diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index a42bd6893bcf978a0dfddb83e54299c3039ed439..a77483befcdac55ff36aa692960be4b693347dd8 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -1045,14 +1045,9 @@ static long video1394_ioctl(struct file *file,
 			if (get_user(qv, &p->packet_sizes))
 				return -EFAULT;
 
-			psizes = kmalloc(buf_size, GFP_KERNEL);
-			if (!psizes)
-				return -ENOMEM;
-
-			if (copy_from_user(psizes, qv, buf_size)) {
-				kfree(psizes);
-				return -EFAULT;
-			}
+			psizes = memdup_user(qv, buf_size);
+			if (IS_ERR(psizes))
+				return PTR_ERR(psizes);
 		}
 
 		spin_lock_irqsave(&d->lock,flags);