[PATCH] btt: fix block integrity

[Keith Busch]

From: Keith Busch <kbu...@kernel.org>

bip is NULL before bio_integrity_prep().

Signed-off-by: Keith Busch <kbu...@kernel.org>
---
 drivers/nvdimm/btt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 423dcd1909061..13594fb712186 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1435,8 +1435,8 @@ static int btt_do_bvec(struct btt *btt, struct 
bio_integrity_payload *bip,
 
 static void btt_submit_bio(struct bio *bio)
 {
-       struct bio_integrity_payload *bip = bio_integrity(bio);
        struct btt *btt = bio->bi_bdev->bd_disk->private_data;
+       struct bio_integrity_payload *bip;
        struct bvec_iter iter;
        unsigned long start;
        struct bio_vec bvec;
@@ -1445,6 +1445,7 @@ static void btt_submit_bio(struct bio *bio)
 
        if (!bio_integrity_prep(bio))
                return;
+       bip = bio_integrity(bio);
 
        do_acct = blk_queue_io_stat(bio->bi_bdev->bd_disk->queue);
        if (do_acct)
-- 
2.43.5