NAME
usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist
SYNOPSIS
void usb_buffer_unmap_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 unmap
n_hw_ents
the positive return value from usb_buffer_map_sg
DESCRIPTION
Reverses the effect of usb_buffer_map_sg.