---
name: "pci_get_class"
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/pci_get_class"
---

# pci\_get\_class(9)

begin or continue searching for a PCI device by class

## NAME

pci\_get\_class - begin or continue searching for a PCI device by class

## SYNOPSIS

**struct pci\_dev \* pci\_get\_class(unsigned int** *class***, struct pci\_dev \*** *from***);**

## ARGUMENTS

*class*

search for a PCI device with this class designation

*from*

Previous PCI device found in search, or **NULL** for new search.

## DESCRIPTION

Iterates through the list of known PCI devices. If a PCI device is found with a matching *class*, the reference count to the device is incremented and a pointer to its device structure is returned. Otherwise, **NULL** is returned. A new search is initiated by passing **NULL** as the *from* argument. Otherwise if *from* is not **NULL**, searches continue from next device on the global list. The reference count for *from* is always decremented if it is not **NULL**.

## COPYRIGHT