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Re: [PATCH 2/6] MIPS: ip27-timer: fix unsigned irq < 0

To: Roel Kluin <12o3l@tiscali.nl>
Subject: Re: [PATCH 2/6] MIPS: ip27-timer: fix unsigned irq < 0
From: tsbogend@alpha.franken.de (Thomas Bogendoerfer)
Date: Wed, 16 Apr 2008 11:15:54 +0200
Cc: ralf@linux-mips.org, linux-mips@linux-mips.org, lkml <linux-kernel@vger.kernel.org>
In-reply-to: <480559DC.2060807@tiscali.nl>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <480559DC.2060807@tiscali.nl>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.13 (2006-08-11)
On Wed, Apr 16, 2008 at 03:43:56AM +0200, Roel Kluin wrote:
> irq is unsigned, cast to signed to evaluate the allocate_irqno() return value,
>     
> Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
> ---   
> diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
> index 25d3baf..3c08afd 100644
> --- a/arch/mips/sgi-ip27/ip27-timer.c
> +++ b/arch/mips/sgi-ip27/ip27-timer.c
> @@ -222,19 +222,19 @@ static void __init hub_rt_clock_event_global_init(void)
>       unsigned int irq;
>  
>       do {
>               smp_wmb();
>               irq = rt_timer_irq;
>               if (irq)
>                       break;
>  
>               irq = allocate_irqno();
> -             if (irq < 0)
> +             if ((int) irq < 0)

Why don't you just make irq and rt_timer_irq an int ?

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessary a
good idea.                                                [ RFC1925, 2.3 ]

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