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crypto: qat - comply with crypto_akcipher_maxsize() 

crypto_akcipher_maxsize() asks for the output buffer size without
caring for errors. It allways assume that will be called after
a valid setkey. Comply with it and return what he wants.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tudor-Dan Ambarus 2017-05-25 10:18:15 +03:00 committed by Herbert Xu
parent e198429c41
commit 515c4d27d6
1 changed files with 2 additions and 2 deletions
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4
drivers/crypto/qat/qat_common/qat_asym_algs.c
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@ -1256,11 +1256,11 @@ static int qat_rsa_setprivkey(struct crypto_akcipher *tfm, const void *key,
return qat_rsa_setkey(tfm, key, keylen, true); return qat_rsa_setkey(tfm, key, keylen, true);
} }
static int qat_rsa_max_size(struct crypto_akcipher *tfm) static unsigned int qat_rsa_max_size(struct crypto_akcipher *tfm)
{ {
struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm); struct qat_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
return (ctx->n) ? ctx->key_sz : -EINVAL; return ctx->key_sz;
} }
static int qat_rsa_init_tfm(struct crypto_akcipher *tfm) static int qat_rsa_init_tfm(struct crypto_akcipher *tfm)