Fix some lint errors

Signed-off-by: Tuomas Katila <[email protected]>

Author: tkatila

cmd/gpu_plugin/gpu_plugin_test.go

@@ -589,7 +589,7 @@ func createBypathTestFiles(t *testing.T, card, root, linkFile string, bypathFile
 			t.Fatal("Couldn't create test drm dir", err)
 		}
 
-		if err := os.WriteFile(devPath, []byte{0}, os.ModePerm); err != nil {
+		if err := os.WriteFile(devPath, []byte{0}, 0o600); err != nil {
 			t.Fatal("Couldn't create card file", err)
 		}
 
@@ -604,7 +604,7 @@ func createBypathTestFiles(t *testing.T, card, root, linkFile string, bypathFile
 		}
 
 		for _, f := range bypathFiles {
-			if err := os.WriteFile(path.Join(byPath, f), []byte{1}, os.ModePerm); err != nil {
+			if err := os.WriteFile(path.Join(byPath, f), []byte{1}, 0o600); err != nil {
 				t.Fatal("WriteFile failed:", path.Join(byPath, f))
 			}
 		}

pkg/idxd/plugin_test.go

@@ -39,7 +39,10 @@ func getFakeDevNodes(devDir, charDevDir, wqName string) ([]pluginapi.DeviceSpec,
 
 	var devNum, queueNum int
 
-	fmt.Sscanf(wqName, "wq%d.%d", &devNum, &queueNum)
+	if _, err := fmt.Sscanf(wqName, "wq%d.%d", &devNum, &queueNum); err != nil {
+		return []pluginapi.DeviceSpec{}, err
+	}
+
 	charDevPath := path.Join(charDevDir, fmt.Sprintf("%d:%d", dsaMajor, devNum*10+queueNum))
 
 	return []pluginapi.DeviceSpec{