rio_request_dma
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## Name

rio_request_dma — request RapidIO capable DMA channel that supports specified target RapidIO device.

## Synopsis

`struct dma_chan * rio_request_dma (` | struct rio_dev * rdev`)`;

## Arguments

`rdev`

  RIO device control structure

## Description

Returns pointer to allocated DMA channel or NULL if failed.

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