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x86: i8259A: remove redundant irq_descinitialization 

Remove redundant irq_desc[NR_IRQS] element initialization in
init_ISA_irqs(). irq_desc[NR_IRQS] is already statically
initialized with the same values in kernel/irq/handle.c .

besides the clean-up value this also saves some space:

      text    data     bss     dec     hex filename
      1389     356      14    1759     6df i8259_32.o.before
      1325     356      14    1695     69f i8259_32.o.after

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ahmed S. Darwish 2008-02-18 00:59:54 +02:00 committed by Ingo Molnar
parent 3f85d63ea4
commit 7c6357da11
1 changed files with 6 additions and 19 deletions
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25
arch/x86/kernel/i8259_32.c
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@ -26,8 +26,6 @@
* present in the majority of PC/AT boxes.
* plus some generic x86 specific things if generic specifics makes
* any sense at all.
* this file should become arch/i386/kernel/irq.c when the old irq.c
* moves to arch independent land
*/
static int i8259A_auto_eoi;
@ -362,23 +360,12 @@ void __init init_ISA_irqs (void)
#endif
init_8259A(0);
for (i = 0; i < NR_IRQS; i++) {
irq_desc[i].status = IRQ_DISABLED;
irq_desc[i].action = NULL;
irq_desc[i].depth = 1;
if (i < 16) {
/*
* 16 old-style INTA-cycle interrupts:
*/
set_irq_chip_and_handler_name(i, &i8259A_chip,
handle_level_irq, "XT");
} else {
/*
* 'high' PCI IRQs filled in on demand
*/
irq_desc[i].chip = &no_irq_chip;
}
/*
* 16 old-style INTA-cycle interrupts:
*/
for (i = 0; i < 16; i++) {
set_irq_chip_and_handler_name(i, &i8259A_chip,
handle_level_irq, "XT");
}
}