diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 84b16133554bebf60f4e42c84bc1fd4274c477a8..0806f72102c09d03469c8124b75e699333fca652 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1814,8 +1814,13 @@ static void __init doc_dbg_register(struct mtd_info *floor)
 	struct dentry *root = floor->dbg.dfs_dir;
 	struct docg3 *docg3 = floor->priv;
 
-	if (IS_ERR_OR_NULL(root))
+	if (IS_ERR_OR_NULL(root)) {
+		if (IS_ENABLED(CONFIG_DEBUG_FS) &&
+		    !IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER))
+			dev_warn(floor->dev.parent,
+				 "CONFIG_MTD_PARTITIONED_MASTER must be enabled to expose debugfs stuff\n");
 		return;
+	}
 
 	debugfs_create_file("docg3_flashcontrol", S_IRUSR, root, docg3,
 			    &flashcontrol_fops);
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index 246b4393118e4df5c645b3e4eb338a70958ba4b9..44322a363ba549dd7120138fb2b0f977a09260f5 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -520,11 +520,16 @@ static int nandsim_debugfs_create(struct nandsim *dev)
 	struct dentry *root = nsmtd->dbg.dfs_dir;
 	struct dentry *dent;
 
-	if (!IS_ENABLED(CONFIG_DEBUG_FS))
+	/*
+	 * Just skip debugfs initialization when the debugfs directory is
+	 * missing.
+	 */
+	if (IS_ERR_OR_NULL(root)) {
+		if (IS_ENABLED(CONFIG_DEBUG_FS) &&
+		    !IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER))
+			NS_WARN("CONFIG_MTD_PARTITIONED_MASTER must be enabled to expose debugfs stuff\n");
 		return 0;
-
-	if (IS_ERR_OR_NULL(root))
-		return -1;
+	}
 
 	dent = debugfs_create_file("nandsim_wear_report", S_IRUSR,
 				   root, dev, &dfs_fops);