int usb_ep_dequeue (struct usb_ep * ep, struct usb_request * req);
if the request is still active on the endpoint, it is dequeued and its completion routine is called (with status -ECONNRESET); else a negative error code is returned.
note that some hardware can't clear out write fifos (to unlink the request at the head of the queue) except as part of disconnecting from usb. such restrictions prevent drivers from supporting configuration changes, even to configuration zero (a ``chapter 9'' requirement).
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.
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.
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
For more details see the file COPYING in the source distribution of Linux.
If you have comments on the formatting of this manpage, then please contact Michael Still (mikal@stillhq.com).
This documentation was generated with kernel version 2.6.0.