diff options
| -rw-r--r-- | drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c index 7f1940c6cc41..5bb950182026 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c @@ -28,6 +28,7 @@ static bool sun8i_ss_need_fallback(struct skcipher_request *areq) struct scatterlist *in_sg = areq->src; struct scatterlist *out_sg = areq->dst; struct scatterlist *sg; + unsigned int todo, len; if (areq->cryptlen == 0 || areq->cryptlen % 16) { algt->stat_fb_len++; @@ -40,13 +41,11 @@ static bool sun8i_ss_need_fallback(struct skcipher_request *areq) return true; } + len = areq->cryptlen; sg = areq->src; while (sg) { - if ((sg->length % 16) != 0) { - algt->stat_fb_sglen++; - return true; - } - if ((sg_dma_len(sg) % 16) != 0) { + todo = min(len, sg->length); + if ((todo % 16) != 0) { algt->stat_fb_sglen++; return true; } @@ -54,15 +53,14 @@ static bool sun8i_ss_need_fallback(struct skcipher_request *areq) algt->stat_fb_align++; return true; } + len -= todo; sg = sg_next(sg); } + len = areq->cryptlen; sg = areq->dst; while (sg) { - if ((sg->length % 16) != 0) { - algt->stat_fb_sglen++; - return true; - } - if ((sg_dma_len(sg) % 16) != 0) { + todo = min(len, sg->length); + if ((todo % 16) != 0) { algt->stat_fb_sglen++; return true; } @@ -70,6 +68,7 @@ static bool sun8i_ss_need_fallback(struct skcipher_request *areq) algt->stat_fb_align++; return true; } + len -= todo; sg = sg_next(sg); } |