[Xen-devel] Re: [PATCH] xen: events: fix error checks in bind_*_to_irqhandler()

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Wed, Mar 30, 2011 at 09:14:26PM +0200, Nicolas Kaiser wrote:
> Checking 'irq < 0' doesn't work when 'irq' is unsigned.
> 
> The assigned bind_evtchn_to_irq() and bind_virq_to_irq()
> return int, so using int appears appropriate.

Whoops. Good check. Will have it queue up for rc2.

Will fix up the bind_virq_to_irqhandler case as well.
> 
> Signed-off-by: Nicolas Kaiser <nikai@xxxxxxxxx>
> ---
>  drivers/xen/events.c |    6 ++----
>  1 files changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/xen/events.c b/drivers/xen/events.c
> index 036343b..589f0a5 100644
> --- a/drivers/xen/events.c
> +++ b/drivers/xen/events.c
> @@ -912,8 +912,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
>                             unsigned long irqflags,
>                             const char *devname, void *dev_id)
>  {
> -     unsigned int irq;
> -     int retval;
> +     int irq, retval;
>  
>       irq = bind_evtchn_to_irq(evtchn);
>       if (irq < 0)
> @@ -955,8 +954,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned 
> int cpu,
>                           irq_handler_t handler,
>                           unsigned long irqflags, const char *devname, void 
> *dev_id)
>  {
> -     unsigned int irq;
> -     int retval;
> +     int irq, retval;
>  
>       irq = bind_virq_to_irq(virq, cpu);
>       if (irq < 0)
> -- 
> 1.7.3.4
> --
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