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.TH "USB_GET_STATUS" "9" "17 July 2003" "" ""

.SH NAME
usb_get_status \- issues a GET_STATUS call
.SH SYNOPSIS
.sp
\fB
.sp
int usb_get_status  (struct usb_device * \fIdev\fB, int \fItype\fB, int \fItarget\fB, void * \fIdata\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIdev\fB\fR
the device whose status is being checked
.TP
\fB\fItype\fB\fR
USB_RECIP_*; for device, interface, or endpoint
.TP
\fB\fItarget\fB\fR
zero (for device), else interface or endpoint number
.TP
\fB\fIdata\fB\fR
pointer to two bytes of bitmap data
.SH "CONTEXT"
.PP
!in_interrupt ()
.SH "DESCRIPTION"
.PP
Returns device, interface, or endpoint status.  Normally only of
interest to see if the device is self powered, or has enabled the
remote wakeup facility; or whether a bulk or interrupt endpoint
is halted (``stalled'').
.PP
Bits in these status bitmaps are set using the SET_FEATURE request,
and cleared using the CLEAR_FEATURE request.  The \fBusb_clear_halt\fR
function should be used to clear halt (``stall'') status.
.PP
This call is synchronous, and may not be used in an interrupt context.
.PP
Returns the number of bytes received on success, or else the status code
returned by the underlying \fBusb_control_msg\fR call.
.SH "ABOUT THIS DOCUMENT"
.PP
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
.PP
This program 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 General Public License for more details.
.PP
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
.PP
For more details see the file COPYING in the source
distribution of Linux.
.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 2.5.72.