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crypto: mxs-dcp - Add empty hash export and import

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Crypto framework requires export/import in async hash. If driver do not
implement them, wrapper functions in framework will be used, and it will
cause error during ahash alg registration (unless one disables crypto
internal tests). To make change in framework and expose this requirement,
I will remove wrappers from crypto/ahash.c , but this can broke code which
depends on them. Add empty hash export and import, with the same behaviour
as in framework and expose this directly in driver. This can also prevent
OOPS when config option in Cryptographic API 'Disable run-time self tests'
will be enabled.

Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kamil Konieczny 2018-01-18 19:34:00 +01:00 committed by Herbert Xu
parent c927b080c6
commit 9190b6fd5d
1 changed files with 14 additions and 0 deletions
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14
drivers/crypto/mxs-dcp.c
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@ -759,6 +759,16 @@ static int dcp_sha_digest(struct ahash_request *req)
return dcp_sha_finup(req);
}
static int dcp_sha_noimport(struct ahash_request *req, const void *in)
{
return -ENOSYS;
}
static int dcp_sha_noexport(struct ahash_request *req, void *out)
{
return -ENOSYS;
}
static int dcp_sha_cra_init(struct crypto_tfm *tfm)
{
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
@ -829,6 +839,8 @@ static struct ahash_alg dcp_sha1_alg = {
.final = dcp_sha_final,
.finup = dcp_sha_finup,
.digest = dcp_sha_digest,
.import = dcp_sha_noimport,
.export = dcp_sha_noexport,
.halg = {
.digestsize = SHA1_DIGEST_SIZE,
.base = {
@ -853,6 +865,8 @@ static struct ahash_alg dcp_sha256_alg = {
.final = dcp_sha_final,
.finup = dcp_sha_finup,
.digest = dcp_sha_digest,
.import = dcp_sha_noimport,
.export = dcp_sha_noexport,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.base = {