Отправлено xc164 07 февраля 2004 г. 19:53 В ответ на: на всякий случай... отправлено xc164 07 февраля 2004 г. 19:46

void prn_bulk_cbf( struct usbd_urb *urb, struct usbd_pipe *pipe, void *hdl )
{
	pipe = pipe, hdl = hdl;
	pthread_sleepon_lock( );
	pthread_sleepon_signal( urb );
	pthread_sleepon_unlock( );
	return;
}
int prn_bulk_wait( prn_t *prn, struct usbd_urb *urb, struct usbd_pipe *pipe )
{
	_uint32		ustatus;
	_uint32		alen;
	pthread_sleepon_lock( );
	while( usbd_urb_status( urb, &ustatus, &alen ) == EBUSY &&
				!( prn->status & PRN_UNBLOCK ) ) {
		pthread_sleepon_wait( urb );
	}
	pthread_sleepon_unlock( );
	// check for a stall condition and clear it
	if( ( ustatus & USBD_USB_STATUS_MASK ) == USBD_STATUS_STALL ) {
		usbd_reset_pipe( pipe );
	}
	if( prn->status & PRN_UNBLOCK ) {
		return( EINTR );
	}
	return( ( ustatus & USBD_URB_STATUS_MASK ) == USBD_STATUS_CMP ? EOK : EIO );
}
int prn_io( prn_t *prn, struct usbd_pipe *pipe, _uint32 flags, _uint8 *buffer, _uint32 length )
{
	_uint32		status;
	usbd_setup_bulk( prn->urb, flags, buffer, length );
	usbd_setup_control(prn->urb, flags, 0, 0, 0, 0, buffer, length ); 
	if( ( status = usbd_io( prn->urb, pipe, prn_bulk_cbf, prn, USBD_TIME_INFINITY ) ) == EOK ) {
		return( prn_bulk_wait( prn, prn->urb, pipe ) );
	}
	return( status );
}