xen/events: drop negativity check of unsigned parameter

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80531
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index c919d3d..5b5c5ff 100644 (file)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -246,7 +246,7 @@ static void xen_irq_info_cleanup(struct irq_info *info)
  */
 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;