usbdev = usb_get_dev(interface_to_usbdev(interface));
        if (!usbdev) {
-               printk(KERN_ERR "Enter s2250loader_probe failed\n");
+               dev_err(&interface->dev, "Enter s2250loader_probe failed\n");
                return -1;
        }
-       printk(KERN_INFO "Enter s2250loader_probe 2.6 kernel\n");
-       printk(KERN_INFO "vendor id 0x%x, device id 0x%x devnum:%d\n",
-          usbdev->descriptor.idVendor, usbdev->descriptor.idProduct,
-          usbdev->devnum);
+       dev_info(&interface->dev, "Enter s2250loader_probe 2.6 kernel\n");
+       dev_info(&interface->dev, "vendor id 0x%x, device id 0x%x devnum:%d\n",
+                usbdev->descriptor.idVendor, usbdev->descriptor.idProduct,
+                usbdev->devnum);
 
        if (usbdev->descriptor.bNumConfigurations != 1) {
-               printk(KERN_ERR "can't handle multiple config\n");
+               dev_err(&interface->dev, "can't handle multiple config\n");
                return -1;
        }
        mutex_lock(&s2250_dev_table_mutex);
        }
 
        if (minor < 0 || minor >= MAX_DEVICES) {
-               printk(KERN_ERR "Invalid minor: %d\n", minor);
+               dev_err(&interface->dev, "Invalid minor: %d\n", minor);
                goto failed;
        }
 
        /* Allocate dev data structure */
        s = kmalloc(sizeof(device_extension_t), GFP_KERNEL);
        if (s == NULL) {
-               printk(KERN_ERR "Out of memory\n");
+               dev_err(&interface->dev, "Out of memory\n");
                goto failed;
        }
        s2250_dev_table[minor] = s;
 
-       printk(KERN_INFO "s2250loader_probe: Device %d on Bus %d Minor %d\n",
-               usbdev->devnum, usbdev->bus->busnum, minor);
+       dev_info(&interface->dev,
+                "s2250loader_probe: Device %d on Bus %d Minor %d\n",
+                usbdev->devnum, usbdev->bus->busnum, minor);
 
        memset(s, 0, sizeof(device_extension_t));
        s->usbdev = usbdev;
-       printk(KERN_INFO "loading 2250 loader\n");
+       dev_info(&interface->dev, "loading 2250 loader\n");
 
        kref_init(&(s->kref));
 
        mutex_unlock(&s2250_dev_table_mutex);
 
        if (request_firmware(&fw, S2250_LOADER_FIRMWARE, &usbdev->dev)) {
-               printk(KERN_ERR
+               dev_err(&interface->dev,
                        "s2250: unable to load firmware from file \"%s\"\n",
                        S2250_LOADER_FIRMWARE);
                goto failed2;
        ret = usb_cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
        release_firmware(fw);
        if (0 != ret) {
-               printk(KERN_ERR "loader download failed\n");
+               dev_err(&interface->dev, "loader download failed\n");
                goto failed2;
        }
 
        if (request_firmware(&fw, S2250_FIRMWARE, &usbdev->dev)) {
-               printk(KERN_ERR
+               dev_err(&interface->dev,
                        "s2250: unable to load firmware from file \"%s\"\n",
                        S2250_FIRMWARE);
                goto failed2;
        ret = usb_cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
        release_firmware(fw);
        if (0 != ret) {
-               printk(KERN_ERR "firmware_s2250 download failed\n");
+               dev_err(&interface->dev, "firmware_s2250 download failed\n");
                goto failed2;
        }
 
        if (s)
                kref_put(&(s->kref), s2250loader_delete);
 
-       printk(KERN_ERR "probe failed\n");
+       dev_err(&interface->dev, "probe failed\n");
        return -1;
 }
 
 static void s2250loader_disconnect(struct usb_interface *interface)
 {
        pdevice_extension_t s;
-       printk(KERN_INFO "s2250: disconnect\n");
+       dev_info(&interface->dev, "s2250: disconnect\n");
        s = usb_get_intfdata(interface);
        usb_set_intfdata(interface, NULL);
        kref_put(&(s->kref), s2250loader_delete);