USB_DESCRIPTOR_FILLB(9)               Kernel Mode Gadget API              USB_DESCRIPTOR_FILLB(9)



NAME
       usb_descriptor_fillbuf - fill buffer with descriptors

SYNOPSIS
       int usb_descriptor_fillbuf(void * buf, unsigned buflen,
                                  const struct usb_descriptor_header ** src);

ARGUMENTS
       buf
           Buffer to be filled

       buflen
           Size of buf

       src
           Array of descriptor pointers, terminated by null pointer.

DESCRIPTION
       Copies descriptors into the buffer, returning the length or a negative error code if they
       can't all be copied. Useful when assembling descriptors for an associated set of
       interfaces used as part of configuring a composite device; or in other cases where sets of
       descriptors need to be marshaled.

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

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