usb_buffer_unmap_sg(9)
NAME
usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist
SYNOPSIS
void usb_buffer_unmap_sg(const struct usb_device * dev, int is_in,
struct scatterlist * sg, int n_hw_ents);
ARGUMENTS
- dev
- device to which the scatterlist will be mapped
- is_in
- mapping transfer 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.