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| PCI_BUS_FIND_CAPABIL(9) | Hardware Interfaces | PCI_BUS_FIND_CAPABIL(9) |
NAME¶
pci_bus_find_capability - query for devices' capabilities
SYNOPSIS¶
int pci_bus_find_capability(struct pci_bus * bus, unsigned int devfn, int cap);
ARGUMENTS¶
struct pci_bus * bus
the PCI bus to query
unsigned int devfn
PCI device to query
int cap
capability code
DESCRIPTION¶
Like pci_find_capability but works for pci devices that do not have a pci_dev structure set up yet.
Returns the address of the requested capability structure within the device's PCI configuration space or 0 in case the device does not support it.
COPYRIGHT¶
| June 2017 | Kernel Hackers Manual 4.11 |