diff options
| author | Alex Shi <alex.shi@linaro.org> | 2016-06-24 12:18:41 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-06-24 12:18:41 +0800 |
| commit | bbe8f0ee88a1eb4bb1e72e593b008faf387f30ac (patch) | |
| tree | 83368f0950f7396944642057dd521044b696b7f5 /drivers/crypto/ccp/ccp-crypto-aes-xts.c | |
| parent | 1beb6ea36b283c1dc34812c6ef9bf56a1e494f8c (diff) | |
| parent | d420f00c7bfb405884dd71fb7f87974f0d1be455 (diff) | |
Merge tag 'v3.18.36' into linux-linaro-lsk-v3.18lsk-v3.18-16.06
This is the 3.18.36 stable release
Diffstat (limited to 'drivers/crypto/ccp/ccp-crypto-aes-xts.c')
| -rw-r--r-- | drivers/crypto/ccp/ccp-crypto-aes-xts.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-xts.c b/drivers/crypto/ccp/ccp-crypto-aes-xts.c index 0cc5594b7de3..8b294c27c8b1 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-xts.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-xts.c @@ -123,6 +123,7 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req, struct ccp_ctx *ctx = crypto_tfm_ctx(req->base.tfm); struct ccp_aes_req_ctx *rctx = ablkcipher_request_ctx(req); unsigned int unit; + u32 unit_size; int ret; if (!ctx->u.aes.key_len) @@ -134,11 +135,17 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req, if (!req->info) return -EINVAL; - for (unit = 0; unit < ARRAY_SIZE(unit_size_map); unit++) - if (!(req->nbytes & (unit_size_map[unit].size - 1))) - break; + unit_size = CCP_XTS_AES_UNIT_SIZE__LAST; + if (req->nbytes <= unit_size_map[0].size) { + for (unit = 0; unit < ARRAY_SIZE(unit_size_map); unit++) { + if (!(req->nbytes & (unit_size_map[unit].size - 1))) { + unit_size = unit_size_map[unit].value; + break; + } + } + } - if ((unit_size_map[unit].value == CCP_XTS_AES_UNIT_SIZE__LAST) || + if ((unit_size == CCP_XTS_AES_UNIT_SIZE__LAST) || (ctx->u.aes.key_len != AES_KEYSIZE_128)) { /* Use the fallback to process the request for any * unsupported unit sizes or key sizes @@ -159,7 +166,7 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req, rctx->cmd.engine = CCP_ENGINE_XTS_AES_128; rctx->cmd.u.xts.action = (encrypt) ? CCP_AES_ACTION_ENCRYPT : CCP_AES_ACTION_DECRYPT; - rctx->cmd.u.xts.unit_size = unit_size_map[unit].value; + rctx->cmd.u.xts.unit_size = unit_size; rctx->cmd.u.xts.key = &ctx->u.aes.key_sg; rctx->cmd.u.xts.key_len = ctx->u.aes.key_len; rctx->cmd.u.xts.iv = &rctx->iv_sg; |