linux-kernel - Re: [PATCH] pata_of_platform: fix no irq handling

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Message-Id: <1223940434.8157.283.camel@pasglop>
Date:	Tue, 14 Oct 2008 10:27:14 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	avorontsov@...mvista.com, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Li Yang <leoli@...escale.com>, Jeff Garzik <jgarzik@...ox.com>,
	Wang Jian <lark@...ux.net.cn>
Subject: Re: [PATCH] pata_of_platform: fix no irq handling

On Mon, 2008-10-13 at 15:56 +0900, Tejun Heo wrote:
> Anton Vorontsov wrote:
> > When no irq specified the pata_of_platform fills the irq_res with -1,
> > which is wrong to do for two reasons:
> > 
> > 1. By definition, 'no irq' should be IRQ 0, not some negative integer;
> > 2. pata_platform checks for irq_res.start > 0, but since irq_res.start
> >    is unsigned type, the check will be true for `-1'.
> > 
> > Reported-by: Steven A. Falco <sfalco@...ris.com>
> > Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
> 
> applied to #tj-upstream (will soon be sent upstream)

Hrm... I applied it to powerpc.git too :-) Hopefully the merge will sort
it out !

Cheers,
Ben.


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