HelenOS sources

sys_ipc_irq_unsubscribe   61 kernel/generic/include/ipc/sysipc.h extern sys_errno_t sys_ipc_irq_unsubscribe(cap_irq_handle_t);
sys_ipc_irq_unsubscribe  122 kernel/generic/src/syscall/syscall.c 	[SYS_IPC_IRQ_UNSUBSCRIBE] = (syshandler_t) sys_ipc_irq_unsubscribe,