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From:   Vincent Whitchurch <vincent.whitchurch@axis.com>
To:     <herbert@gondor.apana.org.au>, <davem@davemloft.net>,
        <jesper.nilsson@axis.com>, <lars.persson@axis.com>
CC:     <kernel@axis.com>,
        Vincent Whitchurch <vincent.whitchurch@axis.com>,
        <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH 12/12] crypto: axis - allow small size for AEAD
Date:   Tue, 10 Jan 2023 14:50:42 +0100
Message-ID: <20230110135042.2940847-13-vincent.whitchurch@axis.com>
In-Reply-To: <20230110135042.2940847-1-vincent.whitchurch@axis.com>
References: <20230110135042.2940847-1-vincent.whitchurch@axis.com>
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Allow sizes smaller than the AES block size to fix this failure with
CRYPTO_MANAGER_EXTRA_TESTS:

 alg: aead: artpec-gcm-aes decryption failed on test vector "random:
 alen=0 plen=1 authsize=4 klen=32 novrfy=0"; expected_error=0,
 actual_error=-22, cfg="random: inplace_one_sglist may_sleep use_final
 src_divs=[<reimport>9.71%@+778, <flush>23.43%@+2818, 52.69%@+6,
 <flush>11.98%@+1030, 2.19%@+3986] iv_offset=40 key_offset=32"

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
---
 drivers/crypto/axis/artpec6_crypto.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/artpec6_crypto.c
index 938faf3afa69..b6fa2af42cd0 100644
--- a/drivers/crypto/axis/artpec6_crypto.c
+++ b/drivers/crypto/axis/artpec6_crypto.c
@@ -1452,8 +1452,6 @@ static int artpec6_crypto_aead_decrypt(struct aead_request *req)
 	struct artpec6_crypto_aead_req_ctx *req_ctx = aead_request_ctx(req);
 
 	req_ctx->decrypt = true;
-	if (req->cryptlen < AES_BLOCK_SIZE)
-		return -EINVAL;
 
 	ret = artpec6_crypto_common_init(&req_ctx->common,
 				  &req->base,
-- 
2.34.1