'\" t
.\"     Title: usb_buffer_unmap_sg
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: USB Core APIs
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "USB_BUFFER_UNMAP_SG" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "USB Core APIs"
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.SH "NAME"
usb_buffer_unmap_sg \- free DMA mapping(s) for a scatterlist
.SH "SYNOPSIS"
.HP \w'void\ usb_buffer_unmap_sg('u
.BI "void usb_buffer_unmap_sg(const\ struct\ usb_device\ *\ " "dev" ", int\ " "is_in" ", struct\ scatterlist\ *\ " "sg" ", int\ " "n_hw_ents" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
device to which the scatterlist will be mapped
.RE
.PP
\fIis_in\fR
.RS 4
mapping transfer direction
.RE
.PP
\fIsg\fR
.RS 4
the scatterlist to unmap
.RE
.PP
\fIn_hw_ents\fR
.RS 4
the positive return value from usb_buffer_map_sg
.RE
.SH "DESCRIPTION"
.PP
Reverses the effect of
\fBusb_buffer_map_sg\fR\&.
.SH "COPYRIGHT"
.br