rio_chk_dev_route
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## Name

rio_chk_dev_route — Validate route to the specified device.

## Synopsis

`int rio_chk_dev_route (` | struct rio_dev * rdev,
| struct rio_dev ** nrdev,
| int * npnum`)`;

## Arguments

`rdev`

  RIO device failed to respond

`nrdev`

  Last active device on the route to rdev

`npnum`

  nrdev's port number on the route to rdev

## Description

Follows a route to the specified RIO device to determine the last available device (and corresponding RIO port) on the route.

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