xenbus_dev_error
printf_hook(xenbus_dev_error, 3, 4); /* include/xen/xenbus.h */
xenbus_dev_error(xsd, err, "granting access to tx ring page");
xenbus_dev_error(xsd, err, "granting access to rx ring page");
xenbus_dev_error(xsd, err, "setting up ring");
xenbus_dev_error(xsd, EIO, "starting transaction");
xenbus_dev_error(xsd, err, "completing transaction");
xenbus_dev_error(xsd, err, "%s", message);
xenbus_dev_error(xvdi_get_xsd(xnfp->xnf_devinfo), ENOENT,
xenbus_dev_error(&pdp->xd_xsdev, errno, errstr);
extern void xenbus_dev_error(struct xenbus_device *dev, int err,