- bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL);
- if (bufs == NULL)
- return -ENOMEM;
- if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) {
- kfree(bufs);
- return -EFAULT;
- }
+
+ bufs = memdup_user(xfern.bufs,
+ sizeof(void *) * runtime->channels);
+ if (IS_ERR(bufs))
+ return PTR_ERR(bufs);