1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index 5de2063e16d3..00f40f051d95 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -417,7 +417,7 @@ static long evtchn_ioctl(struct file *file,
                         break;
 
                 rc = -EINVAL;
-                if (unbind.port >= NR_EVENT_CHANNELS)
+                if (unbind.port >= xen_evtchn_nr_channels())
                         break;
 
                 rc = -ENOTCONN;