USB_STRING_ID(9) Kernel Mode Gadget API USB_STRING_ID(9)NAME
usb_string_id - allocate an unused string ID
int usb_string_id(struct usb_composite_dev * cdev);
the device whose string descriptor IDs are being allocated
single threaded during gadget setup
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.
David Brownell <email@example.com>
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_STRING_ID(9)
Check Out this Related Man Page
USB_GSTRINGS_ATTACH(9) Kernel Mode Gadget API USB_GSTRINGS_ATTACH(9)NAME
usb_gstrings_attach - attach gadget strings to a cdev and assign ids
struct usb_string * usb_gstrings_attach(struct usb_composite_dev * cdev, struct usb_gadget_strings ** sp, unsigned n_strings);
the device whose string descriptor IDs are being allocated and attached.
an array of usb_gadget_strings to attach.
number of entries in each usb_strings array (sp->strings)
This function will create a deep copy of usb_gadget_strings and usb_string and attach it to the cdev. The actual string (usb_string.s) will
not be copied but only a referenced will be made. The struct usb_gadget_strings array may contain multiple languges and should be NULL
terminated. The ->language pointer of each struct usb_gadget_strings has to contain the same amount of entries.
sp is en-US, sp is es-ES. It is expected that the first usb_string entry of es-ES containts the translation of the first usb_string
entry of en-US. Therefore both entries become the same id assign.
David Brownell <firstname.lastname@example.org>
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_GSTRINGS_ATTACH(9)
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