diff options
| -rw-r--r-- | drivers/crypto/omap-sham.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index ca9e48a19b15..dc091b27affa 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -751,7 +751,10 @@ static int omap_sham_align_sgs(struct scatterlist *sg, if (final) new_len = DIV_ROUND_UP(new_len, bs) * bs; else - new_len = new_len / bs * bs; + new_len = (new_len - 1) / bs * bs; + + if (nbytes != new_len) + list_ok = false; while (nbytes > 0 && sg_tmp) { n++; @@ -847,6 +850,8 @@ static int omap_sham_prepare_request(struct ahash_request *req, bool update) xmit_len = DIV_ROUND_UP(xmit_len, bs) * bs; else xmit_len = xmit_len / bs * bs; + } else if (!final) { + xmit_len -= bs; } hash_later = rctx->total - xmit_len; @@ -1138,7 +1143,7 @@ retry: ctx = ahash_request_ctx(req); err = omap_sham_prepare_request(req, ctx->op == OP_UPDATE); - if (err) + if (err || !ctx->total) goto err1; dev_dbg(dd->dev, "handling new req, op: %lu, nbytes: %d\n", |