From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH x86] i8259A_32: Remove redundant irq_desc[NR_IRQ] initialization
Date: Mon, 18 Feb 2008 00:59:54 +0200 [thread overview]
Message-ID: <20080217225954.GA3020@ubuntu> (raw)
Hi all,
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 .
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
---
i8259_32.c | 26 ++++++--------------------
1 file changed, 6 insertions(+), 20 deletions(-)
Tested only on a UP machine with an i8259A PIC.
diff --git a/arch/x86/kernel/i8259_32.c b/arch/x86/kernel/i8259_32.c
index 2d25b77..0fea87d 100644
--- a/arch/x86/kernel/i8259_32.c
+++ b/arch/x86/kernel/i8259_32.c
@@ -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;
@@ -362,24 +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");
}
/* Overridden in paravirt.c */
Regards,
--
Ahmed S. Darwish
Homepage: http://darwish.07.googlepages.com
Blog: http://darwish-07.blogspot.com
next reply other threads:[~2008-02-17 23:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-17 22:59 Ahmed S. Darwish [this message]
2008-02-18 2:35 ` [PATCH x86] i8259A_32: Remove redundant irq_desc[NR_IRQ] initialization Ingo Molnar
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