1 files changed, 4 insertions, 1 deletions
diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
index 9f64d5c7107b..7ca1f030d209 100644
--- a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
+++ b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
@@ -24,8 +24,11 @@ function check {
     local code=$1
     local str=$2
     local exp_str=$3
+    local exp_fail=$4
 
-    if [ $code -ne 0 ]; then
+    [ -z "$exp_fail" ] && cop="-ne" || cop="-eq"
+
+    if [ $code $cop 0 ]; then
 	((num_errors++))
 	return
     fi