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NAME

       usb_buffer_dmasync_sg  -  synchronize  DMA  and CPU view of scatterlist
       buffer(s)

SYNOPSIS

       void usb_buffer_dmasync_sg  (struct usb_device * dev, unsigned pipe,
                                     struct scatterlist * sg, int n_hw_ents);

ARGUMENTS

       dev    device to which the scatterlist will be mapped

       pipe   endpoint defining the mapping direction

       sg     the scatterlist to synchronize

       n_hw_ents
              the positive return value from usb_buffer_map_sg

DESCRIPTION

       Use this when you are re-using a scatterlist’s data buffers for another
       USB request.