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Diffstat (limited to 'arch/s390/crypto/aes_s390.c')
-rw-r--r--arch/s390/crypto/aes_s390.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 2a245b55bb7..fd104db9cea 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -818,6 +818,9 @@ static int ctr_aes_crypt(struct blkcipher_desc *desc, long func,
else
memcpy(walk->iv, ctrptr, AES_BLOCK_SIZE);
spin_unlock(&ctrblk_lock);
+ } else {
+ if (!nbytes)
+ memcpy(walk->iv, ctrptr, AES_BLOCK_SIZE);
}
/*
* final block may be < AES_BLOCK_SIZE, copy only nbytes