diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index ebdae6e200c..140d6bad5fc 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1185,7 +1185,7 @@ static void dm_table_set_integrity(struct dm_table *t)
 
 	template_disk = dm_table_get_integrity_disk(t, true);
 	if (template_disk)
-		blk_integrity_register(dm_disk(t->md),
+		(void) blk_integrity_register(dm_disk(t->md),
 				       blk_get_integrity(template_disk));
 	else if (blk_integrity_is_initialized(dm_disk(t->md)))
 		DMWARN("%s: device no longer has a valid integrity profile",
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 41abc6dd481..20ebaa0d2cc 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1057,7 +1057,7 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector,
 	clone->bi_flags |= 1 << BIO_CLONED;
 
 	if (bio_integrity(bio)) {
-		bio_integrity_clone(clone, bio, GFP_NOIO, bs);
+		(void) bio_integrity_clone(clone, bio, GFP_NOIO, bs);
 		bio_integrity_trim(clone,
 				   bio_sector_offset(bio, idx, offset), len);
 	}
@@ -1084,7 +1084,7 @@ static struct bio *clone_bio(struct bio *bio, sector_t sector,
 	clone->bi_flags &= ~(1 << BIO_SEG_VALID);
 
 	if (bio_integrity(bio)) {
-		bio_integrity_clone(clone, bio, GFP_NOIO, bs);
+		(void) bio_integrity_clone(clone, bio, GFP_NOIO, bs);
 
 		if (idx != bio->bi_idx || clone->bi_size < bio->bi_size)
 			bio_integrity_trim(clone,
diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c
index 6fd4ffd042f..56c62a6a910 100644
--- a/kernel/trace/trace_printk.c
+++ b/kernel/trace/trace_printk.c
@@ -49,7 +49,7 @@ static
 void hold_module_trace_bprintk_format(const char **start, const char **end)
 {
 	const char **iter;
-	char *fmt;
+	char *fmt=0;
 
 	mutex_lock(&btrace_mutex);
 	for (iter = start; iter < end; iter++) {