STRUCT USB_CLASS_DRIVER(9)

💖 struct usb_class_driver(9) 💖

okay so welcome to the Kernel API Manual, bestie ✨ this page is all about struct usb_class_driver — the struct that identifies a USB driver that wants to use the USB major number. periodt. 💅

🌸 NAME 🌸

struct usb_class_driver — identifies a USB driver that wants to use the USB major number. no cap, that’s the whole vibe. 🫶

🎀 SYNOPSIS 🎀

struct usb_class_driver {
    char *name;
    char *(*devnode)(const struct device *dev, umode_t *mode);
    const struct file_operations *fops;
    int minor_base;
};

🫶 Members 🫶

• name — the usb class device name for this driver. it will show up in sysfs, bestie, so it’s literally visible. 👀✨
• devnode — callback to provide a naming hint for a possible device node to create. it’s giving “here’s a lil hint” energy. 🧚
• fops — pointer to the struct file_operations of this driver. iconic pointer behavior. 💫
• minor_base — the start of the minor range for this driver. that’s where the minors begin, fr fr. 🎀

🦋 Description 🦋

This structure is used for the usb_register_dev and usb_deregister_dev functions — it’s there to consolidate a number of the parameters used for them. lowkey just doing its main character job of bundling things together. 💖

🌈 SEE ALSO 🌈

Kernel file ./include/linux/usb.h, plus all these besties:

• struct usb_host_endpoint(9)
• struct usb_interface(9)
• usb_set_intfdata(9)
• struct usb_interface_cache(9)
• struct usb_host_config(9)
• struct usb_device(9)
• usb_hub_for_each_child(9)
• usb_interface_claimed(9)
• usb_make_path(9)
• USB_DEVICE(9)
• USB_DEVICE_VER(9)
• USB_DEVICE_INTERFACE_CLASS(9)
• USB_DEVICE_INTERFACE_PROTOCOL(9)
• USB_DEVICE_INTERFACE_NUMBER(9)
• USB_DEVICE_INFO(9)
• USB_INTERFACE_INFO(9)
• USB_DEVICE_AND_INTERFACE_INFO(9)
• USB_VENDOR_AND_INTERFACE_INFO(9)
• struct usb_driver(9)
• struct usb_device_driver(9)
• module_usb_driver(9)
• struct urb(9)
• usb_fill_control_urb(9)
• usb_fill_bulk_urb(9)
• usb_fill_int_urb(9)
• usb_urb_dir_in(9)
• usb_urb_dir_out(9)
• struct usb_sg_request(9)

mwah 💋 this page lives in ./include/linux and is dated October 2026 — that’s the source/version tea, bestie, bye! 🎀✨