staging: comedi: dt9812.c: remove err() usage

err() was a very old USB-specific macro that I thought had
gone away.  This patch removes it from being used in the
driver and uses dev_err() instead.

CC: Ian Abbott <abbotti@mev.co.uk>
CC: Mori Hess <fmhess@users.sourceforge.net>
CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/dt9812.c

@@ -547,7 +547,7 @@ static void dt9812_configure_gain(struct usb_dt9812 *dev,
 		rmw->or_value = F020_MASK_ADC0CF_AMP0GN2;
 		break;
 	default:
-		err("Illegal gain %d\n", gain);
+		dev_err(&dev->interface->dev, "Illegal gain %d\n", gain);
 
 	}
 }
@@ -715,7 +715,7 @@ static int dt9812_probe(struct usb_interface *interface,
 	iface_desc = interface->cur_altsetting;
 
 	if (iface_desc->desc.bNumEndpoints != 5) {
-		err("Wrong number of endpoints.");
+		dev_err(&interface->dev, "Wrong number of endpoints.\n");
 		retval = -ENODEV;
 		goto error;
 	}
@@ -781,22 +781,22 @@ static int dt9812_probe(struct usb_interface *interface,
 	}
 
 	if (dt9812_read_info(dev, 1, &dev->vendor, sizeof(dev->vendor)) != 0) {
-		err("Failed to read vendor.");
+		dev_err(&interface->dev, "Failed to read vendor.\n");
 		retval = -ENODEV;
 		goto error;
 	}
 	if (dt9812_read_info(dev, 3, &dev->product, sizeof(dev->product)) != 0) {
-		err("Failed to read product.");
+		dev_err(&interface->dev, "Failed to read product.\n");
 		retval = -ENODEV;
 		goto error;
 	}
 	if (dt9812_read_info(dev, 5, &dev->device, sizeof(dev->device)) != 0) {
-		err("Failed to read device.");
+		dev_err(&interface->dev, "Failed to read device.\n");
 		retval = -ENODEV;
 		goto error;
 	}
 	if (dt9812_read_info(dev, 7, &dev->serial, sizeof(dev->serial)) != 0) {
-		err("Failed to read serial.");
+		dev_err(&interface->dev, "Failed to read serial.\n");
 		retval = -ENODEV;
 		goto error;
 	}
@@ -1146,7 +1146,9 @@ static int __init usb_dt9812_init(void)
 	result = comedi_driver_register(&dt9812_comedi_driver);
 	if (result) {
 		usb_deregister(&dt9812_usb_driver);
-		err("comedi_driver_register failed. Error number %d", result);
+		printk(KERN_ERR KBUILD_MODNAME
+			": comedi_driver_register failed. Error number %d\n",
+			result);
 	}
 
 	return result;