diff options
| -rw-r--r-- | drivers/crypto/picoxcell_crypto.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c index 9eb27c71cedf..c2fd860745ad 100644 --- a/drivers/crypto/picoxcell_crypto.c +++ b/drivers/crypto/picoxcell_crypto.c @@ -318,6 +318,7 @@ static int spacc_aead_make_ddts(struct spacc_req *req, u8 *giv) struct spacc_ddt *src_ddt, *dst_ddt; unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(areq)); unsigned nents = sg_count(areq->src, areq->cryptlen); + unsigned total; dma_addr_t iv_addr; struct scatterlist *cur; int i, dst_ents, src_ents, assoc_ents; @@ -361,11 +362,18 @@ static int spacc_aead_make_ddts(struct spacc_req *req, u8 *giv) * Map the associated data. For decryption we don't copy the * associated data. */ + total = areq->assoclen; for_each_sg(areq->assoc, cur, assoc_ents, i) { - ddt_set(src_ddt++, sg_dma_address(cur), sg_dma_len(cur)); + unsigned len = sg_dma_len(cur); + + if (len > total) + len = total; + + total -= len; + + ddt_set(src_ddt++, sg_dma_address(cur), len); if (req->is_encrypt) - ddt_set(dst_ddt++, sg_dma_address(cur), - sg_dma_len(cur)); + ddt_set(dst_ddt++, sg_dma_address(cur), len); } ddt_set(src_ddt++, iv_addr, ivsize); |