cpu_intr_disable
no_quiesce = cpu_intr_disable(cp);
int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */
error = cpu_intr_disable(cp);
if (cpu_intr_disable(cp) != 0) {
if (cpu_intr_disable(cpup)) {
if (cpu_intr_disable(cp) != 0) {