ARM: rockchip: fix building without CONFIG_INPUT, CONFIG_CPU_FREQ, CONFIG_FB_ROCKCHIP

[firefly-linux-kernel-4.4.55.git] / crypto / ccm.c

diff --git a/crypto/ccm.c b/crypto/ccm.c
index 499c91717d937bfaba9364a5bcde94988626195c..ed009b77e67d1e99b771834fe55bb1950e3c529c 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;