usb_disable_device(9)

📦 version 7.3.1, in nixpkgs unstable

💅 usb_disable_device — from the Kernel API Manual, bestie

Okay so picture this: it's giving kernel-internals, it's giving USB, and it's literally called usb_disable_device. Let me put you on. ✨

🌸 NAME 🌸

usb_disable_device — turns off every single endpoint on a USB device, all of them, at once, no survivors 🎀

✨ SYNOPSIS ✨

void usb_disable_device (struct usb_device *dev , int skip_ep0 );

That's the whole signature, she's lowkey simple like that. 🦋

💜 ARGUMENTS 💜

  • dev — the device whose endpoints are being disabled. Your main character, the device in question. 🫶
  • skip_ep0 — the vibes check on endpoint 0: pass 0 to disable endpoint 0, or 1 to skip it. That's it, that's the whole decision. 👑

🔥 DESCRIPTION 🔥

So what she does is disable all of the device's endpoints — and yes, "potentially including endpoint 0," so it's not a guarantee that ep0 gets a pass, iykyk. 😭

On the way down she also deallocates the hcd/hardware state for those endpoints — which nukes all or most pending urbs, so heads up, that's the dramatic part 💀 — plus the usbcore state for the interfaces. Which means, fr fr, usbcore must call usb_set_configuration before any interfaces could be used again. No shortcut, no vibes-based workaround. 🌈

Not me gently reminding you that this thing deallocates state and nukes pending urbs — so like, do not expect your in-flight urbs to survive. Periodt. 💅

🦋 SEE ALSO 🦋

Kernel file ./drivers/usb/core/message.c — and honestly the whole friend group, she's connected to everybody, look at this roster:

✨ mwah ✨ That's the page! Signing off from ./drivers/usb/core — dated October 2026, so she's fresh, she's current, she's iconic. Go disable some endpoints bestie, ily 💖🎀

📦 where this page comes from