linux-kernel - Re: Userspace I/O driver core

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Message-Id: <200612141237.16535.hjk@linutronix.de>
Date:	Thu, 14 Dec 2006 12:37:16 +0100
From:	Hans-Jürgen Koch <hjk@...utronix.de>
To:	Alan <alan@...rguk.ukuu.org.uk>
Cc:	tglx@...utronix.de, Greg KH <greg@...ah.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Userspace I/O driver core

Am Donnerstag, 14. Dezember 2006 12:39 schrieb Alan:
> On Thu, 14 Dec 2006 12:22:16 +0100
> Thomas Gleixner <tglx@...utronix.de> wrote:
> 
> > On Thu, 2006-12-14 at 10:52 +0000, Alan wrote:
> > > Might be kind of hairy given uio_read() doesn't even return from the
> > > kernel. 
> > 
> > We probably talk about different code here, right ? The one, I'm looking
> > at returns on each interrupt event.
> 
> The patch Greg posted up has no return inside the while loop.
> 

There are three breaks in that while loop, the first makes it return as 
soon as an interrupt occurs.

Hans
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