usb_string_id9
Allocate an unused string id
Usage
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
Overview
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.
Releases
4 releases since Debian 6.0 (Squeeze); the text changed 3 times.