Now x86 only support sparseirq path, for that path, calling path like:
early_irq_init
==> arch_probe_nr_irqs : return legacy irq number
==> alloc_desc for legacy irqs and set bits in allocated_irqs
==> arch_early_irq_init
==> irq_reserve_irqs : set bits again
so we can kill one irq_reserve_irqs calling.
Signed-off-by: Yinghai Lu <ying...@kernel.org>
---
arch/x86/kernel/apic/io_apic.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 6ad4658..398f9c4 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -206,9 +206,6 @@ int __init arch_early_irq_init(void)
count = ARRAY_SIZE(irq_cfgx);
node = cpu_to_node(0);
- /* Make sure the legacy interrupts are marked in the bitmap */
- irq_reserve_irqs(0, legacy_pic->nr_legacy_irqs);
-
for (i = 0; i < count; i++) {
irq_set_chip_data(i, &cfg[i]);
zalloc_cpumask_var_node(&cfg[i].domain, GFP_KERNEL, node);
--
1.8.4.5
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