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Re: [Xen-devel] [PATCH 09/14] xen: events: Remove redundant check on unsigned variable



On Fri, Nov 16, 2012 at 12:20:41PM +0530, Tushar Behera wrote:
> No need to check whether unsigned variable is less than 0.
> 
> CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

> CC: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
> CC: xen-devel@xxxxxxxxxxxxxxxxxxx
> CC: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Tushar Behera <tushar.behera@xxxxxxxxxx>
> ---
>  drivers/xen/events.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/xen/events.c b/drivers/xen/events.c
> index 4293c57..cadd7d1 100644
> --- a/drivers/xen/events.c
> +++ b/drivers/xen/events.c
> @@ -216,7 +216,7 @@ static void xen_irq_info_pirq_init(unsigned irq,
>   */
>  static unsigned int evtchn_from_irq(unsigned irq)
>  {
> -     if (unlikely(WARN(irq < 0 || irq >= nr_irqs, "Invalid irq %d!\n", irq)))
> +     if (unlikely(WARN(irq >= nr_irqs, "Invalid irq %d!\n", irq)))
>               return 0;
>  
>       return info_for_irq(irq)->evtchn;
> -- 
> 1.7.4.1

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