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@users.sourceforge.net>
Author.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 USB_STRING_ID(9)
