usb_deregister_dev(9)

usb_deregister_dev(9) — Kernel API Manual 💅

okay bestie, welcome to the kernel side of the group chat ✨ this one is short but important, so let’s get into it 🫶

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💖 NAME 💖

usb_deregister_dev — deregister a USB device's dynamic minor. no cap, that’s the whole vibe of this function 🎀

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✨ SYNOPSIS ✨

void usb_deregister_dev (struct usb_interface *intf , struct
       usb_class_driver *class_driver );

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🌸 ARGUMENTS 🌸

• intf — pointer to the usb_interface that is being deregistered 💅
• class_driver — pointer to the usb_class_driver for this device ✨

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🦋 DESCRIPTION 🦋

So this function is used in conjunction with usb_register_dev 👀 it gets called when the USB driver is finished with the minor numbers that came from a call to usb_register_dev — usually when the device is disconnected from the system 🫶

It also removes the usb class device from the sysfs tree 🌈 iconic cleanup behavior, honestly.

And listen: this should be called by all drivers that use the USB major number 💖 that part is not optional vibes, it’s the rule periodt.

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👑 SEE ALSO 👑

• Kernel file ./drivers/usb/core/file.c
• usb_register_dev(9)

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mwah 💖 this little page lives in ./drivers/usb/core, October 2026, and it’s all about usb_deregister_dev(9) — bye bestie, go deregister that dynamic minor responsibly 🎀✨