crypto: caampkc - 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>

diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index 57f399caa977b1f43832126e2cfb098df3313703..9c508ba6b0f18469e594da3e7633670d380d3b07 100644 (file)
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -911,12 +911,11 @@ err:
        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 */