diff options
Diffstat (limited to 'drivers/crypto/caam/sg_sw_sec4.h')
| -rw-r--r-- | drivers/crypto/caam/sg_sw_sec4.h | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index b68b74cc7b77..18cd6d1f5870 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -15,7 +15,6 @@ static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, { sec4_sg_ptr->ptr = dma; sec4_sg_ptr->len = len; - sec4_sg_ptr->reserved = 0; sec4_sg_ptr->buf_pool_id = 0; sec4_sg_ptr->offset = offset; #ifdef DEBUG @@ -106,9 +105,15 @@ static inline void dma_unmap_sg_chained( { if (unlikely(chained)) { int i; + struct scatterlist *tsg = sg; + + /* + * Use a local copy of the sg pointer to avoid moving the + * head of the list pointed to by sg as we walk the list. + */ for (i = 0; i < nents; i++) { - dma_unmap_sg(dev, sg, 1, dir); - sg = sg_next(sg); + dma_unmap_sg(dev, tsg, 1, dir); + tsg = sg_next(tsg); } } else if (nents) { dma_unmap_sg(dev, sg, nents, dir); @@ -119,19 +124,23 @@ 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; + struct scatterlist *tsg = sg; + + /* + * Use a local copy of the sg pointer to avoid moving the + * head of the list pointed to by sg as we walk the list. + */ for (i = 0; i < nents; i++) { - if (!dma_map_sg(dev, sg, 1, dir)) { - dma_unmap_sg_chained(dev, first, i, dir, + if (!dma_map_sg(dev, tsg, 1, dir)) { + dma_unmap_sg_chained(dev, sg, i, dir, chained); nents = 0; break; } - sg = sg_next(sg); + tsg = sg_next(tsg); } } else nents = dma_map_sg(dev, sg, nents, dir); |