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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>
This commit is contained in:
Maciej W. Rozycki 2008-05-27 21:19:40 +01:00 committed by Ingo Molnar
parent f7633ce55b
commit 24742ece8e
2 changed files with 2 additions and 0 deletions
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1
arch/x86/kernel/io_apic_32.c
View File

@ -2185,6 +2185,7 @@ static inline void __init check_timer(void)
* legacy devices should be connected to IO APIC #0
*/
setup_timer_IRQ0_pin(apic2, pin2, vector);
unmask_IO_APIC_irq(0);
enable_8259A_irq(0);
if (timer_irq_works()) {
printk("works.\n");

1
arch/x86/kernel/io_apic_64.c
View File

@ -1691,6 +1691,7 @@ static inline void __init check_timer(void)
* legacy devices should be connected to IO APIC #0
*/
setup_timer_IRQ0_pin(apic2, pin2, cfg->vector);
unmask_IO_APIC_irq(0);
enable_8259A_irq(0);
if (timer_irq_works()) {
apic_printk(APIC_VERBOSE," works.\n");