crypto: rsa - 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/crypto/rsa.c b/crypto/rsa.c
index 4c280b6..b067f3a 100644
--- a/crypto/rsa.c
+++ b/crypto/rsa.c
@@ -337,11 +337,11 @@
return -ENOMEM;
}
-static int rsa_max_size(struct crypto_akcipher *tfm)
+static unsigned int rsa_max_size(struct crypto_akcipher *tfm)
{
struct rsa_mpi_key *pkey = akcipher_tfm_ctx(tfm);
- return pkey->n ? mpi_get_size(pkey->n) : -EINVAL;
+ return mpi_get_size(pkey->n);
}
static void rsa_exit_tfm(struct crypto_akcipher *tfm)