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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/of/pdt.c
..
..
@@ -21,8 +21,6 @@
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21
 
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 static struct of_pdt_ops *of_pdt_prom_ops __initdata;
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23
 
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-void __initdata (*of_pdt_build_more)(struct device_node *dp);
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-
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 #if defined(CONFIG_SPARC)
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 unsigned int of_pdt_unique_id __initdata;
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26
 
..
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@@ -32,24 +30,7 @@
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 static char * __init of_pdt_build_full_name(struct device_node *dp)
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 {
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-	int len, ourlen, plen;
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-	char *n;
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-
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-	dp->path_component_name = build_path_component(dp);
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-
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-	plen = strlen(dp->parent->full_name);
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-	ourlen = strlen(dp->path_component_name);
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-	len = ourlen + plen + 2;
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-
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-	n = prom_early_alloc(len);
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-	strcpy(n, dp->parent->full_name);
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-	if (!of_node_is_root(dp->parent)) {
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-		strcpy(n + plen, "/");
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-		plen++;
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-	}
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-	strcpy(n + plen, dp->path_component_name);
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-
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-	return n;
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+	return build_path_component(dp);
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 }
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35
 
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 #else /* CONFIG_SPARC */
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@@ -60,23 +41,21 @@
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 static char * __init of_pdt_build_full_name(struct device_node *dp)
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 {
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 	static int failsafe_id = 0; /* for generating unique names on failure */
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+	const char *name;
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+	char path[256];
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 	char *buf;
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 	int len;
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-	if (of_pdt_prom_ops->pkg2path(dp->phandle, NULL, 0, &len))
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-		goto failsafe;
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+	if (!of_pdt_prom_ops->pkg2path(dp->phandle, path, sizeof(path), &len)) {
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+		name = kbasename(path);
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+		buf = prom_early_alloc(strlen(name) + 1);
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+		strcpy(buf, name);
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+		return buf;
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+	}
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-	buf = prom_early_alloc(len + 1);
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-	if (of_pdt_prom_ops->pkg2path(dp->phandle, buf, len, &len))
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-		goto failsafe;
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-	return buf;
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-
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- failsafe:
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-	buf = prom_early_alloc(strlen(dp->parent->full_name) +
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-			       strlen(dp->name) + 16);
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-	sprintf(buf, "%s/%s@unknown%i",
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-		of_node_is_root(dp->parent) ? "" : dp->parent->full_name,
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-		dp->name, failsafe_id++);
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+	name = of_get_property(dp, "name", &len);
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+	buf = prom_early_alloc(len + 16);
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+	sprintf(buf, "%s@unknown%i", name, failsafe_id++);
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 	pr_err("%s: pkg2path failed; assigning %s\n", __func__, buf);
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 	return buf;
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 }
..
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@@ -176,10 +155,11 @@
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 	dp->parent = parent;
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156
 
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 	dp->name = of_pdt_get_one_property(node, "name");
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-	dp->type = of_pdt_get_one_property(node, "device_type");
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 	dp->phandle = node;
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159
 
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 	dp->properties = of_pdt_build_prop_list(node);
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+
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+	dp->full_name = of_pdt_build_full_name(dp);
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163
 
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 	irq_trans_init(dp);
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165
 
..
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@@ -204,12 +184,7 @@
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 			ret = dp;
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 		prev_sibling = dp;
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186
 
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-		dp->full_name = of_pdt_build_full_name(dp);
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-
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187
 		dp->child = of_pdt_build_tree(dp, of_pdt_prom_ops->getchild(node));
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-
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-		if (of_pdt_build_more)
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-			of_pdt_build_more(dp);
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188
 
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 		node = of_pdt_prom_ops->getsibling(node);
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190
 	}
..
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@@ -228,9 +203,6 @@
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 	of_pdt_prom_ops = ops;
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204
 
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 	of_root = of_pdt_create_node(root_node, NULL);
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-#if defined(CONFIG_SPARC)
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-	of_root->path_component_name = "";
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-#endif
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206
 	of_root->full_name = "/";
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207
 
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 	of_root->child = of_pdt_build_tree(of_root,