crypto: mxs-dcp - Add empty hash export and import (9190b6fd) · Commits · e / devices / android_kernel_teracube_emerald

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>

drivers/crypto/mxs-dcp.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -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 = {