Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 06/38] Annotate hardware config module parameters in drivers/clocksource/ | Date | Tue, 18 Apr 2017 13:43:06 +0100 |
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Thomas Gleixner <tglx@linutronix.de> 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
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