pci_get_subsys (9) - Linux Man Pages

pci_get_subsys: begin or continue searching for a PCI device by vendor/subvendor/device/subdevice id

NAME

pci_get_subsys - begin or continue searching for a PCI device by vendor/subvendor/device/subdevice id

SYNOPSIS

struct pci_dev * pci_get_subsys(unsigned int vendor, unsigned int device, unsigned int ss_vendor, unsigned int ss_device, struct pci_dev from);

ARGUMENTS

vendor

PCI vendor id to match, or PCI_ANY_ID to match all vendor ids

device

PCI device id to match, or PCI_ANY_ID to match all device ids

ss_vendor

PCI subsystem vendor id to match, or PCI_ANY_ID to match all vendor ids

ss_device

PCI subsystem device id to match, or PCI_ANY_ID to match all device ids

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 vendor, device, ss_vendor and ss_device, a pointer to its device structure is returned, and the reference count to the device is incremented. 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.

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