Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/lib/sg_split.c b/lib/sg_split.c
index b063410..60a0bab 100644
--- a/lib/sg_split.c
+++ b/lib/sg_split.c
@@ -1,10 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Robert Jarzmik <robert.jarzmik@free.fr>
*
* Scatterlist splitting helpers.
- *
- * This source code is licensed under the GNU General Public License,
- * Version 2. See the file COPYING for more details.
*/
#include <linux/scatterlist.h>
@@ -178,11 +176,13 @@
* The order of these 3 calls is important and should be kept.
*/
sg_split_phys(splitters, nb_splits);
- ret = sg_calculate_split(in, in_mapped_nents, nb_splits, skip,
- split_sizes, splitters, true);
- if (ret < 0)
- goto err;
- sg_split_mapped(splitters, nb_splits);
+ if (in_mapped_nents) {
+ ret = sg_calculate_split(in, in_mapped_nents, nb_splits, skip,
+ split_sizes, splitters, true);
+ if (ret < 0)
+ goto err;
+ sg_split_mapped(splitters, nb_splits);
+ }
for (i = 0; i < nb_splits; i++) {
out[i] = splitters[i].out_sg;