[PATCH 2/7] dm vdo: fix sparse 'warning: Using plain integer as NULL pointer'

[Matthew Sakai]

From: Mike Snitzer <snit...@kernel.org>

Signed-off-by: Mike Snitzer <snit...@kernel.org>
Signed-off-by: Susan LeGendre-McGhee <slege...@redhat.com>
Signed-off-by: Matthew Sakai <msa...@redhat.com>
---
 drivers/md/dm-vdo/index.c | 8 ++++----
 drivers/md/dm-vdo/vdo.c   | 3 ++-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/md/dm-vdo/index.c b/drivers/md/dm-vdo/index.c
index e343a973881d..1596f6ba43a5 100644
--- a/drivers/md/dm-vdo/index.c
+++ b/drivers/md/dm-vdo/index.c
@@ -732,18 +732,18 @@ static void close_chapters(void *arg)
 
 static void stop_chapter_writer(struct chapter_writer *writer)
 {
-       struct thread *writer_thread = 0;
+       struct thread *writer_thread = NULL;
 
        uds_lock_mutex(&writer->mutex);
-       if (writer->thread != 0) {
+       if (writer->thread != NULL) {
                writer_thread = writer->thread;
-               writer->thread = 0;
+               writer->thread = NULL;
                writer->stop = true;
                uds_broadcast_cond(&writer->cond);
        }
        uds_unlock_mutex(&writer->mutex);
 
-       if (writer_thread != 0)
+       if (writer_thread != NULL)
                uds_join_threads(writer_thread);
 }
 
diff --git a/drivers/md/dm-vdo/vdo.c b/drivers/md/dm-vdo/vdo.c
index 1ead769f0150..e0eddd4007b8 100644
--- a/drivers/md/dm-vdo/vdo.c
+++ b/drivers/md/dm-vdo/vdo.c
@@ -889,7 +889,8 @@ int vdo_synchronous_flush(struct vdo *vdo)
        int result;
        struct bio bio;
 
-       bio_init(&bio, vdo_get_backing_device(vdo), 0, 0, REQ_OP_WRITE | 
REQ_PREFLUSH);
+       bio_init(&bio, vdo_get_backing_device(vdo), NULL, 0,
+                REQ_OP_WRITE | REQ_PREFLUSH);
        submit_bio_wait(&bio);
        result = blk_status_to_errno(bio.bi_status);
 
-- 
2.42.0