drv: no sg mapped is a failure

Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

drv: no sg mapped is a failure
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
46f2dc86 · Federico Vaga · f6f91391 · 46f2dc86
Commit 46f2dc86 authored Aug 14, 2019 by Federico Vaga
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fa-dma.c kernel/fa-dma.c +1 -1

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--- a/kernel/fa-dma.c
+++ b/kernel/fa-dma.c
@@ -336,7 +336,7 @@ static int zfad_dma_prep_slave_sg(struct dma_chan *dchan,
 			       zfad_block->sgt.sgl,
 			       zfad_block->sgt.nents,
 			       DMA_DEV_TO_MEM);
-	if (sg_mapped < 0) {
+	if (sg_mapped <= 0) {
 		err = sg_mapped;
 		goto err_map;
 	}