On Monday 05 November 2012, Rob Herring wrote:
> But this should work:
>
> if (!handle_arch_irq)
> handle_arch_irq = fpga_handle_irq;
>
> As long as the primary controller is always initialized first, this will
> work. This is guaranteed by DT of_irq_init, and you will probably have
> other problems if that wasn't the case for non-DT.
How about adding a top-level function in arch/arm that does the assignment
and hides the handle_arch_irq variable:
void set_handle_irq(void (*handle_irq)(struct pt_regs *))
{
if (WARN_ON(handle_arch_irq))
return;
handle_arch_irq = handle_irq;
}
EXPORT_SYMBOL_GPL(set_handle_irq);
Hmm, maybe putting the top-level handler into a loadable module is a bit
far-fetched, but one can hope ;-)
Arnd
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