From: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
- Add a SPDX header;
- Add a document title;
- Some whitespace fixes and new line breaks;
- Add it to devicetree/index.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
---
.../{changesets.txt => changesets.rst} | 24 ++++++++++++-------
Documentation/devicetree/index.rst | 1 +
2 files changed, 16 insertions(+), 9 deletions(-)
rename Documentation/devicetree/{changesets.txt => changesets.rst} (59%)
diff --git a/Documentation/devicetree/changesets.txt b/Documentation/devicetree/changesets.rst
similarity index 59%
rename from Documentation/devicetree/changesets.txt
rename to Documentation/devicetree/changesets.rst
index cb488eeb6353..c7fd8cd6a270 100644
--- a/Documentation/devicetree/changesets.txt
+++ b/Documentation/devicetree/changesets.rst
@@ -1,3 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=============
+DT Changesets
+=============
+
A DT changeset is a method which allows one to apply changes
in the live tree in such a way that either the full set of changes
will be applied, or none of them will be. If an error occurs partway
@@ -15,17 +21,17 @@ The sequence of a changeset is as follows.
1. of_changeset_init() - initializes a changeset
2. A number of DT tree change calls, of_changeset_attach_node(),
-of_changeset_detach_node(), of_changeset_add_property(),
-of_changeset_remove_property, of_changeset_update_property() to prepare
-a set of changes. No changes to the active tree are made at this point.
-All the change operations are recorded in the of_changeset 'entries'
-list.
+ of_changeset_detach_node(), of_changeset_add_property(),
+ of_changeset_remove_property, of_changeset_update_property() to prepare
+ a set of changes. No changes to the active tree are made at this point.
+ All the change operations are recorded in the of_changeset 'entries'
+ list.
3. of_changeset_apply() - Apply the changes to the tree. Either the
-entire changeset will get applied, or if there is an error the tree will
-be restored to the previous state. The core ensures proper serialization
-through locking. An unlocked version __of_changeset_apply is available,
-if needed.
+ entire changeset will get applied, or if there is an error the tree will
+ be restored to the previous state. The core ensures proper serialization
+ through locking. An unlocked version __of_changeset_apply is available,
+ if needed.
If a successfully applied changeset needs to be removed, it can be done
with of_changeset_revert().
diff --git a/Documentation/devicetree/index.rst b/Documentation/devicetree/index.rst
index 6b4daf252375..64c78c3ffea6 100644
--- a/Documentation/devicetree/index.rst
+++ b/Documentation/devicetree/index.rst
@@ -10,3 +10,4 @@ Open Firmware and Device Tree
usage-model
writing-schema
booting-without-of
+ changesets
--
2.21.1
