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Diffstat (limited to 'Documentation/devicetree/changesets.txt')
| -rw-r--r-- | Documentation/devicetree/changesets.txt | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/Documentation/devicetree/changesets.txt b/Documentation/devicetree/changesets.txt deleted file mode 100644 index cb488eeb6353..000000000000 --- a/Documentation/devicetree/changesets.txt +++ /dev/null @@ -1,31 +0,0 @@ -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 -through applying the changeset, then the tree will be rolled back to the -previous state. A changeset can also be removed after it has been -applied. - -When a changeset is applied, all of the changes get applied to the tree -at once before emitting OF_RECONFIG notifiers. This is so that the -receiver sees a complete and consistent state of the tree when it -receives the notifier. - -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. - -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. - -If a successfully applied changeset needs to be removed, it can be done -with of_changeset_revert(). |