BUS_RELEASE_RESOURCE(9) Kernel Developer's Manual BUS_RELEASE_RESOURCE(9) NAME bus_release_resource -- release resources on a bus SYNOPSIS #include <sys/param.h> #include <sys/bus.h> #include <machine/bus.h> #include <sys/rman.h> #include <machine/resource.h> int bus_release_resource(device_t dev, struct resource *r); DESCRIPTION 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. r is the pointer to struct resource, i.e., the resource itself, returned by bus_alloc_resource(9). RETURN VALUES EINVAL is returned, if the device dev has no parent, 0 otherwise. The ker- nel will panic, if it cannot release the resource. EXAMPLES /* deactivate IRQ */ bus_teardown_intr(dev, foosoftc->irqres, foosoftc->irqid); /* release IRQ resource */ bus_release_resource(dev, foosoftc->irqres); /* release I/O port resource */ bus_release_resource(dev, foosoftc->portres); SEE ALSO bus_alloc_resource(9), device(9), driver(9) AUTHORS This manual page was written by Alexander Langer <alex@big.endian.de>. FreeBSD 15.1 March 13, 2024 BUS_RELEASE_RESOURCE(9)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHORS
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