[PATCH 1/1] lib: scatterlist: Fix SGL length in sg_split() if !CONFIG_NEED_SG_DMA_LENGTH

[Alexander Egorenkov]

If CONFIG_NEED_SG_DMA_LENGTH is NOT enabled then sg_dma_len() is an alias
for the length field in a SGL. In that case sg_split() wrongly resets
the length of split SGLs to zero after it was set correctly before.

Signed-off-by: Alexander Egorenkov <egorenar-...@posteo.net>
---
 lib/sg_split.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/sg_split.c b/lib/sg_split.c
index 60a0babebf2e..3d9b32084d78 100644
--- a/lib/sg_split.c
+++ b/lib/sg_split.c
@@ -92,7 +92,8 @@ static void sg_split_phys(struct sg_splitter *splitters, 
const int nb_splits)
                                out_sg->offset = 0;
                        }
                        sg_dma_address(out_sg) = 0;
-                       sg_dma_len(out_sg) = 0;
+                       if (IS_ENABLED(CONFIG_NEED_SG_DMA_LENGTH))
+                               sg_dma_len(out_sg) = 0;
                        in_sg = sg_next(in_sg);
                }
                out_sg[-1].length = split->length_last_sg;
-- 
2.31.1