crypto: ccm - Fix handling of zero plaintext when computing mac

[pandora-kernel.git] / crypto / ccm.c

diff --git a/crypto/ccm.c b/crypto/ccm.c
index c36d654..2002ca7 100644 (file)
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -271,7 +271,8 @@ static int crypto_ccm_auth(struct aead_request *req, struct scatterlist *plain,
        }
 
        /* compute plaintext into mac */
-       get_data_to_compute(cipher, pctx, plain, cryptlen);
+       if (cryptlen)
+               get_data_to_compute(cipher, pctx, plain, cryptlen);
 
 out:
        return err;