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genirq: Query arch for number of early descriptors

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sparse irq sets up NR_IRQS_LEGACY irq descriptors and archs then go
ahead and allocate more.

Use the unused return value of arch_probe_nr_irqs() to let the
architecture return the number of early allocations. Fix up all users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2010-09-27 20:55:03 +02:00
parent aa99ec0f3f
commit b683de2b3c
6 changed files with 16 additions and 12 deletions
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6
arch/arm/kernel/irq.c
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@ -157,10 +157,8 @@ void __init init_IRQ(void)
struct irq_desc *desc;
int irq;
for (irq = 0; irq < nr_irqs; irq++) {
desc = irq_to_desc_alloc_node(irq, 0);
for (irq = 0; irq < nr_irqs; irq++)
desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE;
}
init_arch_irq();
}
@ -169,7 +167,7 @@ void __init init_IRQ(void)
int __init arch_probe_nr_irqs(void)
{
nr_irqs = arch_nr_irqs ? arch_nr_irqs : NR_IRQS;
return 0;
return nr_irqs;
}
#endif