PCI_FIND_PARENT_RESO(9) Hardware Interfaces PCI_FIND_PARENT_RESO(9)NAME
pci_find_parent_resource - return resource region of parent bus of given region
struct resource * pci_find_parent_resource(const struct pci_dev * dev, struct resource * res);
PCI device structure contains resources to be searched
child resource record for which parent is sought
For given resource region of given device, return the resource region of parent bus the given region is contained in or where it should be
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 PCI_FIND_PARENT_RESO(9)
Check Out this Related Man Page
BUS_RELEASE_RESOURCE(9) BSD Kernel Developer's Manual BUS_RELEASE_RESOURCE(9)NAME
bus_release_resource -- release resources on a bus
bus_release_resource(device_t dev, int type, int rid, struct resource *r);
Free a resource allocated by bus_alloc_resource(9). The resource must not be in use on release, i.e., call an appropriate function before
(e.g. bus_teardown_intr(9) for IRQs).
dev is the device that owns the resource.
type is the type of resource that is released. It must be of the same type you allocated it as before. See bus_alloc_resource(9) for valid
rid is the resource ID of the resource. The rid value must be the same as the one returned by bus_alloc_resource(9).
r is the pointer to struct res, i.e., the resource itself, returned by bus_alloc_resource(9).
EINVAL is returned, if the device dev has no parent, 0 otherwise. The kernel will panic, if it cannot release the resource.
/* deactivate IRQ */
bus_teardown_intr(dev, foosoftc->irqres, foosoftc->irqid);
/* release IRQ resource */
bus_release_resource(dev, SYS_RES_IRQ, foosoftc->irqid,
/* release I/O port resource */
bus_release_resource(dev, SYS_RES_IOPORT, foosoftc->portid,
SEE ALSO bus_alloc_resource(9), device(9), driver(9)AUTHORS
This manual page was written by Alexander Langer <firstname.lastname@example.org>.
BSD May 18, 2000 BSD
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