usb_gadget_get_string man page on Scientific

usb_gadget_get_string man page on Scientific

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USB_GADGET_GET_STRIN(9)	    Kernel Mode Gadget API     USB_GADGET_GET_STRIN(9)

NAME
       usb_gadget_get_string - fill out a string descriptor

SYNOPSIS
       int usb_gadget_get_string(struct usb_gadget_strings * table, int id,
				 u8 * buf);

ARGUMENTS
       table
	   of c strings encoded using UTF-8

       id
	   string id, from low byte of wValue in get string descriptor

       buf
	   at least 256 bytes

DESCRIPTION
       Finds the UTF-8 string matching the ID, and converts it into a string
       descriptor in utf16-le. Returns length of descriptor (always even) or
       negative errno

       If your driver needs stings in multiple languages, you´ll probably
       “switch (wIndex) { ... }” in your ep0 string descriptor logic, using
       this routine after choosing which set of UTF-8 strings to use. Note
       that US-ASCII is a strict subset of UTF-8; any string bytes with the
       eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
       characters (which are also widely used in C strings).

AUTHOR
       David Brownell <dbrownell@users.sourceforge.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013	       USB_GADGET_GET_STRIN(9)

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