Esempio n. 1
0
int xenbus_dev_probe(struct device *_dev)
{
	struct xenbus_device *dev = to_xenbus_device(_dev);
	struct xenbus_driver *drv = to_xenbus_driver(_dev->driver);
	const struct xenbus_device_id *id;
	int err;

	DPRINTK("%s", dev->nodename);

	if (!drv->probe) {
		err = -ENODEV;
		goto fail;
	}

	id = match_device(drv->ids, dev);
	if (!id) {
		err = -ENODEV;
		goto fail;
	}

	err = talk_to_otherend(dev);
	if (err) {
		dev_warn(&dev->dev,
		         "xenbus_probe: talk_to_otherend on %s failed.\n",
		         dev->nodename);
		return err;
	}

	err = drv->probe(dev, id);
	if (err)
		goto fail;

	err = watch_otherend(dev);
	if (err) {
		dev_warn(&dev->dev,
		         "xenbus_probe: watch_otherend on %s failed.\n",
		         dev->nodename);
		return err;
	}

	return 0;
fail:
	xenbus_dev_error(dev, err, "xenbus_dev_probe on %s", dev->nodename);
	xenbus_switch_state(dev, XenbusStateClosed);
#if defined(CONFIG_XEN) || defined(MODULE)
	return -ENODEV;
#else
	return err;
#endif
}
Esempio n. 2
0
static int xenbus_dev_probe(struct device *_dev)
{
	struct xenbus_device *dev = to_xenbus_device(_dev);
	struct xenbus_driver *drv = to_xenbus_driver(_dev->driver);
	const struct xenbus_device_id *id;
	int err;

	DPRINTK("%s", dev->nodename);

	if (!drv->probe) {
		err = -ENODEV;
		goto fail;
	}

	id = match_device(drv->ids, dev);
	if (!id) {
		err = -ENODEV;
		goto fail;
	}

	err = talk_to_otherend(dev);
	if (err) {
		printk(KERN_WARNING
		       "xenbus_probe: talk_to_otherend on %s failed.\n",
		       dev->nodename);
		return err;
	}

	err = drv->probe(dev, id);
	if (err)
		goto fail;

	err = watch_otherend(dev);
	if (err) {
		printk(KERN_WARNING
		       "xenbus_probe: watch_otherend on %s failed.\n",
		       dev->nodename);
		return err;
	}

	return 0;
fail:
	xenbus_dev_error(dev, err, "xenbus_dev_probe on %s", dev->nodename);
	xenbus_switch_state(dev, XenbusStateClosed);
	return -ENODEV;
}
static int resume_dev(struct device *dev, void *data)
{
	int err;
	struct xenbus_driver *drv;
	struct xenbus_device *xdev;

	DPRINTK("");

	if (dev->driver == NULL)
		return 0;

	drv = to_xenbus_driver(dev->driver);
	xdev = container_of(dev, struct xenbus_device, dev);

	err = talk_to_otherend(xdev);
	if (err) {
		printk(KERN_WARNING
		       "xenbus: resume (talk_to_otherend) %s failed: %i\n",
		       dev_name(dev), err);
		return err;
	}

	xdev->state = XenbusStateInitialising;

	if (drv->resume) {
		err = drv->resume(xdev);
		if (err) {
			printk(KERN_WARNING
			       "xenbus: resume %s failed: %i\n",
			       dev_name(dev), err);
			return err;
		}
	}

	err = watch_otherend(xdev);
	if (err) {
		printk(KERN_WARNING
		       "xenbus_probe: resume (watch_otherend) %s failed: "
		       "%d.\n", dev_name(dev), err);
		return err;
	}

	return 0;
}
Esempio n. 4
0
int xenbus_dev_resume(struct device *dev)
#endif
{
	int err;
	struct xenbus_driver *drv;
	struct xenbus_device *xdev
		= container_of(dev, struct xenbus_device, dev);

	DPRINTK("%s", xdev->nodename);

	if (dev->driver == NULL)
		return 0;
	drv = to_xenbus_driver(dev->driver);
	err = talk_to_otherend(xdev);
	if (err) {
		pr_warning("xenbus: resume (talk_to_otherend) %s failed: %i\n",
			   dev_name(dev), err);
		return err;
	}

	xdev->state = XenbusStateInitialising;

	if (drv->resume) {
		err = drv->resume(xdev);
		if (err) {
			pr_warning("xenbus: resume %s failed: %i\n",
				   dev_name(dev), err);
			return err;
		}
	}

	err = watch_otherend(xdev);
	if (err) {
		pr_warning("xenbus_probe: resume (watch_otherend) %s failed:"
			   " %d\n", dev_name(dev), err);
		return err;
	}

	return 0;
}