diff options
| author | Frank Rowand <frank.rowand@sony.com> | 2018-10-13 05:38:26 +0300 |
|---|---|---|
| committer | Frank Rowand <frank.rowand@sony.com> | 2018-11-09 09:12:24 +0300 |
| commit | 5babefb7f7ab1f23861336d511cc666fa45ede82 (patch) | |
| tree | 6e56ef1b48bcbfb34fb40b9b556bcb64ca206604 /drivers/of | |
| parent | f96278810150fc39085d1872e5b39ea06366d03e (diff) | |
| download | linux-5babefb7f7ab1f23861336d511cc666fa45ede82.tar.xz | |
of: unittest: allow base devicetree to have symbol metadata
The overlay metadata nodes in the FDT created from testcases.dts
are not handled properly.
The __fixups__ and __local_fixups__ node were added to the live
devicetree, but should not be.
Only the first property in the /__symbols__ node was added to the
live devicetree if the live devicetree already contained a
/__symbols node. All of the node's properties must be added.
Tested-by: Alan Tull <atull@kernel.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/unittest.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 14838b21ec6a..d625a91a7f60 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1071,20 +1071,44 @@ static void __init of_unittest_platform_populate(void) * of np into dup node (present in live tree) and * updates parent of children of np to dup. * - * @np: node already present in live tree + * @np: node whose properties are being added to the live tree * @dup: node present in live tree to be updated */ static void update_node_properties(struct device_node *np, struct device_node *dup) { struct property *prop; + struct property *save_next; struct device_node *child; - - for_each_property_of_node(np, prop) - of_add_property(dup, prop); + int ret; for_each_child_of_node(np, child) child->parent = dup; + + /* + * "unittest internal error: unable to add testdata property" + * + * If this message reports a property in node '/__symbols__' then + * the respective unittest overlay contains a label that has the + * same name as a label in the live devicetree. The label will + * be in the live devicetree only if the devicetree source was + * compiled with the '-@' option. If you encounter this error, + * please consider renaming __all__ of the labels in the unittest + * overlay dts files with an odd prefix that is unlikely to be + * used in a real devicetree. + */ + + /* + * open code for_each_property_of_node() because of_add_property() + * sets prop->next to NULL + */ + for (prop = np->properties; prop != NULL; prop = save_next) { + save_next = prop->next; + ret = of_add_property(dup, prop); + if (ret) + pr_err("unittest internal error: unable to add testdata property %pOF/%s", + np, prop->name); + } } /** @@ -1093,18 +1117,23 @@ static void update_node_properties(struct device_node *np, * * @np: Node to attach to live tree */ -static int attach_node_and_children(struct device_node *np) +static void attach_node_and_children(struct device_node *np) { struct device_node *next, *dup, *child; unsigned long flags; const char *full_name; full_name = kasprintf(GFP_KERNEL, "%pOF", np); + + if (!strcmp(full_name, "/__local_fixups__") || + !strcmp(full_name, "/__fixups__")) + return; + dup = of_find_node_by_path(full_name); kfree(full_name); if (dup) { update_node_properties(np, dup); - return 0; + return; } child = np->child; @@ -1125,8 +1154,6 @@ static int attach_node_and_children(struct device_node *np) attach_node_and_children(child); child = next; } - - return 0; } /** |