[PATCH] crypto: cmac - return -EINVAL if block size is unsupported

[Eric Biggers]

cmac_create() previously returned 0 if a cipher with a block size other
than 8 or 16 bytes was specified.  It should return -EINVAL instead.
Granted, this doesn't actually change any behavior because cryptomgr
currently ignores any return value other than -EAGAIN from template
->create() functions.

Signed-off-by: Eric Biggers <ebigg...@google.com>
---
 crypto/cmac.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crypto/cmac.c b/crypto/cmac.c
index 7a8bfbd..b6c4059 100644
--- a/crypto/cmac.c
+++ b/crypto/cmac.c
@@ -243,6 +243,7 @@ static int cmac_create(struct crypto_template *tmpl, struct 
rtattr **tb)
        case 8:
                break;
        default:
+               err = -EINVAL;
                goto out_put_alg;
        }
 
-- 
2.8.0.rc3.226.g39d4020