diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index c2a32cf95a82a76888810fed16708ea742be2317..06906f6f7f49989d3b7368b462836719a2f48ae5 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -880,6 +880,10 @@ static int check_insn_config_length(struct comedi_insn *insn,
 		if (insn->n == 5)
 			return 0;
 		break;
+	case INSN_CONFIG_DIGITAL_TRIG:
+		if (insn->n == 6)
+			return 0;
+		break;
 		/* by default we allow the insn since we don't have checks for
 		 * all possible cases yet */
 	default: