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arm: add set_handle_irq() to register the parent IRQ controller handler function

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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>
This commit is contained in:
Thomas Petazzoni 2012-11-20 23:00:53 +01:00 committed by Rob Herring
parent f6e916b820
commit 73171d1587
2 changed files with 11 additions and 0 deletions
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1
arch/arm/include/asm/mach/irq.h
View File

@ -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
/*

10
arch/arm/kernel/irq.c
View File

@ -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)
{