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[PATCH] x86_64 irq: Remove unnecessary irq 0 setup. 

The code in io_apic.c and in i8259.c currently hardcode the same
vector for the timer interrupt so there is no reason for a special
assignment for the timer as the setup for the i8259 already takes care
of this.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Eric W. Biederman 2007-02-23 04:36:25 -07:00 committed by Linus Torvalds
parent dfbffdd81c
commit b93179bdfc
1 changed files with 0 additions and 6 deletions
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6
arch/x86_64/kernel/i8259.c
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@ -519,12 +519,6 @@ void __init init_IRQ(void)
}
#ifdef CONFIG_SMP
/*
* IRQ0 must be given a fixed assignment and initialized,
* because it's used before the IO-APIC is set up.
*/
__get_cpu_var(vector_irq)[FIRST_DEVICE_VECTOR] = 0;
/*
* The reschedule interrupt is a CPU-to-CPU reschedule-helper
* IPI, driven by wakeup.