USB: appledisplay.c: remove dbg() usage

dbg() was a very old USB-specific macro that should no longer
be used. This patch removes it from being used in the driver
and uses dev_dbg() instead.

CC: Andrew Morton <akpm@linux-foundation.org>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Mike Frysinger <vapier@gentoo.org>
CC: Arun Sharma <asharma@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/misc/appledisplay.c

@@ -88,6 +88,7 @@ static struct workqueue_struct *wq;
 static void appledisplay_complete(struct urb *urb)
 {
 	struct appledisplay *pdata = urb->context;
+	struct device *dev = &pdata->udev->dev;
 	unsigned long flags;
 	int status = urb->status;
 	int retval;
@@ -97,18 +98,18 @@ static void appledisplay_complete(struct urb *urb)
 		/* success */
 		break;
 	case -EOVERFLOW:
-		printk(KERN_ERR "appletouch: OVERFLOW with data "
-			"length %d, actual length is %d\n",
+		dev_err(dev,
+			"OVERFLOW with data length %d, actual length is %d\n",
 			ACD_URB_BUFFER_LEN, pdata->urb->actual_length);
 	case -ECONNRESET:
 	case -ENOENT:
 	case -ESHUTDOWN:
 		/* This urb is terminated, clean up */
-		dbg("%s - urb shuttingdown with status: %d",
+		dev_dbg(dev, "%s - urb shuttingdown with status: %d\n",
 			__func__, status);
 		return;
 	default:
-		dbg("%s - nonzero urb status received: %d",
+		dev_dbg(dev, "%s - nonzero urb status received: %d/n",
 			__func__, status);
 		goto exit;
 	}
@@ -132,8 +133,7 @@ static void appledisplay_complete(struct urb *urb)
 exit:
 	retval = usb_submit_urb(pdata->urb, GFP_ATOMIC);
 	if (retval) {
-		dev_err(&pdata->udev->dev,
-			"%s - usb_submit_urb failed with result %d\n",
+		dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
 			__func__, retval);
 	}
 }