}
}
+void ioapic_zap_locks(void)
+{
+ raw_spin_lock_init(&ioapic_lock);
+}
+
__apicdebuginit(void) print_IO_APIC(int ioapic_idx)
{
union IO_APIC_reg_00 reg_00;
{
unsigned int ioapic_idx = attr->ioapic, pin = attr->ioapic_pin;
int ret;
+ struct IO_APIC_route_entry orig_entry;
/* Avoid redundant programming */
if (test_bit(pin, ioapics[ioapic_idx].pin_programmed)) {
- pr_debug("Pin %d-%d already programmed\n",
- mpc_ioapic_id(ioapic_idx), pin);
- return 0;
+ pr_debug("Pin %d-%d already programmed\n", mpc_ioapic_id(ioapic_idx), pin);
+ orig_entry = ioapic_read_entry(attr->ioapic, pin);
+ if (attr->trigger == orig_entry.trigger && attr->polarity == orig_entry.polarity)
+ return 0;
+ return -EBUSY;
}
ret = io_apic_setup_irq_pin(irq, node, attr);
if (!ret)