x86: use NR_IRQS_LEGACY to replace 16
Impact: cleanup
also could kill platform_legacy_irq
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 1a20e3d..1b82781 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -25,8 +25,6 @@
#include <asm/irq.h>
#include <asm/sections.h>
-#define platform_legacy_irq(irq) ((irq) < 16)
-
/* Interrupt handlers registered during init_IRQ */
extern void apic_timer_interrupt(void);
extern void error_interrupt(void);
@@ -58,7 +56,7 @@
extern void init_8259A(int aeoi);
/* IOAPIC */
-#define IO_APIC_IRQ(x) (((x) >= 16) || ((1<<(x)) & io_apic_irqs))
+#define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1<<(x)) & io_apic_irqs))
extern unsigned long io_apic_irqs;
extern void init_VISWS_APIC_irqs(void);
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 43f95d7..e5be9f3 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -3165,6 +3165,7 @@
device_initcall(ioapic_init_sysfs);
+static int nr_irqs_gsi = NR_IRQS_LEGACY;
/*
* Dynamic irq allocate and deallocation
*/
@@ -3179,11 +3180,11 @@
struct irq_desc *desc_new = NULL;
irq = 0;
+ if (irq_want < nr_irqs_gsi)
+ irq_want = nr_irqs_gsi;
+
spin_lock_irqsave(&vector_lock, flags);
for (new = irq_want; new < nr_irqs; new++) {
- if (platform_legacy_irq(new))
- continue;
-
desc_new = irq_to_desc_alloc_cpu(new, cpu);
if (!desc_new) {
printk(KERN_INFO "can not get irq_desc for %d\n", new);
@@ -3208,7 +3209,6 @@
return irq;
}
-static int nr_irqs_gsi = NR_IRQS_LEGACY;
int create_irq(void)
{
unsigned int irq_want;