x86: I/O APIC: unmask the second-chance timer interrupt
Unmask the timer interrupt line set up in the through-8259A mode explicitly after setup_timer_IRQ0_pin() has set up the I/O APIC interrupt redirection entry to let the two operations be unbound from each other. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -2185,6 +2185,7 @@ static inline void __init check_timer(void)
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* legacy devices should be connected to IO APIC #0
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* legacy devices should be connected to IO APIC #0
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*/
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*/
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setup_timer_IRQ0_pin(apic2, pin2, vector);
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setup_timer_IRQ0_pin(apic2, pin2, vector);
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unmask_IO_APIC_irq(0);
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enable_8259A_irq(0);
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enable_8259A_irq(0);
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if (timer_irq_works()) {
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if (timer_irq_works()) {
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printk("works.\n");
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printk("works.\n");
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@ -1691,6 +1691,7 @@ static inline void __init check_timer(void)
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* legacy devices should be connected to IO APIC #0
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* legacy devices should be connected to IO APIC #0
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*/
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*/
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setup_timer_IRQ0_pin(apic2, pin2, cfg->vector);
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setup_timer_IRQ0_pin(apic2, pin2, cfg->vector);
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unmask_IO_APIC_irq(0);
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enable_8259A_irq(0);
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enable_8259A_irq(0);
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if (timer_irq_works()) {
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if (timer_irq_works()) {
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apic_printk(APIC_VERBOSE," works.\n");
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apic_printk(APIC_VERBOSE," works.\n");
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