-This module is a very simple fake I2C/SMBus driver. It implements three
-types of SMBus commands: write quick, (r/w) byte data, and (r/w) word data.
+This module is a very simple fake I2C/SMBus driver. It implements four
+types of SMBus commands: write quick, (r/w) byte, (r/w) byte data, and
+(r/w) word data.
+
+You need to provide a chip address as a module parameter when loading
+this driver, which will then only react to SMBus commands to this address.