[BLOCK] dm-crypt: Align IV to u64 for essiv

This patch makes the IV u64-aligned since essiv does a u64 store to it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 6dbaeee48ced..facf859b9b87 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -272,7 +272,7 @@ crypt_convert_scatterlist(struct crypt_config *cc, struct scatterlist *out,
                           struct scatterlist *in, unsigned int length,
                           int write, sector_t sector)
 {
-        u8 iv[cc->iv_size];
+        u8 iv[cc->iv_size] __attribute__ ((aligned(__alignof__(u64))));
         struct blkcipher_desc desc = {
                 .tfm = cc->tfm,
                 .info = iv,