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authorAlex Shi <alex.shi@linaro.org>2016-06-24 12:18:41 +0800
committerAlex Shi <alex.shi@linaro.org>2016-06-24 12:18:41 +0800
commitbbe8f0ee88a1eb4bb1e72e593b008faf387f30ac (patch)
tree83368f0950f7396944642057dd521044b696b7f5 /drivers/crypto/ccp/ccp-crypto-aes-xts.c
parent1beb6ea36b283c1dc34812c6ef9bf56a1e494f8c (diff)
parentd420f00c7bfb405884dd71fb7f87974f0d1be455 (diff)
downloadlinux-linaro-stable-bbe8f0ee88a1eb4bb1e72e593b008faf387f30ac.tar.gz
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.c17
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;