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x86/apic: Do not clear nr_irqs_gsi if no legacy irqs

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nr_legacy_irqs is set in probe_nr_irqs_gsi, we should not clear
it after that. Otherwise, the result is that MSI irqs will be
allocated from the wrong range for the systems without legacy
PIC.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jacob Pan 2011-11-10 13:42:21 +00:00 committed by Ingo Molnar
parent cf8ff6b6ab
commit bb84ac2d3a
1 changed files with 1 additions and 3 deletions
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4
arch/x86/kernel/apic/io_apic.c
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@ -193,10 +193,8 @@ int __init arch_early_irq_init(void)
struct irq_cfg *cfg;
int count, node, i;
if (!legacy_pic->nr_legacy_irqs) {
nr_irqs_gsi = 0;
if (!legacy_pic->nr_legacy_irqs)
io_apic_irqs = ~0UL;
}
for (i = 0; i < nr_ioapics; i++) {
ioapics[i].saved_registers =