x86: use ioapic_read_entry() and ioapic_write_entry()

Remove duplicate code by using ioapic_read_entry() and ioapic_write_entry()
in io_apic_{32,64}.c

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/io_apic_32.c

@@ -1228,7 +1228,6 @@ static void __init setup_IO_APIC_irqs(void)
 {
 	struct IO_APIC_route_entry entry;
 	int apic, pin, idx, irq, first_notcon = 1, vector;
-	unsigned long flags;
 
 	apic_printk(APIC_VERBOSE, KERN_DEBUG "init IO_APIC IRQs\n");
 
@@ -1294,9 +1293,7 @@ static void __init setup_IO_APIC_irqs(void)
 			if (!apic && (irq < 16))
 				disable_8259A_irq(irq);
 		}
-		spin_lock_irqsave(&ioapic_lock, flags);
+		ioapic_write_entry(apic, pin, entry);
-		__ioapic_write_entry(apic, pin, entry);
-		spin_unlock_irqrestore(&ioapic_lock, flags);
 	}
 	}
 
@@ -2760,7 +2757,6 @@ int __init io_apic_get_redir_entries (int ioapic)
 int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int active_high_low)
 {
 	struct IO_APIC_route_entry entry;
-	unsigned long flags;
 
 	if (!IO_APIC_IRQ(irq)) {
 		printk(KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n",
@@ -2801,9 +2797,7 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int a
 	if (!ioapic && (irq < 16))
 		disable_8259A_irq(irq);
 
-	spin_lock_irqsave(&ioapic_lock, flags);
+	ioapic_write_entry(ioapic, pin, entry);
-	__ioapic_write_entry(ioapic, pin, entry);
-	spin_unlock_irqrestore(&ioapic_lock, flags);
 
 	return 0;
 }

arch/x86/kernel/io_apic_64.c

@@ -917,9 +917,8 @@ static void __init setup_IO_APIC_irqs(void)
 static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, int vector)
 {
 	struct IO_APIC_route_entry entry;
-	unsigned long flags;
 
-	memset(&entry,0,sizeof(entry));
+	memset(&entry, 0, sizeof(entry));
 
 	disable_8259A_irq(0);
 
@@ -947,10 +946,7 @@ static void __init setup_ExtINT_IRQ0_pin(unsigned int apic, unsigned int pin, in
 	/*
 	 * Add it to the IO-APIC irq-routing table:
 	 */
-	spin_lock_irqsave(&ioapic_lock, flags);
+	ioapic_write_entry(apic, pin, entry);
-	io_apic_write(apic, 0x11+2*pin, *(((int *)&entry)+1));
-	io_apic_write(apic, 0x10+2*pin, *(((int *)&entry)+0));
-	spin_unlock_irqrestore(&ioapic_lock, flags);
 
 	enable_8259A_irq(0);
 }
@@ -1611,17 +1607,14 @@ static inline void unlock_ExtINT_logic(void)
 	int apic, pin, i;
 	struct IO_APIC_route_entry entry0, entry1;
 	unsigned char save_control, save_freq_select;
-	unsigned long flags;
 
 	pin  = find_isa_irq_pin(8, mp_INT);
 	apic = find_isa_irq_apic(8, mp_INT);
 	if (pin == -1)
 		return;
 
-	spin_lock_irqsave(&ioapic_lock, flags);
+	entry0 = ioapic_read_entry(apic, pin);
-	*(((int *)&entry0) + 1) = io_apic_read(apic, 0x11 + 2 * pin);
+
-	*(((int *)&entry0) + 0) = io_apic_read(apic, 0x10 + 2 * pin);
-	spin_unlock_irqrestore(&ioapic_lock, flags);
 	clear_IO_APIC_pin(apic, pin);
 
 	memset(&entry1, 0, sizeof(entry1));
@@ -1634,10 +1627,7 @@ static inline void unlock_ExtINT_logic(void)
 	entry1.trigger = 0;
 	entry1.vector = 0;
 
-	spin_lock_irqsave(&ioapic_lock, flags);
+	ioapic_write_entry(apic, pin, entry1);
-	io_apic_write(apic, 0x11 + 2 * pin, *(((int *)&entry1) + 1));
-	io_apic_write(apic, 0x10 + 2 * pin, *(((int *)&entry1) + 0));
-	spin_unlock_irqrestore(&ioapic_lock, flags);
 
 	save_control = CMOS_READ(RTC_CONTROL);
 	save_freq_select = CMOS_READ(RTC_FREQ_SELECT);
@@ -1656,10 +1646,7 @@ static inline void unlock_ExtINT_logic(void)
 	CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
 	clear_IO_APIC_pin(apic, pin);
 
-	spin_lock_irqsave(&ioapic_lock, flags);
+	ioapic_write_entry(apic, pin, entry0);
-	io_apic_write(apic, 0x11 + 2 * pin, *(((int *)&entry0) + 1));
-	io_apic_write(apic, 0x10 + 2 * pin, *(((int *)&entry0) + 0));
-	spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
 /*