usb_buffer_unmap_sg
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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.

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