diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 51f0574..b55fde5 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -77,6 +77,8 @@
 	int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
 	int (*reg_write)(void *context, unsigned int reg, unsigned int val);
 
+	bool defer_caching;
+
 	u8 read_flag_mask;
 	u8 write_flag_mask;