[PATCH] [crypto] s390 AES: Copy the IV back for chaining support

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This is required for one or two crypto users in tree which
chain the IV.

Signed-off-by: Sebastian Siewior <sebastian@xxxxxxxxxxxxx>
---
 arch/s390/crypto/aes_s390.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 8524611..a2eae49 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -242,6 +242,9 @@ static int fallback_blk_dec(struct blkcipher_desc *desc,
 
 	ret = crypto_blkcipher_decrypt(desc, dst, src, nbytes);
 
+	memcpy(desc->info, crypto_blkcipher_crt(sctx->fallback.blk)->iv,
+		AES_BLOCK_SIZE);
+
 	desc->tfm = tfm;
 	return ret;
 }
@@ -262,6 +265,9 @@ static int fallback_blk_enc(struct blkcipher_desc *desc,
 
 	ret = crypto_blkcipher_encrypt(desc, dst, src, nbytes);
 
+	memcpy(desc->info, crypto_blkcipher_crt(sctx->fallback.blk)->iv,
+		AES_BLOCK_SIZE);
+
 	desc->tfm = tfm;
 	return ret;
 }
-- 
1.5.3.4

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