Listing 2. Kconfig Entries for the Coin Driver

#
# Character device configuration
#

menu "Character devices"

config COIN
       tristate "Coin char device support"
       help
         Say Y here if you want to add support for the
         coin char device.

         If unsure, say N.

         To compile this driver as a module, choose M here:
         the module will be called coin.

config COIN_STAT
        bool "flipping statistics"
        depends on COIN
       help
        Say Y here if you want to enable statistics about
        the coin char device.