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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 20:50:05 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:52:29 +0200
commit08678b0841267c1d00d771fe01548d86043d065e (patch)
tree7debb21f9e9a768ced43077f7376797a0c46f8c0 /arch/x86/kernel/irqinit_64.c
parentbfea1238beac9d306eeac081c67de5ca6aec4c7a (diff)
downloadop-kernel-dev-08678b0841267c1d00d771fe01548d86043d065e.zip
op-kernel-dev-08678b0841267c1d00d771fe01548d86043d065e.tar.gz
generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]
add CONFIG_HAVE_SPARSE_IRQ to for use condensed array. Get rid of irq_desc[] array assumptions. Preallocate 32 irq_desc, and irq_desc() will try to get more. ( No change in functionality is expected anywhere, except the odd build failure where we missed a code site or where a crossing commit itroduces new irq_desc[] usage. ) v2: according to Eric, change get_irq_desc() to irq_desc() Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/irqinit_64.c')
-rw-r--r--arch/x86/kernel/irqinit_64.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index 165c5d9..0744b49 100644
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -143,9 +143,11 @@ void __init init_ISA_irqs(void)
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;
+ struct irq_desc *desc = irq_to_desc(i);
+
+ desc->status = IRQ_DISABLED;
+ desc->action = NULL;
+ desc->depth = 1;
if (i < 16) {
/*
@@ -157,7 +159,7 @@ void __init init_ISA_irqs(void)
/*
* 'high' PCI IRQs filled in on demand
*/
- irq_desc[i].chip = &no_irq_chip;
+ desc->chip = &no_irq_chip;
}
}
}
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