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NAME

       mpc85xx_rio_doorbell_init - MPC85xx doorbell interface init

SYNOPSIS

       int mpc85xx_rio_doorbell_init  (struct rio_mport * mport);

ARGUMENTS

       mport  Master port implementing the inbound doorbell unit

DESCRIPTION

       Initializes  doorbell unit hardware and inbound DMA buffer ring. Called
       from mpc85xx_rio_setup. Returns 0 on success or -ENOMEM on failure.

AUTHOR

       Matt Porter <mporter@kernel.crashing.org> <mporter@mvista.com>.