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Re: [Xen-devel] [PATCH for-4.5 6/8] xen/arm: IRQ: Add lock contrainst for gic_irq_{startup, shutdown}

On Wed, 2014-02-19 at 14:35 +0000, Julien Grall wrote:

> >> -static void gic_irq_enable(struct irq_desc *desc)
> >> +static unsigned int gic_irq_startup(struct irq_desc *desc)
> > 
> > unsigned? What are the error codes here going to be?
> This is the return type requested by hw_interrupt_type.startup.
> It seems that the return is never checked (even in x86 code). Maybe we
> should change the prototype of hw_interrupt_type.startup.

Worth investigating. I wonder if someone thought this might return the
resulting interrupt number (those are normally unsigned int I think) or
if it actually did used to etc.


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