Re: [PATCH 06/38] Annotate hardware config module parameters in drivers/clocksource/

[David Howells]

Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> > > > Btw, is it possible to use IRQ grants to prevent a device that has limited
> > > > IRQ options from being drivable?
> > > 
> > > What do you mean with 'IRQ grants' ?
> > 
> > request_irq().
> 
> I still can't parse the sentence above. If request_irq() fails the device
> initialization fails. If you request the wrong irq then request_irq() might
> succeed but the device won't work.

I was talking about having using a driver to make request_irq() grant an irq
to that driver so that another driver can't bind to its device because all its
irq options are taken and the irqs can't be shared.

David