USB_HUB_FIND_CHILD(9)                     USB Core APIs                     USB_HUB_FIND_CHILD(9)



NAME
       usb_hub_find_child - Get the pointer of child device attached to the port which is
       specified by port1.

SYNOPSIS
       struct usb_device * usb_hub_find_child(struct usb_device * hdev, int port1);

ARGUMENTS
       hdev
           USB device belonging to the usb hub

       port1
           port num to indicate which port the child device is attached to.

DESCRIPTION
       USB drivers call this function to get hub's child device pointer.

RETURN
       NULL if input param is invalid and child's usb_device pointer if non-NULL.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                     USB_HUB_FIND_CHILD(9)