---
name: "pci_find_next_ext_capability"
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_find_next_ext_capability"
---

# pci\_find\_next\_ext\_capability(9)

Find an extended capability

## NAME

pci\_find\_next\_ext\_capability - Find an extended capability

## SYNOPSIS

**int pci\_find\_next\_ext\_capability(struct pci\_dev \*** *dev***, int** *start***, int** *cap***);**

## ARGUMENTS

*dev*

PCI device to query

*start*

address at which to start looking (0 to start at beginning of list)

*cap*

capability code

## DESCRIPTION

Returns the address of the next matching extended capability structure within the device's PCI configuration space or 0 if the device does not support it. Some capabilities can occur several times, e.g., the vendor-specific capability, and this provides a way to find them all.

## COPYRIGHT