[PATCH 1/4] of: dynamic: changeset prop-update revert fix

[Pantelis Antoniou]

When reverting an update property changeset entry that created a
property the reverse operation is a remove property and not an update.

Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
 drivers/of/dynamic.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index c647bd1..4145b44 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -497,6 +497,11 @@ static void __of_changeset_entry_invert(struct of_changeset_entry *ce,
 	case OF_RECONFIG_UPDATE_PROPERTY:
 		rce->old_prop = ce->prop;
 		rce->prop = ce->old_prop;
+		/* update was used but original property did not exist */
+		if (!rce->prop) {
+			rce->action = OF_RECONFIG_REMOVE_PROPERTY;
+			rce->prop = ce->prop;
+		}
 		break;
 	}
 }
-- 
1.7.12