diff --git a/drivers/cdx/cdx.c b/drivers/cdx/cdx.c
index d2cad4c670a0..a61834bc84a9 100644
--- a/drivers/cdx/cdx.c
+++ b/drivers/cdx/cdx.c
@@ -365,8 +365,12 @@ static ssize_t driver_override_show(struct device *dev,
 				    struct device_attribute *attr, char *buf)
 {
 	struct cdx_device *cdx_dev = to_cdx_device(dev);
+	ssize_t len;
 
-	return sysfs_emit(buf, "%s\n", cdx_dev->driver_override);
+	device_lock(dev);
+	len = sysfs_emit(buf, "%s\n", cdx_dev->driver_override);
+	device_unlock(dev);
+	return len;
 }
 static DEVICE_ATTR_RW(driver_override);