- /* decompress */
- tmp = dlen;
- r = lzo1x_decompress_safe((u8 *) src, slen, dst, &tmp);
+ /* When the input data is not compressed at all,
+ * lzo1x_decompress_safe will fail, so call memcpy()
+ * instead */
+ if (dlen == slen) {
+ memcpy(dst, src, slen);
+ } else {
+ /* decompress */
+ tmp = dlen;
+ r = lzo1x_decompress_safe((u8 *)src, slen, dst, &tmp);
+
+ if (r != LZO_E_OK) {
+ *dst_len = dst - start;
+ return r;
+ }