_name(9)
• usb_gadget_check_config(9)
• usb_udc_vbus_handler(9)
• usb_gadget_udc_reset(9)
• usb_gadget_udc_start_locked(9)
• usb_gadget_udc_stop_locked(9)
• usb_gadget_udc_set_speed(9)
• usb_gadget_enable_async_callbacks(9)
• usb_gadget_disable_async_callbacks(9)
• usb_udc_release(9)
• usb_initialize_gadget(9)
• usb_add_gadget(9)
• usb_add_gadget_udc_release(9)
• usb_get_gadget_udc_name(9)
• usb_add_gadget_udc(9)
• usb_del_gadget(9)
• usb_del_gadget_udc(9)

mwah 💋 — source/version: ./drivers/usb/gadget/udc, date: October 2026, page: usb_gadget_frame_number(9). Bye bestie, go slay that kernel! 🌈👑