linux-kernel - Re: [PATCH] restore libata build on frv

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Message-Id: <1159302069.3309.46.camel@pmac.infradead.org>
Date:	Tue, 26 Sep 2006 21:21:09 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	Jeff Garzik <jgarzik@...ox.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	David Howells <dhowells@...hat.com>,
	Al Viro <viro@....linux.org.uk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] restore libata build on frv

On Tue, 2006-09-26 at 09:15 -0700, Linus Torvalds wrote:
> That NO_IRQ thing should be zero, and any architecture that thinks that 
> zero is a valid IRQ just needs to fix its own irq mapping so that the 
> "cookie" doesn't work.

> The thing is, it's zero. Get over it. 

Signed-off-by: David Woodhouse <dwmw2@...radead.org>

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 92be519..0cdf8ad 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -219,7 +219,7 @@ int setup_irq(unsigned int irq, struct i
 	unsigned long flags;
 	int shared = 0;
 
-	if (irq >= NR_IRQS)
+	if (!irq || irq >= NR_IRQS)
 		return -EINVAL;
 
 	if (desc->chip == &no_irq_chip)

-- 
dwmw2

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