mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2024-11-06 01:56:25 +00:00
b849b20a8c
- Added a pre-compiled custom GN3S firmware. - Added a fully-compliant GNU Radio source block for GN3S USB dongle. It can be used also from GNU Radio companion and from Python applications. - Added a new GN3S_Signal_Source block. It is possible to disable the GN3S signal source compilation. See README. git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@217 64b25241-fba3-4117-9849-534c7e92360d
697 lines
16 KiB
C++
697 lines
16 KiB
C++
/* -*- c++ -*- */
|
||
/*
|
||
* Copyright 2003 Free Software Foundation, Inc.
|
||
*
|
||
* This file is part of GNU Radio
|
||
*
|
||
* GNU Radio 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 3, or (at your option)
|
||
* any later version.
|
||
*
|
||
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
|
||
* the Free Software Foundation, Inc., 51 Franklin Street,
|
||
* Boston, MA 02110-1301, USA.
|
||
*/
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
#include "config.h"
|
||
#endif
|
||
|
||
#include "fusb_linux.h"
|
||
#include "usb.h" // libusb header
|
||
#include <stdexcept>
|
||
#ifdef HAVE_LINUX_COMPILER_H
|
||
#include <linux/compiler.h>
|
||
#endif
|
||
#include <linux/usbdevice_fs.h> // interface to kernel portion of user mode usb driver
|
||
#include <sys/ioctl.h>
|
||
#include <assert.h>
|
||
#include <string.h>
|
||
#include <algorithm>
|
||
#include <errno.h>
|
||
#include <string.h>
|
||
#include <cstdio>
|
||
|
||
|
||
#define MINIMIZE_TX_BUFFERING 1 // must be defined to 0 or 1
|
||
|
||
|
||
//static const int MAX_BLOCK_SIZE = fusb_sysconfig::max_block_size(); // hard limit
|
||
//static const int DEFAULT_BLOCK_SIZE = MAX_BLOCK_SIZE;
|
||
static const int DEFAULT_BUFFER_SIZE = 4 * (1L << 20); // 4 MB / endpoint
|
||
|
||
static const int MAX_BLOCK_SIZE = 16 * 1024; // hard limit
|
||
static const int DEFAULT_BLOCK_SIZE = 4 * 1024; // fewer kernel memory problems
|
||
static const int FUSB_BUFFER_SIZE = 1 * (1L << 20); // 1MB
|
||
|
||
// Totally evil and fragile extraction of file descriptor from
|
||
// guts of libusb. They don't install usbi.h, which is what we'd need
|
||
// to do this nicely.
|
||
//
|
||
// FIXME if everything breaks someday in the future, look here...
|
||
|
||
static int
|
||
fd_from_usb_dev_handle (usb_dev_handle *udh)
|
||
{
|
||
return *((int *) udh);
|
||
}
|
||
|
||
inline static void
|
||
urb_set_ephandle (usbdevfs_urb *urb, fusb_ephandle_linux *handle)
|
||
{
|
||
urb->usercontext = handle;
|
||
}
|
||
|
||
inline static fusb_ephandle_linux *
|
||
urb_get_ephandle (usbdevfs_urb *urb)
|
||
{
|
||
return (fusb_ephandle_linux *) urb->usercontext;
|
||
}
|
||
|
||
// ------------------------------------------------------------------------
|
||
// USB request block (urb) allocation
|
||
// ------------------------------------------------------------------------
|
||
|
||
static usbdevfs_urb *
|
||
alloc_urb (fusb_ephandle_linux *self, int buffer_length, int endpoint,
|
||
bool input_p, unsigned char *write_buffer)
|
||
{
|
||
usbdevfs_urb *urb = new usbdevfs_urb;
|
||
memset (urb, 0, sizeof (*urb));
|
||
|
||
urb->buffer_length = buffer_length;
|
||
|
||
// We allocate dedicated memory only for input buffers.
|
||
// For output buffers we reuse the same buffer (the kernel
|
||
// copies the data at submital time)
|
||
|
||
if (input_p)
|
||
urb->buffer = new unsigned char [buffer_length];
|
||
else
|
||
urb->buffer = write_buffer;
|
||
|
||
// init common values
|
||
|
||
urb->type = USBDEVFS_URB_TYPE_BULK;
|
||
urb->endpoint = (endpoint & 0x7f) | (input_p ? 0x80 : 0);
|
||
|
||
// USBDEVFS_URB_QUEUE_BULK goes away in linux 2.5, but is needed if
|
||
// we are using a 2.4 usb-uhci host controller driver. This is
|
||
// unlikely since we're almost always going to be plugged into a
|
||
// high speed host controller (ehci)
|
||
#if 0 && defined (USBDEVFS_URB_QUEUE_BULK)
|
||
urb->flags = USBDEVFS_URB_QUEUE_BULK;
|
||
#endif
|
||
|
||
urb->signr = 0;
|
||
urb_set_ephandle (urb, self);
|
||
|
||
return urb;
|
||
}
|
||
|
||
static void
|
||
free_urb (usbdevfs_urb *urb)
|
||
{
|
||
// if this was an input urb, free the buffer
|
||
if (urb->endpoint & 0x80)
|
||
delete [] ((unsigned char *) urb->buffer);
|
||
|
||
delete urb;
|
||
}
|
||
|
||
// ------------------------------------------------------------------------
|
||
// device handle
|
||
// ------------------------------------------------------------------------
|
||
|
||
fusb_devhandle_linux::fusb_devhandle_linux (usb_dev_handle *udh)
|
||
: fusb_devhandle (udh)
|
||
{
|
||
// that's all
|
||
}
|
||
|
||
fusb_devhandle_linux::~fusb_devhandle_linux ()
|
||
{
|
||
// if there are any pending requests, cancel them and free the urbs.
|
||
|
||
std::list<usbdevfs_urb*>::reverse_iterator it;
|
||
|
||
for (it = d_pending_rqsts.rbegin (); it != d_pending_rqsts.rend (); it++){
|
||
_cancel_urb (*it);
|
||
free_urb (*it);
|
||
}
|
||
}
|
||
|
||
fusb_ephandle *
|
||
fusb_devhandle_linux::make_ephandle (int endpoint, bool input_p,
|
||
int block_size, int nblocks)
|
||
{
|
||
return new fusb_ephandle_linux (this, endpoint, input_p,
|
||
block_size, nblocks);
|
||
}
|
||
|
||
|
||
// Attempt to cancel all transactions associated with eph.
|
||
|
||
void
|
||
fusb_devhandle_linux::_cancel_pending_rqsts (fusb_ephandle_linux *eph)
|
||
{
|
||
std::list<usbdevfs_urb*>::reverse_iterator it;
|
||
|
||
for (it = d_pending_rqsts.rbegin (); it != d_pending_rqsts.rend (); it++){
|
||
if (urb_get_ephandle (*it) == eph)
|
||
_cancel_urb (*it);
|
||
}
|
||
}
|
||
|
||
void
|
||
fusb_devhandle_linux::pending_add (usbdevfs_urb *urb)
|
||
{
|
||
d_pending_rqsts.push_back (urb);
|
||
}
|
||
|
||
usbdevfs_urb *
|
||
fusb_devhandle_linux::pending_get ()
|
||
{
|
||
if (d_pending_rqsts.empty ())
|
||
return 0;
|
||
|
||
usbdevfs_urb *urb = d_pending_rqsts.front ();
|
||
d_pending_rqsts.pop_front ();
|
||
return urb;
|
||
}
|
||
|
||
bool
|
||
fusb_devhandle_linux::pending_remove (usbdevfs_urb *urb)
|
||
{
|
||
std::list<usbdevfs_urb*>::iterator result = find (d_pending_rqsts.begin (),
|
||
d_pending_rqsts.end (),
|
||
urb);
|
||
if (result == d_pending_rqsts.end ()){
|
||
fprintf (stderr, "fusb::pending_remove: failed to find urb in pending_rqsts: %p\n", urb);
|
||
return false;
|
||
}
|
||
d_pending_rqsts.erase (result);
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Submit the urb to the kernel.
|
||
* iff successful, the urb will be placed on the devhandle's pending list.
|
||
*/
|
||
bool
|
||
fusb_devhandle_linux::_submit_urb (usbdevfs_urb *urb)
|
||
{
|
||
int ret;
|
||
|
||
ret = ioctl (fd_from_usb_dev_handle (d_udh), USBDEVFS_SUBMITURB, urb);
|
||
if (ret < 0){
|
||
perror ("fusb::_submit_urb");
|
||
return false;
|
||
}
|
||
|
||
pending_add (urb);
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Attempt to cancel the in pending or in-progress urb transaction.
|
||
* Return true iff transaction was sucessfully cancelled.
|
||
*
|
||
* Failure to cancel should not be considered a problem. This frequently
|
||
* occurs if the transaction has already completed in the kernel but hasn't
|
||
* yet been reaped by the user mode code.
|
||
*
|
||
* urbs which were cancelled have their status field set to -ENOENT when
|
||
* they are reaped.
|
||
*/
|
||
bool
|
||
fusb_devhandle_linux::_cancel_urb (usbdevfs_urb *urb)
|
||
{
|
||
int ret = ioctl (fd_from_usb_dev_handle (d_udh), USBDEVFS_DISCARDURB, urb);
|
||
if (ret < 0){
|
||
// perror ("fusb::_cancel_urb");
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Check with the kernel and see if any of our outstanding requests
|
||
* have completed. For each completed transaction, remove it from the
|
||
* devhandle's pending list and append it to the completed list for
|
||
* the corresponding endpoint.
|
||
*
|
||
* If any transactions are reaped return true.
|
||
*
|
||
* If ok_to_block_p is true, then this will block until at least one
|
||
* transaction completes or an unrecoverable error occurs.
|
||
*/
|
||
bool
|
||
fusb_devhandle_linux::_reap (bool ok_to_block_p)
|
||
{
|
||
int ret;
|
||
int nreaped = 0;
|
||
usbdevfs_urb *urb = 0;
|
||
|
||
int fd = fd_from_usb_dev_handle (d_udh);
|
||
|
||
// try to reap as many as possible without blocking...
|
||
|
||
while ((ret = ioctl (fd, USBDEVFS_REAPURBNDELAY, &urb)) == 0){
|
||
if (urb->status != 0 && urb->status != -ENOENT){
|
||
fprintf (stderr, "_reap: usb->status = %d, actual_length = %5d\n",
|
||
urb->status, urb->actual_length);
|
||
}
|
||
pending_remove (urb);
|
||
urb_get_ephandle (urb)->completed_list_add (urb);
|
||
nreaped++;
|
||
}
|
||
|
||
if (nreaped > 0) // if we got any, return w/o blocking
|
||
return true;
|
||
|
||
if (!ok_to_block_p)
|
||
return false;
|
||
|
||
ret = ioctl (fd, USBDEVFS_REAPURB, &urb);
|
||
if (ret < 0){
|
||
perror ("fusb::_reap");
|
||
return false;
|
||
}
|
||
|
||
pending_remove (urb);
|
||
urb_get_ephandle (urb)->completed_list_add (urb);
|
||
return true;
|
||
}
|
||
|
||
void
|
||
fusb_devhandle_linux::_wait_for_completion ()
|
||
{
|
||
while (!d_pending_rqsts.empty ())
|
||
if (!_reap(true))
|
||
break;
|
||
}
|
||
// ------------------------------------------------------------------------
|
||
// end point handle
|
||
// ------------------------------------------------------------------------
|
||
|
||
fusb_ephandle_linux::fusb_ephandle_linux (fusb_devhandle_linux *devhandle,
|
||
int endpoint,
|
||
bool input_p,
|
||
int block_size, int nblocks)
|
||
: fusb_ephandle (endpoint, input_p, block_size, nblocks),
|
||
d_devhandle (devhandle),
|
||
d_write_work_in_progress (0), d_write_buffer (0),
|
||
d_read_work_in_progress (0), d_read_buffer (0), d_read_buffer_end (0)
|
||
{
|
||
|
||
if (d_block_size < 0 || d_block_size > MAX_BLOCK_SIZE)
|
||
throw std::out_of_range ("fusb_ephandle_linux: block_size");
|
||
|
||
if (d_nblocks < 0)
|
||
throw std::out_of_range ("fusb_ephandle_linux: nblocks");
|
||
|
||
if (d_block_size == 0)
|
||
d_block_size = DEFAULT_BLOCK_SIZE;
|
||
|
||
if (d_nblocks == 0)
|
||
d_nblocks = std::max (1, DEFAULT_BUFFER_SIZE / d_block_size);
|
||
|
||
if (!d_input_p)
|
||
if (!MINIMIZE_TX_BUFFERING)
|
||
d_write_buffer = new unsigned char [d_block_size];
|
||
|
||
if (0)
|
||
fprintf(stderr, "fusb_ephandle_linux::ctor: d_block_size = %d d_nblocks = %d\n",
|
||
d_block_size, d_nblocks);
|
||
|
||
// allocate urbs
|
||
|
||
for (int i = 0; i < d_nblocks; i++)
|
||
d_free_list.push_back (alloc_urb (this, d_block_size, d_endpoint,
|
||
d_input_p, d_write_buffer));
|
||
}
|
||
|
||
fusb_ephandle_linux::~fusb_ephandle_linux ()
|
||
{
|
||
stop ();
|
||
|
||
usbdevfs_urb *urb;
|
||
|
||
while ((urb = free_list_get ()) != 0)
|
||
free_urb (urb);
|
||
|
||
while ((urb = completed_list_get ()) != 0)
|
||
free_urb (urb);
|
||
|
||
if (d_write_work_in_progress)
|
||
free_urb (d_write_work_in_progress);
|
||
|
||
delete [] d_write_buffer;
|
||
|
||
if (d_read_work_in_progress)
|
||
free_urb (d_read_work_in_progress);
|
||
}
|
||
|
||
// ----------------------------------------------------------------
|
||
|
||
bool
|
||
fusb_ephandle_linux::start ()
|
||
{
|
||
if (d_started)
|
||
return true; // already running
|
||
|
||
d_started = true;
|
||
|
||
if (d_input_p){ // fire off all the reads
|
||
usbdevfs_urb *urb;
|
||
|
||
int nerrors = 0;
|
||
while ((urb = free_list_get ()) != 0 && nerrors < d_nblocks){
|
||
if (!submit_urb (urb))
|
||
nerrors++;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
//
|
||
// kill all i/o in progress.
|
||
// kill any completed but unprocessed transactions.
|
||
//
|
||
bool
|
||
fusb_ephandle_linux::stop ()
|
||
{
|
||
if (!d_started)
|
||
return true;
|
||
|
||
if (d_write_work_in_progress){
|
||
free_list_add (d_write_work_in_progress);
|
||
d_write_work_in_progress = 0;
|
||
}
|
||
|
||
if (d_read_work_in_progress){
|
||
free_list_add (d_read_work_in_progress);
|
||
d_read_work_in_progress = 0;
|
||
d_read_buffer = 0;
|
||
d_read_buffer_end = 0;
|
||
}
|
||
|
||
d_devhandle->_cancel_pending_rqsts (this);
|
||
d_devhandle->_reap (false);
|
||
|
||
while (1){
|
||
usbdevfs_urb *urb;
|
||
while ((urb = completed_list_get ()) != 0)
|
||
free_list_add (urb);
|
||
|
||
if (d_free_list.size () == (unsigned) d_nblocks)
|
||
break;
|
||
|
||
if (!d_devhandle->_reap(true))
|
||
break;
|
||
}
|
||
|
||
d_started = false;
|
||
return true;
|
||
}
|
||
|
||
// ----------------------------------------------------------------
|
||
// routines for writing
|
||
// ----------------------------------------------------------------
|
||
|
||
#if (MINIMIZE_TX_BUFFERING)
|
||
|
||
int
|
||
fusb_ephandle_linux::write(const void *buffer, int nbytes)
|
||
{
|
||
if (!d_started)
|
||
return -1;
|
||
|
||
if (d_input_p)
|
||
return -1;
|
||
|
||
assert(nbytes % 512 == 0);
|
||
|
||
unsigned char *src = (unsigned char *) buffer;
|
||
|
||
int n = 0;
|
||
while (n < nbytes){
|
||
|
||
usbdevfs_urb *urb = get_write_work_in_progress();
|
||
if (!urb)
|
||
return -1;
|
||
assert(urb->actual_length == 0);
|
||
int m = std::min(nbytes - n, MAX_BLOCK_SIZE);
|
||
urb->buffer = src;
|
||
urb->buffer_length = m;
|
||
|
||
n += m;
|
||
src += m;
|
||
|
||
if (!submit_urb(urb))
|
||
return -1;
|
||
|
||
d_write_work_in_progress = 0;
|
||
}
|
||
|
||
return n;
|
||
}
|
||
|
||
#else
|
||
|
||
int
|
||
fusb_ephandle_linux::write (const void *buffer, int nbytes)
|
||
{
|
||
if (!d_started)
|
||
return -1;
|
||
|
||
if (d_input_p)
|
||
return -1;
|
||
|
||
unsigned char *src = (unsigned char *) buffer;
|
||
|
||
int n = 0;
|
||
while (n < nbytes){
|
||
|
||
usbdevfs_urb *urb = get_write_work_in_progress ();
|
||
if (!urb)
|
||
return -1;
|
||
unsigned char *dst = (unsigned char *) urb->buffer;
|
||
int m = std::min (nbytes - n, urb->buffer_length - urb->actual_length);
|
||
|
||
memcpy (&dst[urb->actual_length], &src[n], m);
|
||
urb->actual_length += m;
|
||
n += m;
|
||
|
||
if (urb->actual_length == urb->buffer_length){
|
||
if (!submit_urb (urb))
|
||
return -1;
|
||
d_write_work_in_progress = 0;
|
||
}
|
||
}
|
||
|
||
return n;
|
||
}
|
||
|
||
#endif
|
||
|
||
usbdevfs_urb *
|
||
fusb_ephandle_linux::get_write_work_in_progress ()
|
||
{
|
||
// if we've already got some work in progress, return it
|
||
|
||
if (d_write_work_in_progress)
|
||
return d_write_work_in_progress;
|
||
|
||
while (1){
|
||
|
||
reap_complete_writes ();
|
||
|
||
usbdevfs_urb *urb = free_list_get ();
|
||
|
||
if (urb != 0){
|
||
assert (urb->actual_length == 0);
|
||
d_write_work_in_progress = urb;
|
||
return urb;
|
||
}
|
||
|
||
// The free list is empty. Tell the device handle to reap.
|
||
// Anything it reaps for us will end up on our completed list.
|
||
|
||
if (!d_devhandle->_reap (true))
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
void
|
||
fusb_ephandle_linux::reap_complete_writes ()
|
||
{
|
||
// take a look at the completed_list and xfer to free list after
|
||
// checking for errors.
|
||
|
||
usbdevfs_urb *urb;
|
||
|
||
while ((urb = completed_list_get ()) != 0){
|
||
|
||
// Check for any errors or short writes that were reported in the urb.
|
||
// The kernel sets status, actual_length and error_count.
|
||
// error_count is only used for ISO xfers.
|
||
// status is 0 if successful, else is an errno kind of thing
|
||
|
||
if (urb->status != 0){
|
||
fprintf (stderr, "fusb: (status %d) %s\n", urb->status, strerror (-urb->status));
|
||
}
|
||
else if (urb->actual_length != urb->buffer_length){
|
||
fprintf (stderr, "fusb: short write xfer: %d != %d\n",
|
||
urb->actual_length, urb->buffer_length);
|
||
}
|
||
|
||
free_list_add (urb);
|
||
}
|
||
}
|
||
|
||
void
|
||
fusb_ephandle_linux::wait_for_completion ()
|
||
{
|
||
d_devhandle->_wait_for_completion ();
|
||
}
|
||
|
||
// ----------------------------------------------------------------
|
||
// routines for reading
|
||
// ----------------------------------------------------------------
|
||
|
||
int
|
||
fusb_ephandle_linux::read (void *buffer, int nbytes)
|
||
{
|
||
if (!d_started)
|
||
return -1;
|
||
|
||
if (!d_input_p)
|
||
return -1;
|
||
|
||
unsigned char *dst = (unsigned char *) buffer;
|
||
|
||
int n = 0;
|
||
while (n < nbytes){
|
||
|
||
if (d_read_buffer >= d_read_buffer_end)
|
||
if (!reload_read_buffer ())
|
||
return -1;
|
||
|
||
int m = std::min (nbytes - n, (int) (d_read_buffer_end - d_read_buffer));
|
||
|
||
memcpy (&dst[n], d_read_buffer, m);
|
||
d_read_buffer += m;
|
||
n += m;
|
||
}
|
||
|
||
return n;
|
||
}
|
||
|
||
bool
|
||
fusb_ephandle_linux::reload_read_buffer ()
|
||
{
|
||
assert (d_read_buffer >= d_read_buffer_end);
|
||
|
||
usbdevfs_urb *urb;
|
||
|
||
if (d_read_work_in_progress){
|
||
// We're done with this urb. Fire off a read to refill it.
|
||
urb = d_read_work_in_progress;
|
||
d_read_work_in_progress = 0;
|
||
d_read_buffer = 0;
|
||
d_read_buffer_end = 0;
|
||
urb->actual_length = 0;
|
||
if (!submit_urb (urb))
|
||
return false;
|
||
}
|
||
|
||
while (1){
|
||
|
||
while ((urb = completed_list_get ()) == 0)
|
||
if (!d_devhandle->_reap (true))
|
||
return false;
|
||
|
||
// check result of completed read
|
||
|
||
if (urb->status != 0){
|
||
// We've got a problem. Report it and fail.
|
||
fprintf (stderr, "fusb: (rd status %d) %s\n", urb->status, strerror (-urb->status));
|
||
urb->actual_length = 0;
|
||
free_list_add (urb);
|
||
return false;
|
||
}
|
||
|
||
// we've got a happy urb, full of data...
|
||
|
||
d_read_work_in_progress = urb;
|
||
d_read_buffer = (unsigned char *) urb->buffer;
|
||
d_read_buffer_end = d_read_buffer + urb->actual_length;
|
||
|
||
return true;
|
||
}
|
||
}
|
||
|
||
// ----------------------------------------------------------------
|
||
|
||
void
|
||
fusb_ephandle_linux::free_list_add (usbdevfs_urb *urb)
|
||
{
|
||
assert (urb_get_ephandle (urb) == this);
|
||
urb->actual_length = 0;
|
||
d_free_list.push_back (urb);
|
||
}
|
||
|
||
usbdevfs_urb *
|
||
fusb_ephandle_linux::free_list_get ()
|
||
{
|
||
if (d_free_list.empty ())
|
||
return 0;
|
||
|
||
usbdevfs_urb *urb = d_free_list.front ();
|
||
d_free_list.pop_front ();
|
||
return urb;
|
||
}
|
||
|
||
void
|
||
fusb_ephandle_linux::completed_list_add (usbdevfs_urb *urb)
|
||
{
|
||
assert (urb_get_ephandle (urb) == this);
|
||
d_completed_list.push_back (urb);
|
||
}
|
||
|
||
usbdevfs_urb *
|
||
fusb_ephandle_linux::completed_list_get ()
|
||
{
|
||
if (d_completed_list.empty ())
|
||
return 0;
|
||
|
||
usbdevfs_urb *urb = d_completed_list.front ();
|
||
d_completed_list.pop_front ();
|
||
return urb;
|
||
}
|
||
|
||
/*
|
||
* Submit the urb. If successful the urb ends up on the devhandle's
|
||
* pending list, otherwise, it's back on our free list.
|
||
*/
|
||
bool
|
||
fusb_ephandle_linux::submit_urb (usbdevfs_urb *urb)
|
||
{
|
||
if (!d_devhandle->_submit_urb (urb)){ // FIXME record the problem somewhere
|
||
fprintf (stderr, "_submit_urb failed\n");
|
||
free_list_add (urb);
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|