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Date: Sat, 15 Apr 2017 11:54:50 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: David Howells <dhowells@redhat.com>
cc: LKML <linux-kernel@vger.kernel.org>, gnomes@lxorguk.ukuu.org.uk,
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        Andres Salomon <dilinger@queued.net>
Subject: Re: [PATCH 06/38] Annotate hardware config module parameters in
 drivers/clocksource/
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References: <alpine.DEB.2.20.1704150746530.2327@nanos> <alpine.DEB.2.20.1704142021320.2327@nanos> <149141141298.29162.5612793122429261720.stgit@warthog.procyon.org.uk> <149141145858.29162.13072730133817038218.stgit@warthog.procyon.org.uk>
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On Sat, 15 Apr 2017, David Howells wrote:
> 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.

Thanks,

	tglx

From mboxrd@z Thu Jan  1 00:00:00 1970
From: tglx@linutronix.de (Thomas Gleixner)
Date: Sat, 15 Apr 2017 11:54:50 +0200 (CEST)
Subject: [PATCH 06/38] Annotate hardware config module parameters in
	drivers/clocksource/
In-Reply-To: <15283.1492235470@warthog.procyon.org.uk>
References: <alpine.DEB.2.20.1704150746530.2327@nanos>
	<alpine.DEB.2.20.1704142021320.2327@nanos>
	<149141141298.29162.5612793122429261720.stgit@warthog.procyon.org.uk>
	<149141145858.29162.13072730133817038218.stgit@warthog.procyon.org.uk>
	<12228.1492210765@warthog.procyon.org.uk>
	<15283.1492235470@warthog.procyon.org.uk>
Message-ID: <alpine.DEB.2.20.1704151153280.2327@nanos>
To: linux-security-module@vger.kernel.org
List-Id: linux-security-module.vger.kernel.org

On Sat, 15 Apr 2017, David Howells wrote:
> 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.

Thanks,

	tglx
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