|BUS_RELEASE_RESOURCE(9)||FreeBSD Kernel Developer's Manual||BUS_RELEASE_RESOURCE(9)|
NAMEbus_release_resource — release resources on a bus
SYNOPSIS#include < sys/param.h>
#include < sys/bus.h>
bus_release_resource( device_t dev, int type, int rid, struct resource *r);
DESCRIPTIONFree 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 types.
- 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 resource, i.e., the resource itself, returned by bus_alloc_resource(9).
RETURN VALUESEINVAL 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, foosoftc->irqres); /* release I/O port resource */ bus_release_resource(dev, SYS_RES_IOPORT, foosoftc->portid, foosoftc->portres);
AUTHORSThis manual page was written by <email@example.com>.
|May 18, 2000||FreeBSD|