add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/cobalt/irq.c
..
..
@@ -45,18 +45,20 @@
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 		spurious_interrupt();
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 }
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-static struct irqaction cascade = {
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-	.handler	= no_action,
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-	.name		= "cascade",
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-	.flags		= IRQF_NO_THREAD,
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-};
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-
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 void __init arch_init_irq(void)
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 {
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 	mips_cpu_irq_init();
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 	gt641xx_irq_init();
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 	init_i8259_irqs();
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-	setup_irq(GT641XX_CASCADE_IRQ, &cascade);
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-	setup_irq(I8259_CASCADE_IRQ, &cascade);
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+	if (request_irq(GT641XX_CASCADE_IRQ, no_action, IRQF_NO_THREAD,
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+			"cascade", NULL)) {
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+		pr_err("Failed to request irq %d (cascade)\n",
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+		       GT641XX_CASCADE_IRQ);
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+	}
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+	if (request_irq(I8259_CASCADE_IRQ, no_action, IRQF_NO_THREAD,
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+			"cascade", NULL)) {
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+		pr_err("Failed to request irq %d (cascade)\n",
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+		       I8259_CASCADE_IRQ);
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+	}
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 }