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crypto: caampkc - comply with crypto_akcipher_maxsize()

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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 10:18:14 +03:00 committed by Herbert Xu
parent 1c23b466e9
commit e198429c41
1 changed files with 2 additions and 3 deletions
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5
drivers/crypto/caam/caampkc.c
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@ -911,12 +911,11 @@ static int caam_rsa_set_priv_key(struct crypto_akcipher *tfm, const void *key,
return -ENOMEM;
}
static int caam_rsa_max_size(struct crypto_akcipher *tfm)
static unsigned int caam_rsa_max_size(struct crypto_akcipher *tfm)
{
struct caam_rsa_ctx *ctx = akcipher_tfm_ctx(tfm);
struct caam_rsa_key *key = &ctx->key;
return (key->n) ? key->n_sz : -EINVAL;
return ctx->key.n_sz;
}
/* Per session pkc's driver context creation function */