arm: add set_handle_irq() to register the parent IRQ controller handler function (73171d15) · Commits · 戴 / test

In order to allow irqchip drivers to register their IRQ handling function as the parent IRQ controller handler function, we provide a convenience function. This will avoid poking directly into the global handle_arch_irq variable. Suggested by Arnd Bergmann. Signed-off-by:

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> [Rob Herring: remove warning. 1st one to initialize wins.] Signed-off-by:

Rob Herring <rob.herring@calxeda.com> Acked-by:

Olof Johansson <olof@lixom.net>

arch/arm/include/asm/mach/irq.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ extern int show_fiq_list(struct seq_file *, int);

		#ifdef CONFIG_MULTI_IRQ_HANDLER
		extern void (handle_arch_irq)(struct pt_regs );
		extern void set_handle_irq(void (handle_irq)(struct pt_regs ));
		#endif

		/*

arch/arm/kernel/irq.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -117,6 +117,16 @@ void __init init_IRQ(void)
		machine_desc->init_irq();
		}

		#ifdef CONFIG_MULTI_IRQ_HANDLER
		void __init set_handle_irq(void (handle_irq)(struct pt_regs ))
		{
		if (handle_arch_irq)
		return;

		handle_arch_irq = handle_irq;
		}
		#endif

		#ifdef CONFIG_SPARSE_IRQ
		int __init arch_probe_nr_irqs(void)
		{

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