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.TH "USB_CTRLREQUEST" "9" "17 July 2003" "" ""

.SH NAME
struct usb_ctrlrequest \- SETUP data for a USB device control request
.SH SYNOPSIS

.nf
struct usb_ctrlrequest {
  __u8 bRequestType;
  __u8 bRequest;
  __u16 wValue;
  __u16 wIndex;
  __u16 wLength;
};  
.fi
.SH "MEMBERS"
.TP
\fBbRequestType\fR
matches the USB bmRequestType field
.TP
\fBbRequest\fR
matches the USB bRequest field
.TP
\fBwValue\fR
matches the USB wValue field (le16 byte order)
.TP
\fBwIndex\fR
matches the USB wIndex field (le16 byte order)
.TP
\fBwLength\fR
matches the USB wLength field (le16 byte order)
.SH "DESCRIPTION"
.PP
This structure is used to send control requests to a USB device.  It matches
the different fields of the USB 2.0 Spec section 9.3, table 9-2.  See the
USB spec for a fuller description of the different fields, and what they are
used for.
.PP
Note that the driver for any interface can issue control requests.
For most devices, interfaces don't coordinate with each other, so
such requests may be made at any time.
.SH "ABOUT THIS DOCUMENT"
.PP
Permission is granted to copy, distribute, and/or modify
this document under the terms of the GNU Free Documentation
License, version 1.2, or any later version published by the
Free Software Foundation; with the Invariant Sections being
the "GNU Free Documentation License",
no Front-Cover Texts,
and
no Back-Cover Texts.
.PP
This documentation is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Free Documentation License for more details.
.PP
Note that certain sections of this document are merged
into Linux kernel source code.
That content is the bulk of 
[XRef to CORE]> and
[XRef to UTILS]>,
where the "GNU Free Documentation License" is identified
as an alternate licence for its documentation.
.PP
If you have comments on the formatting of this manpage, then please contact
Michael Still (mikal@stillhq.com).
.PP
This documentation was generated with kernel version 2.5.71.