xhci_setup_device(9)

✨ NAME ✨

xhci_setup_device — bestie, this one issues an Address Device command to assign a unique USB bus address 💅

This page is from the Kernel API Manual, and it's giving very specific USB host controller energy.

🌸 SYNOPSIS 🌸

int xhci_setup_device (struct usb_hcd *hcd , struct usb_device *udev ,
enum xhci_setup_dev setup , unsigned int timeout_ms );

🎀 ARGUMENTS 🎀

• hcd — the USB host controller data structure. That's the host-controller bestie in this situation.
• udev — the USB dev structure representing the connected device. The actual device we're setting up, slay.
• setup — an enum xhci_setup_dev specifying the setup mode: address only or with context.
• timeout_ms — max wait time, in milliseconds, for the command operation to complete. Don't let it wait forever, okay? ⏳

💖 RETURN 💖

Returns 0 if successful; otherwise, a negative error code. No cap, that's the whole return vibe.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/usb/host/xhci.c
• xhci_get_endpoint_index(9)

okay that's the whole page, bestie — every flag, argument, return value, and reference is right there 🫶

mwah 💋 this lil page is from ./drivers/usb/host, October 2026, and yes it's xhci_setup_device(9) — iconic.