diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 8dc91d075b6bf74a670954275ab08dd0f9d9ddb6..6285d880a64cc42bcb526d72049444740051a1e4 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1471,7 +1471,7 @@ static void __init setup_ioapic_ids_from_mpc_nocheck(void)
 	 * This is broken; anything with a real cpu count has to
 	 * circumvent this idiocy regardless.
 	 */
-	apic->ioapic_phys_id_map(&phys_cpu_present_map, &phys_id_present_map);
+	phys_id_present_map = phys_cpu_present_map;
 
 	/*
 	 * Set the IOAPIC ID to the value stored in the MPC table.
@@ -1496,8 +1496,7 @@ static void __init setup_ioapic_ids_from_mpc_nocheck(void)
 		 * system must have a unique ID or we get lots of nice
 		 * 'stuck on smp_invalidate_needed IPI wait' messages.
 		 */
-		if (apic->check_apicid_used(&phys_id_present_map,
-					    mpc_ioapic_id(ioapic_idx))) {
+		if (physid_isset(mpc_ioapic_id(ioapic_idx), phys_id_present_map)) {
 			pr_err(FW_BUG "IO-APIC#%d ID %d is already used!...\n",
 			       ioapic_idx, mpc_ioapic_id(ioapic_idx));
 			for (i = 0; i < broadcast_id; i++)