usb_mark_last_busy(acm->dev);
        retval = usb_submit_urb (urb, GFP_ATOMIC);
        if (retval)
-               err ("%s - usb_submit_urb failed with result %d",
-                    __func__, retval);
+               dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with "
+                       "result %d", __func__, retval);
 }
 
 /* data interface returns incoming bytes, or we got unthrottled */
 
        rv = usb_autopm_get_interface(acm->control);
        if (rv < 0) {
-               err("Autopm failure in %s", __func__);
+               dev_err(&acm->dev->dev, "Autopm failure in %s\n", __func__);
                return;
        }
        if (acm->delayed_wb) {
        
        /* normal probing*/
        if (!buffer) {
-               err("Weird descriptor references\n");
+               dev_err(&intf->dev, "Weird descriptor references\n");
                return -EINVAL;
        }
 
                        buflen = intf->cur_altsetting->endpoint->extralen;
                        buffer = intf->cur_altsetting->endpoint->extra;
                } else {
-                       err("Zero length descriptor references\n");
+                       dev_err(&intf->dev,
+                               "Zero length descriptor references\n");
                        return -EINVAL;
                }
        }
 
        while (buflen > 0) {
                if (buffer [1] != USB_DT_CS_INTERFACE) {
-                       err("skipping garbage\n");
+                       dev_err(&intf->dev, "skipping garbage\n");
                        goto next_desc;
                }
 
                switch (buffer [2]) {
                        case USB_CDC_UNION_TYPE: /* we've found it */
                                if (union_header) {
-                                       err("More than one union descriptor, skipping ...");
+                                       dev_err(&intf->dev, "More than one "
+                                               "union descriptor, "
+                                               "skipping ...\n");
                                        goto next_desc;
                                }
                                union_header = (struct usb_cdc_union_desc *)
                                call_management_function = buffer[3];
                                call_interface_num = buffer[4];
                                if ((call_management_function & 3) != 3)
-                                       err("This device cannot do calls on its own. It is no modem.");
+                                       dev_err(&intf->dev, "This device "
+                                               "cannot do calls on its own. "
+                                               "It is no modem.\n");
                                break;
                        default:
                                /* there are LOTS more CDC descriptors that
        for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
 
        if (minor == ACM_TTY_MINORS) {
-               err("no more free acm devices");
+               dev_err(&intf->dev, "no more free acm devices\n");
                return -ENODEV;
        }
 
 
                                "nonzero urb status received: -ESHUTDOWN");
                        break;
                case -EPIPE:
-                       err("nonzero urb status received: -EPIPE");
+                       dev_err(&desc->intf->dev,
+                               "nonzero urb status received: -EPIPE\n");
                        break;
                default:
-                       err("Unexpected error %d", status);
+                       dev_err(&desc->intf->dev,
+                               "Unexpected error %d\n", status);
                        break;
                }
        }
                        return; /* unplug */
                case -EPIPE:
                        set_bit(WDM_INT_STALL, &desc->flags);
-                       err("Stall on int endpoint");
+                       dev_err(&desc->intf->dev, "Stall on int endpoint\n");
                        goto sw; /* halt is cleared in work */
                default:
-                       err("nonzero urb status received: %d", status);
+                       dev_err(&desc->intf->dev,
+                               "nonzero urb status received: %d\n", status);
                        break;
                }
        }
 
        if (urb->actual_length < sizeof(struct usb_cdc_notification)) {
-               err("wdm_int_callback - %d bytes", urb->actual_length);
+               dev_err(&desc->intf->dev, "wdm_int_callback - %d bytes\n",
+                       urb->actual_length);
                goto exit;
        }
 
                goto exit;
        default:
                clear_bit(WDM_POLL_RUNNING, &desc->flags);
-               err("unknown notification %d received: index %d len %d",
+               dev_err(&desc->intf->dev,
+                       "unknown notification %d received: index %d len %d\n",
                        dr->bNotificationType, dr->wIndex, dr->wLength);
                goto exit;
        }
 sw:
                        rv = schedule_work(&desc->rxwork);
                        if (rv)
-                               err("Cannot schedule work");
+                               dev_err(&desc->intf->dev,
+                                       "Cannot schedule work\n");
                }
        }
 exit:
        rv = usb_submit_urb(urb, GFP_ATOMIC);
        if (rv)
-               err("%s - usb_submit_urb failed with result %d",
-                    __func__, rv);
+               dev_err(&desc->intf->dev,
+                       "%s - usb_submit_urb failed with result %d\n",
+                       __func__, rv);
 
 }
 
        if (rv < 0) {
                kfree(buf);
                clear_bit(WDM_IN_USE, &desc->flags);
-               err("Tx URB error: %d", rv);
+               dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv);
        } else {
                dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d",
                        req->wIndex);
                        int t = desc->rerr;
                        desc->rerr = 0;
                        spin_unlock_irq(&desc->iuspin);
-                       err("reading had resulted in %d", t);
+                       dev_err(&desc->intf->dev,
+                               "reading had resulted in %d\n", t);
                        rv = -EIO;
                        goto err;
                }
 err:
        mutex_unlock(&desc->rlock);
        if (rv < 0)
-               err("wdm_read: exit error");
+               dev_err(&desc->intf->dev, "wdm_read: exit error\n");
        return rv;
 }
 
 
        wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags));
        if (desc->werr < 0)
-               err("Error in flush path: %d", desc->werr);
+               dev_err(&desc->intf->dev, "Error in flush path: %d\n",
+                       desc->werr);
 
        return desc->werr;
 }
 
        rv = usb_autopm_get_interface(desc->intf);
        if (rv < 0) {
-               err("Error autopm - %d", rv);
+               dev_err(&desc->intf->dev, "Error autopm - %d\n", rv);
                goto out;
        }
        intf->needs_remote_wakeup = 1;
                rv = usb_submit_urb(desc->validity, GFP_KERNEL);
                if (rv < 0) {
                        desc->count--;
-                       err("Error submitting int urb - %d", rv);
+                       dev_err(&desc->intf->dev,
+                               "Error submitting int urb - %d\n", rv);
                }
        } else {
                rv = 0;
 
        while (buflen > 0) {
                if (buffer [1] != USB_DT_CS_INTERFACE) {
-                       err("skipping garbage");
+                       dev_err(&intf->dev, "skipping garbage\n");
                        goto next_desc;
                }
 
                                "Finding maximum buffer length: %d", maxcom);
                        break;
                default:
-                       err("Ignoring extra header, type %d, length %d",
+                       dev_err(&intf->dev,
+                               "Ignoring extra header, type %d, length %d\n",
                                buffer[2], buffer[0]);
                        break;
                }
        if (desc->count) {
                rv = usb_submit_urb(desc->validity, GFP_NOIO);
                if (rv < 0)
-                       err("Error resume submitting int urb - %d", rv);
+                       dev_err(&desc->intf->dev,
+                               "Error resume submitting int urb - %d\n", rv);
        }
        return rv;
 }