3 files changed, 10 insertions, 11 deletions

diff --git a/drivers/base/regmap/regcache-maple.c b/drivers/base/regmap/regcache-maple.c
index e42433404854..f0df2da6d522 100644
--- a/drivers/base/regmap/regcache-maple.c
+++ b/drivers/base/regmap/regcache-maple.c
@@ -132,9 +132,9 @@ static int regcache_maple_drop(struct regmap *map, unsigned int min,
 			lower_index = mas.index;
 			lower_last = min -1;
 
-			lower = kmemdup(entry, ((min - mas.index) *
-						sizeof(unsigned long)),
-					map->alloc_flags);
+			lower = kmemdup_array(entry,
+					      min - mas.index, sizeof(*lower),
+					      map->alloc_flags);
 			if (!lower) {
 				ret = -ENOMEM;
 				goto out_unlocked;
@@ -145,10 +145,9 @@ static int regcache_maple_drop(struct regmap *map, unsigned int min,
 			upper_index = max + 1;
 			upper_last = mas.last;
 
-			upper = kmemdup(&entry[max - mas.index + 1],
-					((mas.last - max) *
-					 sizeof(unsigned long)),
-					map->alloc_flags);
+			upper = kmemdup_array(&entry[max - mas.index + 1],
+					      mas.last - max, sizeof(*upper),
+					      map->alloc_flags);
 			if (!upper) {
 				ret = -ENOMEM;
 				goto out_unlocked;
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 2e41cb12b8e2..7ec1ec605335 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -170,8 +170,8 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
 	 * a copy of it.
 	 */
 	if (config->reg_defaults) {
-		tmp_buf = kmemdup(config->reg_defaults, map->num_reg_defaults *
-				  sizeof(struct reg_default), GFP_KERNEL);
+		tmp_buf = kmemdup_array(config->reg_defaults, map->num_reg_defaults,
+					sizeof(*map->reg_defaults), GFP_KERNEL);
 		if (!tmp_buf)
 			return -ENOMEM;
 		map->reg_defaults = tmp_buf;
@@ -407,7 +407,7 @@ out:
 	 * have gone out of sync, force writes of all the paging
 	 * registers.
 	 */
-	rb_for_each(node, 0, &map->range_tree, rbtree_all) {
+	rb_for_each(node, NULL, &map->range_tree, rbtree_all) {
 		struct regmap_range_node *this =
 			rb_entry(node, struct regmap_range_node, node);
 
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 0a34dd3c4f38..88c02b71b2ee 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2347,7 +2347,7 @@ out:
 	} else {
 		void *wval;
 
-		wval = kmemdup(val, val_count * val_bytes, map->alloc_flags);
+		wval = kmemdup_array(val, val_count, val_bytes, map->alloc_flags);
 		if (!wval)
 			return -ENOMEM;