USB_STRING_ID(9)                      Kernel Mode Gadget API                     USB_STRING_ID(9)



NAME
       usb_string_id - allocate an unused string ID

SYNOPSIS
       int usb_string_id(struct usb_composite_dev * cdev);

ARGUMENTS
       cdev
           the device whose string descriptor IDs are being allocated

CONTEXT
       single threaded during gadget setup

DESCRIPTION
       usb_string_id() is called from bind callbacks to allocate string IDs. Drivers for
       functions, configurations, or gadgets will then store that ID in the appropriate
       descriptors and string table.

       All string identifier should be allocated using this, usb_string_ids_tab() or
       usb_string_ids_n() routine, to ensure that for example different functions don't wrongly
       assign different meanings to the same identifier.

AUTHOR
       David Brownell <dbrownell AT users.net>
           Author.

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