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-rw-r--r--drivers/gpu/drm/drm_dp_helper.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index e26936309e07..559db96c2f8c 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -516,6 +516,7 @@ EXPORT_SYMBOL(drm_dp_downstream_max_bpc);
/**
* drm_dp_downstream_id() - identify branch device
* @aux: DisplayPort AUX channel
+ * @id: DisplayPort branch device id
*
* Returns branch device id on success or NULL on failure
*/