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Commit 6df8809b authored by Yinghai Lu's avatar Yinghai Lu Committed by Ingo Molnar
Browse files

x86: use dstapic in mp_config_acpi_legacy_irqs 



so we don't get the same value multiple times.

also make mp_config_acpi_legacy_irqs more readable by moving assignments
together.

Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d867e531

arch/x86/kernel/acpi/boot.c

+13 −13
Original line number Diff line number Diff line
@@ -962,8 +962,8 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) 


void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi)

{

	int ioapic = -1;

	int pin = -1;

	int ioapic;

	int pin;



	/*

	 * Convert 'gsi' to 'ioapic.pin'.
@@ -997,8 +997,9 @@ void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) 


void __init mp_config_acpi_legacy_irqs(void)

{

	int i = 0;

	int ioapic = -1;

	int i;

	int ioapic;

	unsigned int dstapic;



#if defined (CONFIG_MCA) || defined (CONFIG_EISA)

	/*
@@ -1023,6 +1024,7 @@ void __init mp_config_acpi_legacy_irqs(void) 
	ioapic = mp_find_ioapic(0);

	if (ioapic < 0)

		return;

	dstapic = mp_ioapics[ioapic].mp_apicid;



	/*

	 * Use the default configuration for the IRQs 0-15.  Unless
@@ -1031,11 +1033,6 @@ void __init mp_config_acpi_legacy_irqs(void) 
	for (i = 0; i < 16; i++) {

		int idx;



		mp_irqs[mp_irq_entries].mp_type = MP_INTSRC;

		mp_irqs[mp_irq_entries].mp_irqflag = 0;	/* Conforming */

		mp_irqs[mp_irq_entries].mp_srcbus = MP_ISA_BUS;

		mp_irqs[mp_irq_entries].mp_dstapic = mp_ioapics[ioapic].mp_apicid;



		for (idx = 0; idx < mp_irq_entries; idx++) {

			struct mp_config_intsrc *irq = mp_irqs + idx;
@@ -1045,9 +1042,8 @@ void __init mp_config_acpi_legacy_irqs(void) 
				break;



			/* Do we already have a mapping for this IOAPIC pin */

			if ((irq->mp_dstapic ==

				mp_irqs[mp_irq_entries].mp_dstapic) &&

			    (irq->mp_dstirq == i))

			if (irq->mp_dstapic == dstapic &&

			    irq->mp_dstirq == i)

				break;

		}
@@ -1056,6 +1052,10 @@ void __init mp_config_acpi_legacy_irqs(void) 
			continue;	/* IRQ already used */

		}



		mp_irqs[mp_irq_entries].mp_type = MP_INTSRC;

		mp_irqs[mp_irq_entries].mp_irqflag = 0;	/* Conforming */

		mp_irqs[mp_irq_entries].mp_srcbus = MP_ISA_BUS;

		mp_irqs[mp_irq_entries].mp_dstapic = dstapic;

		mp_irqs[mp_irq_entries].mp_irqtype = mp_INT;

		mp_irqs[mp_irq_entries].mp_srcbusirq = i; /* Identity mapped */

		mp_irqs[mp_irq_entries].mp_dstirq = i;