dm space map metadata: fix sm_bootstrap_get_nr_blocks()

This function isn't right and it causes a static checker warning: drivers/md/dm-thin.c:3016 maybe_resize_data_dev() error: potentially using uninitialized 'sb_data_size'. It should set "*count" and return zero on success the same as the sm_metadata_get_nr_blocks() function does earlier. Fixes: 3241b1d ('dm: add persistent data library') Signed-off-by: Dan Carpenter <[email protected]> Acked-by: Joe Thornber <[email protected]> Signed-off-by: Mike Snitzer <[email protected]>
Fisiu · Dec 1, 2014 · c1c6156 · c1c6156
1 parent 445559c
commit c1c6156
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
@@ -564,7 +564,9 @@ static int sm_bootstrap_get_nr_blocks(struct dm_space_map *sm, dm_block_t *count
 {
 	struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
 
-	return smm->ll.nr_blocks;
+	*count = smm->ll.nr_blocks;
+
+	return 0;
 }
 
 static int sm_bootstrap_get_nr_free(struct dm_space_map *sm, dm_block_t *count)