diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/sg_sw_sec4.h | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index efbc1db8da53..b68b74cc7b77 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -100,34 +100,41 @@ static inline int sg_count(struct scatterlist *sg_list, int nbytes, return sg_nents; } -static int dma_map_sg_chained(struct device *dev, struct scatterlist *sg, - unsigned int nents, enum dma_data_direction dir, - bool chained) +static inline void dma_unmap_sg_chained( + struct device *dev, struct scatterlist *sg, unsigned int nents, + enum dma_data_direction dir, bool chained) { if (unlikely(chained)) { int i; for (i = 0; i < nents; i++) { - dma_map_sg(dev, sg, 1, dir); + dma_unmap_sg(dev, sg, 1, dir); sg = sg_next(sg); } - } else { - dma_map_sg(dev, sg, nents, dir); + } else if (nents) { + dma_unmap_sg(dev, sg, nents, dir); } - return nents; } -static int dma_unmap_sg_chained(struct device *dev, struct scatterlist *sg, - unsigned int nents, enum dma_data_direction dir, - bool chained) +static inline int dma_map_sg_chained( + struct device *dev, struct scatterlist *sg, unsigned int nents, + enum dma_data_direction dir, bool chained) { + struct scatterlist *first = sg; + if (unlikely(chained)) { int i; for (i = 0; i < nents; i++) { - dma_unmap_sg(dev, sg, 1, dir); + if (!dma_map_sg(dev, sg, 1, dir)) { + dma_unmap_sg_chained(dev, first, i, dir, + chained); + nents = 0; + break; + } + sg = sg_next(sg); } - } else { - dma_unmap_sg(dev, sg, nents, dir); - } + } else + nents = dma_map_sg(dev, sg, nents, dir); + return nents; } |