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.TH "USB_ALLOC_URB" "9" "17 July 2003" "" ""

.SH NAME
usb_alloc_urb \- creates a new urb for a USB driver to use
.SH SYNOPSIS
.sp
\fB
.sp
struct urb * usb_alloc_urb  (int \fIiso_packets\fB, int \fImem_flags\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIiso_packets\fB\fR
number of iso packets for this urb
.TP
\fB\fImem_flags\fB\fR
the type of memory to allocate, see \fBkmalloc\fR for a list of
valid options for this.
.SH "DESCRIPTION"
.PP
Creates an urb for the USB driver to use, initializes a few internal
structures, incrementes the usage counter, and returns a pointer to it.
.PP
If no memory is available, NULL is returned.
.PP
If the driver want to use this urb for interrupt, control, or bulk
endpoints, pass '0' as the number of iso packets.
.PP
The driver must call \fBusb_free_urb\fR when it is finished with the urb.
.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 2.5.73.