diff --git a/block/sed-opal.c b/block/sed-opal.c
index 463873f61e01ea688a56b5f99efd5b30bc953126..c320093c14f1249e81937453adf1323bd3e3674b 100644
--- a/block/sed-opal.c
+++ b/block/sed-opal.c
@@ -487,6 +487,8 @@ static int opal_discovery0_end(struct opal_dev *dev)
 			break;
 		case FC_SINGLEUSER:
 			single_user = check_sum(body->features);
+			if (single_user)
+				dev->flags |= OPAL_FL_SUM_SUPPORTED;
 			break;
 		case FC_GEOMETRY:
 			check_geometry(dev, body);
diff --git a/include/uapi/linux/sed-opal.h b/include/uapi/linux/sed-opal.h
index 1fed3c9294fc5ada17c4cd641ae62bf38845ab15..d7a1524023dba6d9a3b516c6d351018e7f3e4e20 100644
--- a/include/uapi/linux/sed-opal.h
+++ b/include/uapi/linux/sed-opal.h
@@ -144,6 +144,7 @@ struct opal_read_write_table {
 #define OPAL_FL_LOCKED			0x00000008
 #define OPAL_FL_MBR_ENABLED		0x00000010
 #define OPAL_FL_MBR_DONE		0x00000020
+#define OPAL_FL_SUM_SUPPORTED		0x00000040
 
 struct opal_status {
 	__u32 flags;