diff options
Diffstat (limited to 'lib/sg_split.c')
| -rw-r--r-- | lib/sg_split.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/lib/sg_split.c b/lib/sg_split.c index b063410c3593..0f89aab5c671 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> @@ -90,8 +88,6 @@ static void sg_split_phys(struct sg_splitter *splitters, const int nb_splits) if (!j) { out_sg->offset += split->skip_sg0; out_sg->length -= split->skip_sg0; - } else { - out_sg->offset = 0; } sg_dma_address(out_sg) = 0; sg_dma_len(out_sg) = 0; @@ -178,11 +174,13 @@ int sg_split(struct scatterlist *in, const int in_mapped_nents, * 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; |