Exemplo n.º 1
0
static int appledisplay_probe(struct usb_interface *iface,
	const struct usb_device_id *id)
{
	struct backlight_properties props;
	struct appledisplay *pdata;
	struct usb_device *udev = interface_to_usbdev(iface);
	struct usb_host_interface *iface_desc;
	struct usb_endpoint_descriptor *endpoint;
	int int_in_endpointAddr = 0;
	int i, retval = -ENOMEM, brightness;
	char bl_name[20];

	/* set up the endpoint information */
	/* use only the first interrupt-in endpoint */
	iface_desc = iface->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
		endpoint = &iface_desc->endpoint[i].desc;
		if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) {
			/* we found an interrupt in endpoint */
			int_in_endpointAddr = endpoint->bEndpointAddress;
			break;
		}
	}
	if (!int_in_endpointAddr) {
		dev_err(&iface->dev, "Could not find int-in endpoint\n");
		return -EIO;
	}

	/* allocate memory for our device state and initialize it */
	pdata = kzalloc(sizeof(struct appledisplay), GFP_KERNEL);
	if (!pdata) {
		retval = -ENOMEM;
		dev_err(&iface->dev, "Out of memory\n");
		goto error;
	}

	pdata->udev = udev;

	spin_lock_init(&pdata->lock);
	INIT_DELAYED_WORK(&pdata->work, appledisplay_work);

	/* Allocate buffer for control messages */
	pdata->msgdata = kmalloc(ACD_MSG_BUFFER_LEN, GFP_KERNEL);
	if (!pdata->msgdata) {
		retval = -ENOMEM;
		dev_err(&iface->dev,
			"Allocating buffer for control messages failed\n");
		goto error;
	}

	/* Allocate interrupt URB */
	pdata->urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!pdata->urb) {
		retval = -ENOMEM;
		dev_err(&iface->dev, "Allocating URB failed\n");
		goto error;
	}

	/* Allocate buffer for interrupt data */
	pdata->urbdata = usb_alloc_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
		GFP_KERNEL, &pdata->urb->transfer_dma);
	if (!pdata->urbdata) {
		retval = -ENOMEM;
		dev_err(&iface->dev, "Allocating URB buffer failed\n");
		goto error;
	}

	/* Configure interrupt URB */
	usb_fill_int_urb(pdata->urb, udev,
		usb_rcvintpipe(udev, int_in_endpointAddr),
		pdata->urbdata, ACD_URB_BUFFER_LEN, appledisplay_complete,
		pdata, 1);
	if (usb_submit_urb(pdata->urb, GFP_KERNEL)) {
		retval = -EIO;
		dev_err(&iface->dev, "Submitting URB failed\n");
		goto error;
	}

	/* Register backlight device */
	snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
		atomic_inc_return_unchecked(&count_displays) - 1);
	memset(&props, 0, sizeof(struct backlight_properties));
	props.type = BACKLIGHT_RAW;
	props.max_brightness = 0xff;
	pdata->bd = backlight_device_register(bl_name, NULL, pdata,
					      &appledisplay_bl_data, &props);
	if (IS_ERR(pdata->bd)) {
		dev_err(&iface->dev, "Backlight registration failed\n");
		retval = PTR_ERR(pdata->bd);
		goto error;
	}

	/* Try to get brightness */
	brightness = appledisplay_bl_get_brightness(pdata->bd);

	if (brightness < 0) {
		retval = brightness;
		dev_err(&iface->dev,
			"Error while getting initial brightness: %d\n", retval);
		goto error;
	}

	/* Set brightness in backlight device */
	pdata->bd->props.brightness = brightness;

	/* save our data pointer in the interface device */
	usb_set_intfdata(iface, pdata);

	printk(KERN_INFO "appledisplay: Apple Cinema Display connected\n");

	return 0;

error:
	if (pdata) {
		if (pdata->urb) {
			usb_kill_urb(pdata->urb);
			if (pdata->urbdata)
				usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
					pdata->urbdata, pdata->urb->transfer_dma);
			usb_free_urb(pdata->urb);
		}
		if (pdata->bd && !IS_ERR(pdata->bd))
			backlight_device_unregister(pdata->bd);
		kfree(pdata->msgdata);
	}
	usb_set_intfdata(iface, NULL);
	kfree(pdata);
	return retval;
}
Exemplo n.º 2
0
static void usb_mouse_close(struct input_dev *dev)
{
	struct usb_mouse *mouse = input_get_drvdata(dev);

	usb_kill_urb(mouse->irq);
}
Exemplo n.º 3
0
void uvc_status_stop(struct uvc_device *dev)
{
	usb_kill_urb(dev->int_urb);
}
Exemplo n.º 4
0
static void f81232_close(struct usb_serial_port *port)
{
	usb_serial_generic_close(port);
	usb_kill_urb(port->interrupt_in_urb);
}
static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
{
	struct acm *acm = container_of(port, struct acm, port);
	int retval = -ENODEV;
	int i;

	dev_dbg(&acm->control->dev, "%s\n", __func__);

	mutex_lock(&acm->mutex);
	if (acm->disconnected)
		goto disconnected;

	retval = usb_autopm_get_interface(acm->control);
	if (retval)
		goto error_get_interface;

	/*
	 * FIXME: Why do we need this? Allocating 64K of physically contiguous
	 * memory is really nasty...
	 */
	set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
	acm->control->needs_remote_wakeup = 1;

	acm->ctrlurb->dev = acm->dev;
	if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
		dev_err(&acm->control->dev,
			"%s - usb_submit_urb(ctrl irq) failed\n", __func__);
		goto error_submit_urb;
	}

	acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
	if (acm_set_control(acm, acm->ctrlout) < 0 &&
	    (acm->ctrl_caps & USB_CDC_CAP_LINE))
		goto error_set_control;

	usb_autopm_put_interface(acm->control);

	/*
	 * Unthrottle device in case the TTY was closed while throttled.
	 */
	spin_lock_irq(&acm->read_lock);
	acm->throttled = 0;
	acm->throttle_req = 0;
	spin_unlock_irq(&acm->read_lock);

	if (acm_submit_read_urbs(acm, GFP_KERNEL))
		goto error_submit_read_urbs;

	mutex_unlock(&acm->mutex);

	return 0;

error_submit_read_urbs:
	for (i = 0; i < acm->rx_buflimit; i++)
		usb_kill_urb(acm->read_urbs[i]);
	acm->ctrlout = 0;
	acm_set_control(acm, acm->ctrlout);
error_set_control:
	usb_kill_urb(acm->ctrlurb);
error_submit_urb:
	usb_autopm_put_interface(acm->control);
error_get_interface:
disconnected:
	mutex_unlock(&acm->mutex);
	return retval;
}
Exemplo n.º 6
0
static void pvr2_buffer_wipe(struct pvr2_buffer *bp)
{
	if (bp->state == pvr2_buffer_state_queued) {
		usb_kill_urb(bp->purb);
	}
}
Exemplo n.º 7
0
static inline void stop_urb(struct urb *urb)
{
	if (urb && urb->status == -EINPROGRESS)
		usb_kill_urb(urb);
}
static int baseband_usb_driver_suspend(struct usb_interface *intf,
	pm_message_t message)
{
	int i, susp_count, j;

	pr_debug("%s intf %p\n", __func__, intf);
#ifdef CONFIG_PM_RUNTIME
	pr_debug("%s: cnt %d intf=%p &intf->dev=%p kobj=%s\n",
			__func__, atomic_read(&intf->dev.power.usage_count),
			intf, &intf->dev, kobject_name(&intf->dev.kobj));
#endif
	for (i = 0; i < max_intfs; i++) {
		pr_debug("[%d]\n", i);
		if (!baseband_usb_net[i])
			continue;
		if (baseband_usb_net[i]->usb.interface != intf) {
			pr_debug("%p != %p\n",
				baseband_usb_net[i]->usb.interface, intf);
			continue;
		}
		/* increment suspend count */
		susp_count = (baseband_usb_net[i]->susp_count)++;
		if (susp_count > 0) {
			pr_debug("%s: susp_count %d > 0 (already suspended)\n",
				__func__, susp_count);
			continue;
		}
		if (susp_count < 0) {
			pr_debug("%s: susp_count %d < 0 (ILLEGAL VALUE)\n",
				__func__, susp_count);
			baseband_usb_net[i]->susp_count = 0;
			continue;
		}
		pr_debug("%s: susp_count = %d (suspending...)\n",
			__func__, susp_count);
		/* acquire semaphore */
		if (down_interruptible(&baseband_usb_net[i]->sem)) {
			pr_err("%s: cannot acquire semaphore\n", __func__);
			continue;
		}
		/* kill usb rx */
		pr_debug("%s: kill rx_urb {\n",__func__);
		for (j = 0; j < RAWIP_RX_BUFS; j++)
			usb_kill_urb(baseband_usb_net[i]->urb_r[j]);

		pr_debug("%s: kill rx_urb }\n",__func__);
		baseband_usb_net[i]->usb.rx_urb = (struct urb *) 0;
		/* cancel tx urb work (will restart after resume) */
		if (!baseband_usb_net[i]->usb.tx_workqueue) {
			pr_err("%s: !tx_workqueue\n", __func__);
			up(&baseband_usb_net[i]->sem);
			continue;
		}
		pr_debug("%s: cancel_work_sync {\n",__func__);
		cancel_work_sync(&baseband_usb_net[i]->usb.tx_work);
		pr_debug("%s: cancel_work_sync }\n",__func__);
		/* release semaphore */
		up(&baseband_usb_net[i]->sem);
	}

	return 0;
}
Exemplo n.º 9
0
Arquivo: ar5523.c Projeto: pof2/ar5523
static void ar5523_cancel_rx_cmd(struct ar5523 *ar)
{
	usb_kill_urb(ar->rx_cmd_urb);
}
static int usb_net_raw_ip_init(void)
{
	int i, j;
	int err;
	char name[32];

	pr_debug("usb_net_raw_ip_init { max_intfs %d\n", max_intfs);

	err = usb_register(&baseband_usb_driver);
	if (err < 0) {
		pr_err("cannot open usb driver - err %d\n", err);
		return err;
	}

	/* create multiple raw-ip network devices */
	for (i = 0; i < max_intfs; i++) {
		/* open baseband usb */
		g_i = i;
		baseband_usb_net[i] = baseband_usb_open(i,
						usb_net_raw_ip_intf[i]);
		if (!baseband_usb_net[i]) {
			pr_err("cannot open baseband usb net\n");
			err = -1;
			goto error_exit;
		}
		init_usb_anchor(&baseband_usb_net[i]->usb.tx_urb_deferred);
		/* register network device */
		usb_net_raw_ip_dev[i] = alloc_netdev(0,
			BASEBAND_USB_NET_DEV_NAME,
			ether_setup);
		if (!usb_net_raw_ip_dev[i]) {
			pr_err("alloc_netdev() failed\n");
			err = -ENOMEM;
			goto error_exit;
		}
		usb_net_raw_ip_dev[i]->netdev_ops = &usb_net_raw_ip_ops;
		usb_net_raw_ip_dev[i]->watchdog_timeo = TX_TIMEOUT;
		random_ether_addr(usb_net_raw_ip_dev[i]->dev_addr);
		err = register_netdev(usb_net_raw_ip_dev[i]);
		if (err < 0) {
			pr_err("cannot register network device - %d\n", err);
			goto error_exit;
		}
		pr_debug("registered baseband usb network device"
				" - dev %p name %s\n", usb_net_raw_ip_dev[i],
				 BASEBAND_USB_NET_DEV_NAME);
		/* start usb rx */
		err = usb_net_raw_ip_setup_rx_urb(baseband_usb_net[i]);
		if (err < 0) {
			pr_err("setup reusable rx urb failed - err %d\n", err);
			goto error_exit;
		}
		err = usb_net_raw_ip_rx_urb_submit(baseband_usb_net[i]);
		if (err < 0) {
			pr_err("submit rx failed - err %d\n", err);
			goto error_exit;
		}
		/* start usb tx */
		sprintf(name, "raw_ip_tx_wq-%d",
			baseband_usb_net[i]->baseband_index);
		baseband_usb_net[i]->usb.tx_workqueue
			= create_singlethread_workqueue(name);
		if (!baseband_usb_net[i]->usb.tx_workqueue) {
			pr_err("cannot create workqueue\n");
			goto error_exit;
		}
		INIT_WORK(&baseband_usb_net[i]->usb.tx_work,
			usb_net_raw_ip_tx_urb_work);
	}

	pr_debug("usb_net_raw_ip_init }\n");
	return 0;

error_exit:
	/* destroy multiple raw-ip network devices */
	for (i = 0; i < max_intfs; i++) {
		/* unregister network device */
		if (usb_net_raw_ip_dev[i]) {
			unregister_netdev(usb_net_raw_ip_dev[i]);
			free_netdev(usb_net_raw_ip_dev[i]);
			usb_net_raw_ip_dev[i] = (struct net_device *) 0;
		}
		/* close baseband usb */
		if (baseband_usb_net[i]) {
			/* stop usb tx */
			if (baseband_usb_net[i]->usb.tx_workqueue) {
				destroy_workqueue(baseband_usb_net[i]
					->usb.tx_workqueue);
				baseband_usb_net[i]->usb.tx_workqueue
					= (struct workqueue_struct *) 0;
			}
			if (baseband_usb_net[i]->usb.tx_urb) {
				usb_kill_urb(baseband_usb_net[i]->usb.tx_urb);
				baseband_usb_net[i]->usb.tx_urb
					= (struct urb *) 0;
			}

			/* stop usb rx */
			for (j = 0; j < RAWIP_RX_BUFS; j++)
				if (baseband_usb_net[i]->urb_r[j])
					usb_kill_urb(baseband_usb_net[i]->
								urb_r[j]);
			usb_net_raw_ip_free_rx_urb(baseband_usb_net[i]);

			/* close usb */
			baseband_usb_close(baseband_usb_net[i]);
			baseband_usb_net[i] = (struct baseband_usb *) 0;
		}
	}
	usb_deregister(&baseband_usb_driver);

	return err;
}
static void usb_net_raw_ip_exit(void)
{
	struct baseband_usb *usb;
	int i, j;

	pr_debug("usb_net_raw_ip_exit {\n");

	/* destroy multiple raw-ip network devices */
	for (i = 0; i < max_intfs; i++) {
		usb = baseband_usb_net[i];
		/* stop baseband usb urbs */
		if (usb) {
			if (usb->usb.interface)
				usb_autopm_get_interface(usb->usb.interface);

			if (usb->usb.tx_workqueue)
				cancel_work_sync(&usb->usb.tx_work);

			/* stop usb tx */
			pr_debug("%s: kill tx urb\n", __func__);
			if (usb->usb.tx_urb) {
				usb_kill_urb(usb->usb.tx_urb);
				usb->usb.tx_urb = NULL;
			}

			/* stop usb rx */
			pr_debug("%s: kill rx urbs\n", __func__);
			for (j = 0; j < RAWIP_RX_BUFS; j++) {
				if (usb->urb_r[j])
					usb_kill_urb(usb->urb_r[j]);
			}
			usb_net_raw_ip_free_rx_urb(usb);

			if (usb->usb.interface)
				usb_autopm_put_interface(usb->usb.interface);
		}

		pr_debug("%s: unregister netdev\n", __func__);
		/* unregister network device */
		if (usb_net_raw_ip_dev[i]) {
			unregister_netdev(usb_net_raw_ip_dev[i]);
			free_netdev(usb_net_raw_ip_dev[i]);
			usb_net_raw_ip_dev[i] = (struct net_device *) 0;
		}

		if (usb) {
			pr_debug("%s: destroy tx workqueue\n", __func__);
			if (usb->usb.tx_workqueue) {
				destroy_workqueue(usb->usb.tx_workqueue);
				usb->usb.tx_workqueue = NULL;
			}

			/* close usb */
			baseband_usb_close(usb);
			baseband_usb_net[i] = NULL;
		}
	}

	pr_debug("close usb driver {\n");
	usb_deregister(&baseband_usb_driver);
	pr_debug("close usb driver }\n");

	pr_debug("usb_net_raw_ip_exit }\n");
}
Exemplo n.º 12
0
/*
 * Read an ack from  the notification endpoint
 *
 * @i2400m:
 * @_ack: pointer to where to store the read data
 * @ack_size: how many bytes we should read
 *
 * Returns: < 0 errno code on error; otherwise, amount of received bytes.
 *
 * Submits a notification read, appends the read data to the given ack
 * buffer and then repeats (until @ack_size bytes have been
 * received).
 */
ssize_t i2400mu_bus_bm_wait_for_ack(struct i2400m *i2400m,
				    struct i2400m_bootrom_header *_ack,
				    size_t ack_size)
{
	ssize_t result = -ENOMEM;
	struct device *dev = i2400m_dev(i2400m);
	struct i2400mu *i2400mu = container_of(i2400m, struct i2400mu, i2400m);
	struct urb notif_urb;
	void *ack = _ack;
	size_t offset, len;
	long val;
	int do_autopm = 1;
	DECLARE_COMPLETION_ONSTACK(notif_completion);

	d_fnstart(8, dev, "(i2400m %p ack %p size %zu)\n",
		  i2400m, ack, ack_size);
	BUG_ON(_ack == i2400m->bm_ack_buf);
	result = usb_autopm_get_interface(i2400mu->usb_iface);
	if (result < 0) {
		dev_err(dev, "BM-ACK: can't get autopm: %d\n", (int) result);
		do_autopm = 0;
	}
	usb_init_urb(&notif_urb);	/* ready notifications */
	usb_get_urb(&notif_urb);
	offset = 0;
	while (offset < ack_size) {
		init_completion(&notif_completion);
		result = i2400mu_notif_submit(i2400mu, &notif_urb,
					      &notif_completion);
		if (result < 0)
			goto error_notif_urb_submit;
		val = wait_for_completion_interruptible_timeout(
			&notif_completion, HZ);
		if (val == 0) {
			result = -ETIMEDOUT;
			usb_kill_urb(&notif_urb);	/* Timedout */
			goto error_notif_wait;
		}
		if (val == -ERESTARTSYS) {
			result = -EINTR;		/* Interrupted */
			usb_kill_urb(&notif_urb);
			goto error_notif_wait;
		}
		result = notif_urb.status;		/* How was the ack? */
		switch (result) {
		case 0:
			break;
		case -EINVAL:			/* while removing driver */
		case -ENODEV:			/* dev disconnect ... */
		case -ENOENT:			/* just ignore it */
		case -ESHUTDOWN:		/* and exit */
		case -ECONNRESET:
			result = -ESHUTDOWN;
			goto error_dev_gone;
		default:				/* any other? */
			usb_kill_urb(&notif_urb);	/* Timedout */
			if (edc_inc(&i2400mu->urb_edc,
				    EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME))
				goto error_exceeded;
			dev_err(dev, "BM-ACK: URB error %d, "
				"retrying\n", notif_urb.status);
			continue;	/* retry */
		}
		if (notif_urb.actual_length == 0) {
			d_printf(6, dev, "ZLP received, retrying\n");
			continue;
		}
		/* Got data, append it to the buffer */
		len = min(ack_size - offset, (size_t) notif_urb.actual_length);
		memcpy(ack + offset, i2400m->bm_ack_buf, len);
		offset += len;
	}
	result = offset;
error_notif_urb_submit:
error_notif_wait:
error_dev_gone:
out:
	if (do_autopm)
		usb_autopm_put_interface(i2400mu->usb_iface);
	d_fnend(8, dev, "(i2400m %p ack %p size %zu) = %ld\n",
		i2400m, ack, ack_size, (long) result);
	return result;

error_exceeded:
	dev_err(dev, "bm: maximum errors in notification URB exceeded; "
		"resetting device\n");
	usb_queue_reset_device(i2400mu->usb_iface);
	goto out;
}
Exemplo n.º 13
0
static void xpad_stop_output(struct usb_xpad *xpad) //清空 out型 urb 的数据
{

    usb_kill_urb(xpad->irq_out);
}
Exemplo n.º 14
0
static void ipheth_kill_urbs(struct ipheth_device *dev)
{
	usb_kill_urb(dev->tx_urb);
	usb_kill_urb(dev->rx_urb);
}
Exemplo n.º 15
0
void x52_close (struct input_dev *idev)
{
    struct x52_joy *joy = input_get_drvdata(idev);

    usb_kill_urb(joy->irq_in);
}
Exemplo n.º 16
0
static void omninet_close(struct usb_serial_port *port)
{
	dbg("%s - port %d", __func__, port->number);
	usb_kill_urb(port->read_urb);
}
Exemplo n.º 17
0
void ctrl_bridge_stop_read(struct ctrl_bridge *dev)
{
	usb_kill_urb(dev->readurb);
	usb_kill_urb(dev->inturb);
}
Exemplo n.º 18
0
static int acm_tty_open(struct tty_struct *tty, struct file *filp)
{
	struct acm *acm;
	int rv = -ENODEV;
	int i;
	dbg("Entering acm_tty_open.");

	mutex_lock(&open_mutex);

	acm = acm_table[tty->index];
	if (!acm || !acm->dev)
		goto err_out;
	else
		rv = 0;

	set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);

	tty->driver_data = acm;
	tty_port_tty_set(&acm->port, tty);

	if (usb_autopm_get_interface(acm->control) < 0)
		goto early_bail;
	else
		acm->control->needs_remote_wakeup = 1;

	mutex_lock(&acm->mutex);
	if (acm->port.count++) {
		usb_autopm_put_interface(acm->control);
		goto done;
	}

	acm->ctrlurb->dev = acm->dev;
	if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
		dbg("usb_submit_urb(ctrl irq) failed");
		goto bail_out;
	}

	if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) &&
	    (acm->ctrl_caps & USB_CDC_CAP_LINE))
		goto full_bailout;

	usb_autopm_put_interface(acm->control);

	INIT_LIST_HEAD(&acm->spare_read_urbs);
	INIT_LIST_HEAD(&acm->spare_read_bufs);
	INIT_LIST_HEAD(&acm->filled_read_bufs);

	for (i = 0; i < acm->rx_buflimit; i++)
		list_add(&(acm->ru[i].list), &acm->spare_read_urbs);
	for (i = 0; i < acm->rx_buflimit; i++)
		list_add(&(acm->rb[i].list), &acm->spare_read_bufs);

	acm->throttle = 0;

	set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
	rv = tty_port_block_til_ready(&acm->port, tty, filp);
	tasklet_schedule(&acm->urb_task);
done:
	mutex_unlock(&acm->mutex);
err_out:
	mutex_unlock(&open_mutex);
	return rv;

full_bailout:
	usb_kill_urb(acm->ctrlurb);
bail_out:
	usb_autopm_put_interface(acm->control);
	acm->port.count--;
	mutex_unlock(&acm->mutex);
early_bail:
	mutex_unlock(&open_mutex);
	tty_port_tty_set(&acm->port, NULL);
	return -EIO;
}
Exemplo n.º 19
0
static inline void mts_urb_abort(struct mts_desc* desc) {
	MTS_DEBUG_GOT_HERE();
	mts_debug_dump(desc);

	usb_kill_urb( desc->urb );
}
Exemplo n.º 20
0
static void omninet_close(struct tty_struct *tty,
			struct usb_serial_port *port, struct file *filp)
{
	dbg("%s - port %d", __func__, port->number);
	usb_kill_urb(port->read_urb);
}
Exemplo n.º 21
0
Arquivo: tmsi.c Projeto: tdy/tmsi
void free_urb(struct urb *urb)
{
   usb_kill_urb(urb);
   kfree(urb->transfer_buffer);
   usb_free_urb(urb);
}
Exemplo n.º 22
0
static void xpad_stop_output(struct usb_xpad *xpad)
{
	usb_kill_urb(xpad->irq_out);
}
Exemplo n.º 23
0
/* This is the common part of the URB message submission code
 *
 * All URBs from the usb-storage driver involved in handling a queued scsi
 * command _must_ pass through this function (or something like it) for the
 * abort mechanisms to work properly.
 */
static int usb_stor_msg_common(struct us_data *us, int timeout)
{
	struct completion urb_done;
	long timeleft;
	int status;

	/* don't submit URBs during abort processing */
	if (test_bit(US_FLIDX_ABORTING, &us->dflags))
		return -EIO;

	/* set up data structures for the wakeup system */
	init_completion(&urb_done);

	/* fill the common fields in the URB */
	us->current_urb->context = &urb_done;
	us->current_urb->actual_length = 0;
	us->current_urb->error_count = 0;
	us->current_urb->status = 0;

	/* we assume that if transfer_buffer isn't us->iobuf then it
	 * hasn't been mapped for DMA.  Yes, this is clunky, but it's
	 * easier than always having the caller tell us whether the
	 * transfer buffer has already been mapped. */
	us->current_urb->transfer_flags = URB_NO_SETUP_DMA_MAP;
	if (us->current_urb->transfer_buffer == us->iobuf)
		us->current_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
	us->current_urb->transfer_dma = us->iobuf_dma;
	us->current_urb->setup_dma = us->cr_dma;

	/* submit the URB */
	status = usb_submit_urb(us->current_urb, GFP_NOIO);
	if (status) {
		/* something went wrong */
		return status;
	}

	/* since the URB has been submitted successfully, it's now okay
	 * to cancel it */
	set_bit(US_FLIDX_URB_ACTIVE, &us->dflags);

	/* did an abort occur during the submission? */
	if (test_bit(US_FLIDX_ABORTING, &us->dflags)) {

		/* cancel the URB, if it hasn't been cancelled already */
		if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags)) {
			US_DEBUGP("-- cancelling URB\n");
			usb_unlink_urb(us->current_urb);
		}
	}
 
	/* wait for the completion of the URB */
	timeleft = wait_for_completion_interruptible_timeout(
			&urb_done, timeout ? : MAX_SCHEDULE_TIMEOUT);
 
	clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags);

	if (timeleft <= 0) {
		US_DEBUGP("%s -- cancelling URB\n",
			  timeleft == 0 ? "Timeout" : "Signal");
		usb_kill_urb(us->current_urb);
	}

	/* return the URB status */
	return us->current_urb->status;
}
Exemplo n.º 24
0
static int  mct_u232_open (struct usb_serial_port *port, struct file *filp)
{
	struct usb_serial *serial = port->serial;
	struct mct_u232_private *priv = usb_get_serial_port_data(port);
	int retval = 0;
	unsigned int control_state;
	unsigned long flags;
	unsigned char last_lcr;
	unsigned char last_msr;

	dbg("%s port %d", __FUNCTION__, port->number);

	/* Compensate for a hardware bug: although the Sitecom U232-P25
	 * device reports a maximum output packet size of 32 bytes,
	 * it seems to be able to accept only 16 bytes (and that's what
	 * SniffUSB says too...)
	 */
	if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID)
		port->bulk_out_size = 16;

	/* Do a defined restart: the normal serial device seems to 
	 * always turn on DTR and RTS here, so do the same. I'm not
	 * sure if this is really necessary. But it should not harm
	 * either.
	 */
	spin_lock_irqsave(&priv->lock, flags);
	if (port->tty->termios->c_cflag & CBAUD)
		priv->control_state = TIOCM_DTR | TIOCM_RTS;
	else
		priv->control_state = 0;
	
	priv->last_lcr = (MCT_U232_DATA_BITS_8 | 
			  MCT_U232_PARITY_NONE |
			  MCT_U232_STOP_BITS_1);
	control_state = priv->control_state;
	last_lcr = priv->last_lcr;
	spin_unlock_irqrestore(&priv->lock, flags);
	mct_u232_set_modem_ctrl(serial, control_state);
	mct_u232_set_line_ctrl(serial, last_lcr);

	/* Read modem status and update control state */
	mct_u232_get_modem_stat(serial, &last_msr);
	spin_lock_irqsave(&priv->lock, flags);
	priv->last_msr = last_msr;
	mct_u232_msr_to_state(&priv->control_state, priv->last_msr);
	spin_unlock_irqrestore(&priv->lock, flags);

	port->read_urb->dev = port->serial->dev;
	retval = usb_submit_urb(port->read_urb, GFP_KERNEL);
	if (retval) {
		err("usb_submit_urb(read bulk) failed pipe 0x%x err %d",
		    port->read_urb->pipe, retval);
		goto error;
	}

	port->interrupt_in_urb->dev = port->serial->dev;
	retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
	if (retval) {
		usb_kill_urb(port->read_urb);
		err(" usb_submit_urb(read int) failed pipe 0x%x err %d",
		    port->interrupt_in_urb->pipe, retval);
		goto error;
	}
	return 0;

error:
	return retval;
} /* mct_u232_open */
Exemplo n.º 25
0
static void navman_close(struct usb_serial_port *port)
{
	dbg("%s - port %d", __func__, port->number);

	usb_kill_urb(port->interrupt_in_urb);
}
Exemplo n.º 26
0
static void qt2_disconnect(struct usb_serial *serial)
{
	struct qt2_serial_private *serial_priv = usb_get_serial_data(serial);

	usb_kill_urb(serial_priv->read_urb);
}
Exemplo n.º 27
0
static void kbtab_close(struct input_dev *dev)
{
	struct kbtab *kbtab = input_get_drvdata(dev);

	usb_kill_urb(kbtab->irq);
}
Exemplo n.º 28
0
static
int axusbnet_stop (struct net_device *net)
{
	struct usbnet		*dev = netdev_priv(net);
	struct driver_info	*info = dev->driver_info;
	int			temp;
	int			retval;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
	DECLARE_WAIT_QUEUE_HEAD_ONSTACK (unlink_wakeup);
#else
	DECLARE_WAIT_QUEUE_HEAD (unlink_wakeup);
#endif
	DECLARE_WAITQUEUE (wait, current);

	netif_stop_queue (net);

	if (netif_msg_ifdown (dev))
		devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
			dev->stats.rx_packets, dev->stats.tx_packets,
			dev->stats.rx_errors, dev->stats.tx_errors
			);

	/* allow minidriver to stop correctly (wireless devices to turn off
	 * radio etc) */
	if (info->stop) {
		retval = info->stop(dev);
		if (retval < 0 && netif_msg_ifdown(dev))
			devinfo(dev,
				"stop fail (%d) usbnet usb-%s-%s, %s",
				retval,
				dev->udev->bus->bus_name, dev->udev->devpath,
				info->description);
	}

	if (!(info->flags & FLAG_AVOID_UNLINK_URBS)) {
		/* ensure there are no more active urbs */
		add_wait_queue(&unlink_wakeup, &wait);
		dev->wait = &unlink_wakeup;
		temp = unlink_urbs(dev, &dev->txq) +
			unlink_urbs(dev, &dev->rxq);

		/* maybe wait for deletions to finish. */
		while (!skb_queue_empty(&dev->rxq)
				&& !skb_queue_empty(&dev->txq)
				&& !skb_queue_empty(&dev->done)) {
			msleep(UNLINK_TIMEOUT_MS);
			if (netif_msg_ifdown(dev))
				devdbg(dev, "waited for %d urb completions",
					temp);
		}
		dev->wait = NULL;
		remove_wait_queue(&unlink_wakeup, &wait);
	}

	usb_kill_urb(dev->interrupt);

	/* deferred work (task, timer, softirq) must also stop.
	 * can't flush_scheduled_work() until we drop rtnl (later),
	 * else workers could deadlock; so make workers a NOP.
	 */
	dev->flags = 0;
	del_timer_sync (&dev->delay);
	tasklet_kill (&dev->bh);

	return 0;
}
Exemplo n.º 29
0
static void bcm5974_pause_traffic(struct bcm5974 *dev)
{
	usb_kill_urb(dev->tp_urb);
	usb_kill_urb(dev->bt_urb);
	bcm5974_wellspring_mode(dev, false);
}
Exemplo n.º 30
0
static int gigaset_probe(struct usb_interface *interface,
			 const struct usb_device_id *id)
{
	int retval;
	struct usb_device *udev = interface_to_usbdev(interface);
	unsigned int ifnum;
	struct usb_host_interface *hostif;
	struct cardstate *cs = NULL;
	struct usb_cardstate *ucs = NULL;
	struct usb_endpoint_descriptor *endpoint;
	int buffer_size;
	int alt;

	gig_dbg(DEBUG_ANY,
		"%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)",
		__func__, le16_to_cpu(udev->descriptor.idVendor),
		le16_to_cpu(udev->descriptor.idProduct));

	retval = -ENODEV; //FIXME

	/* See if the device offered us matches what we can accept */
	if ((le16_to_cpu(udev->descriptor.idVendor)  != USB_M105_VENDOR_ID) ||
	    (le16_to_cpu(udev->descriptor.idProduct) != USB_M105_PRODUCT_ID))
		return -ENODEV;

	/* this starts to become ascii art... */
	hostif = interface->cur_altsetting;
	alt = hostif->desc.bAlternateSetting;
	ifnum = hostif->desc.bInterfaceNumber; // FIXME ?

	if (alt != 0 || ifnum != 0) {
		dev_warn(&udev->dev, "ifnum %d, alt %d\n", ifnum, alt);
		return -ENODEV;
	}

	/* Reject application specific intefaces
	 *
	 */
	if (hostif->desc.bInterfaceClass != 255) {
		dev_info(&udev->dev,
		"%s: Device matched but iface_desc[%d]->bInterfaceClass==%d!\n",
			 __func__, ifnum, hostif->desc.bInterfaceClass);
		return -ENODEV;
	}

	dev_info(&udev->dev, "%s: Device matched ... !\n", __func__);

	cs = gigaset_getunassignedcs(driver);
	if (!cs) {
		dev_warn(&udev->dev, "no free cardstate\n");
		return -ENODEV;
	}
	ucs = cs->hw.usb;

	/* save off device structure ptrs for later use */
	usb_get_dev(udev);
	ucs->udev = udev;
	ucs->interface = interface;
	cs->dev = &interface->dev;

	/* save address of controller structure */
	usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs);

	endpoint = &hostif->endpoint[0].desc;

	buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
	ucs->bulk_out_size = buffer_size;
	ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress;
	ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
	if (!ucs->bulk_out_buffer) {
		dev_err(cs->dev, "Couldn't allocate bulk_out_buffer\n");
		retval = -ENOMEM;
		goto error;
	}

	ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL);
	if (!ucs->bulk_out_urb) {
		dev_err(cs->dev, "Couldn't allocate bulk_out_urb\n");
		retval = -ENOMEM;
		goto error;
	}

	endpoint = &hostif->endpoint[1].desc;

	atomic_set(&ucs->busy, 0);

	ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL);
	if (!ucs->read_urb) {
		dev_err(cs->dev, "No free urbs available\n");
		retval = -ENOMEM;
		goto error;
	}
	buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
	ucs->rcvbuf_size = buffer_size;
	ucs->int_in_endpointAddr = endpoint->bEndpointAddress;
	cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL);
	if (!cs->inbuf[0].rcvbuf) {
		dev_err(cs->dev, "Couldn't allocate rcvbuf\n");
		retval = -ENOMEM;
		goto error;
	}
	/* Fill the interrupt urb and send it to the core */
	usb_fill_int_urb(ucs->read_urb, udev,
			 usb_rcvintpipe(udev,
					endpoint->bEndpointAddress & 0x0f),
			 cs->inbuf[0].rcvbuf, buffer_size,
			 gigaset_read_int_callback,
			 cs->inbuf + 0, endpoint->bInterval);

	retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL);
	if (retval) {
		dev_err(cs->dev, "Could not submit URB (error %d)\n", -retval);
		goto error;
	}

	/* tell common part that the device is ready */
	if (startmode == SM_LOCKED)
		atomic_set(&cs->mstate, MS_LOCKED);

	if (!gigaset_start(cs)) {
		tasklet_kill(&cs->write_tasklet);
		retval = -ENODEV; //FIXME
		goto error;
	}
	return 0;

error:
	if (ucs->read_urb)
		usb_kill_urb(ucs->read_urb);
	kfree(ucs->bulk_out_buffer);
	if (ucs->bulk_out_urb != NULL)
		usb_free_urb(ucs->bulk_out_urb);
	kfree(cs->inbuf[0].rcvbuf);
	if (ucs->read_urb != NULL)
		usb_free_urb(ucs->read_urb);
	usb_set_intfdata(interface, NULL);
	ucs->read_urb = ucs->bulk_out_urb = NULL;
	cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
	usb_put_dev(ucs->udev);
	ucs->udev = NULL;
	ucs->interface = NULL;
	gigaset_unassign(cs);
	return retval;
}