---
name: "request_dma"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/request_dma"
---

# request\_dma(9)

request and reserve a system DMA channel

## NAME

request\_dma - request and reserve a system DMA channel

## SYNOPSIS

**int request\_dma(unsigned int** *dmanr***, const char \*** *device\_id***);**

## ARGUMENTS

*dmanr*

DMA channel number

*device\_id*

reserving device ID string, used in /proc/dma

## COPYRIGHT