diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index e495117735e1..cf02dbca5458 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -550,8 +550,8 @@ EXPORT_SYMBOL_GPL(drm_of_lvds_get_data_mapping);
  *
  * Return:
  * * min..max - positive integer count of "data-lanes" elements
- * * -ve - the "data-lanes" property is missing or invalid
- * * -EINVAL - the "data-lanes" property is unsupported
+ * * -ENODATA - the property does not have a value.
+ * * -EINVAL - the "data-lanes" property is missing or invalid
  */
 int drm_of_get_data_lanes_count(const struct device_node *endpoint,
 				const unsigned int min, const unsigned int max)
@@ -582,8 +582,8 @@ EXPORT_SYMBOL_GPL(drm_of_get_data_lanes_count);
  *
  * Return:
  * * min..max - positive integer count of "data-lanes" elements
- * * -EINVAL - the "data-mapping" property is unsupported
- * * -ENODEV - the "data-mapping" property is missing
+ * * -ENODATA - the property does not have a value.
+ * * -EINVAL - the "data-lanes" property is missing or invalid
  */
 int drm_of_get_data_lanes_count_ep(const struct device_node *port,
 				   int port_reg, int reg,