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Commit 7c6357da authored by Ahmed S. Darwish's avatar Ahmed S. Darwish Committed by Ingo Molnar
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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: default avatarAhmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 3f85d63e

arch/x86/kernel/i8259_32.c

+6 −19
Original line number Diff line number Diff line
@@ -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:

	 */

	for (i = 0; i < 16; i++) {

		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;

		}

	}

}