---
name: "mpc85xx_rio_doorbell_init"
section: "9"
platform: "linux"
package: "linux-manual-2.6.18"
version: "2.6.18.dfsg.1-26etch2"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/mpc85xx_rio_doorbell_init"
---

# mpc85xx\_rio\_doorbell\_init(9)

MPC85xx doorbell interface init

## 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\>

-

  Author.

## COPYRIGHT