---
name: "ata_unpack_xfermask"
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/ata_unpack_xfermask"
---

# ata\_unpack\_xfermask(9)

Unpack xfer\_mask into pio, mwdma and udma masks

## NAME

ata\_unpack\_xfermask - Unpack xfer\_mask into pio, mwdma and udma masks

## SYNOPSIS

**void ata\_unpack\_xfermask(unsigned long** *xfer\_mask***, unsigned long \*** *pio\_mask***, unsigned long \*** *mwdma\_mask***, unsigned long \*** *udma\_mask***);**

## ARGUMENTS

*xfer\_mask*

xfer\_mask to unpack

*pio\_mask*

resulting pio\_mask

*mwdma\_mask*

resulting mwdma\_mask

*udma\_mask*

resulting udma\_mask

## DESCRIPTION

Unpack *xfer\_mask* into *pio\_mask*, *mwdma\_mask* and *udma\_mask*. Any NULL destination masks will be ignored.

## AUTHOR

**Jeff Garzik**

Author.

## COPYRIGHT