USB_REGISTER_DEV - Online Linux Manual Page

Section : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : USB Core APIs
NAMEusb_register_dev − register a USB device, and ask for a minor number
SYNOPSISint usb_register_dev(struct usb_interface * intf, struct usb_class_driver * class_driver);
ARGUMENTSintf pointer to the usb_interface that is being registered class_driver pointer to the usb_class_driver for this device
DESCRIPTIONThis should be called by all USB drivers that use the USB major number​. If CONFIG_USB_DYNAMIC_MINORS is enabled, the minor number will be dynamically allocated out of the list of available ones​. If it is not enabled, the minor number will be based on the next available free minor, starting at the class_driver−>minor_base​. This function also creates a usb class device in the sysfs tree​. usb_deregister_dev must be called when the driver is done with the minor numbers given out by this function​. Returns −EINVAL if something bad happens with trying to register a device, and 0 on success​.
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