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dm: core: Avoid creating a name property when unflattening

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The current implementation creates a 'name' value for every node. This
is not needed for the latest device tree format, which includes a name in
the node header.

Adjust the code to point the name at the node header instead.

Also simplify ofnode_get_name(), now that we can rely on it to set the
name correctly. Update the comment to make it clear what name the root
node has.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-09-06 20:27:15 -06:00 committed by Tom Rini
parent 9243224687
commit f46ec93ed5
3 changed files with 8 additions and 3 deletions
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2
drivers/core/ofnode.c
View file

@ -356,7 +356,7 @@ const char *ofnode_get_name(ofnode node)
} }
if (ofnode_is_np(node)) if (ofnode_is_np(node))
return strrchr(node.np->full_name, '/') + 1; return node.np->name;
return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL); return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
} }

2
include/dm/ofnode.h
View file

@ -466,7 +466,7 @@ ofnode ofnode_get_parent(ofnode node);
* ofnode_get_name() - get the name of a node * ofnode_get_name() - get the name of a node
* *
* @node: valid node to look up * @node: valid node to look up
* Return: name of node * Return: name of node (for the root node this is "")
*/ */
const char *ofnode_get_name(ofnode node); const char *ofnode_get_name(ofnode node);

7
lib/of_live.c
View file

@ -97,6 +97,10 @@ static void *unflatten_dt_node(const void *blob, void *mem, int *poffset,
char *fn; char *fn;
fn = (char *)np + sizeof(*np); fn = (char *)np + sizeof(*np);
if (new_format) {
np->name = pathp;
has_name = 1;
}
np->full_name = fn; np->full_name = fn;
if (new_format) { if (new_format) {
/* rebuild full path for new format */ /* rebuild full path for new format */
@ -202,7 +206,8 @@ static void *unflatten_dt_node(const void *blob, void *mem, int *poffset,
} }
if (!dryrun) { if (!dryrun) {
*prev_pp = NULL; *prev_pp = NULL;
np->name = of_get_property(np, "name", NULL); if (!has_name)
np->name = of_get_property(np, "name", NULL);
np->type = of_get_property(np, "device_type", NULL); np->type = of_get_property(np, "device_type", NULL);
if (!np->name) if (!np->name)