diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 12d7364..33a5992 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -239,6 +239,7 @@
  * @flags: to initialize i2c_client.flags
  * @addr: stored in i2c_client.addr
  * @platform_data: stored in i2c_client.dev.platform_data
+ * @archdata: copied into i2c_client.dev.archdata
  * @irq: stored in i2c_client.irq
  *
  * I2C doesn't actually support hardware probing, although controllers and
@@ -258,6 +259,7 @@
 	unsigned short	flags;
 	unsigned short	addr;
 	void		*platform_data;
+	struct dev_archdata	*archdata;
 	int		irq;
 };