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Commit 624ab2a4 authored by Frank Rowand's avatar Frank Rowand Committed by Rob Herring
Browse files

of: Update structure of code to be clearer, also remove BUG_ON() 



Remove BUG_ON(), which is frowned upon and not needed here.
Restructure to remove some excessive complexity.

Signed-off-by: default avatarFrank Rowand <frank.rowand@am.sony.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 25e16877

drivers/of/resolver.c

+17 −31
Original line number Diff line number Diff line
@@ -136,8 +136,8 @@ static int update_usages_of_a_phandle_reference(struct device_node *overlay, 
			err = -EINVAL;

			goto err_fail;

		}



		*s++ = '\0';



		err = kstrtoint(s, 10, &offset);

		if (err)

			goto err_fail;
@@ -219,13 +219,11 @@ static int adjust_local_phandle_references(struct device_node *local_fixups, 
			if (off >= prop->length || (off + 4) > prop->length)

				return -EINVAL;



			if (phandle_delta) {

			phandle = be32_to_cpu(*(__be32 *)(prop->value + off));

			phandle += phandle_delta;

			*(__be32 *)(prop->value + off) = cpu_to_be32(phandle);

		}

	}

	}



	for_each_child_of_node(local_fixups, child) {
@@ -267,48 +265,36 @@ int of_resolve_phandles(struct device_node *overlay) 
	phandle phandle, phandle_delta;

	int err;



	if (!overlay)

		pr_err("%s: null overlay\n", __func__);

	if (overlay && !of_node_check_flag(overlay, OF_DETACHED))

		pr_err("%s: node %s not detached\n", __func__,

			 overlay->full_name);

	if (!overlay || !of_node_check_flag(overlay, OF_DETACHED))

	if (!overlay) {

		pr_err("null overlay\n");

		return -EINVAL;

	}

	if (!of_node_check_flag(overlay, OF_DETACHED)) {

		pr_err("overlay not detached\n");

		return -EINVAL;

	}



	phandle_delta = live_tree_max_phandle() + 1;

	adjust_overlay_phandles(overlay, phandle_delta);



	local_fixups = NULL;

	for_each_child_of_node(overlay, local_fixups)

		if (!of_node_cmp(local_fixups->name, "__local_fixups__"))

			break;



	if (local_fixups != NULL) {

		err = adjust_local_phandle_references(local_fixups,

				overlay, 0);

	err = adjust_local_phandle_references(local_fixups, overlay, phandle_delta);

	if (err)

		return err;



		BUG_ON(adjust_local_phandle_references(local_fixups,

				overlay, phandle_delta));

	}



	tree_symbols = NULL;

	overlay_symbols = NULL;

	overlay_fixups = NULL;



	tree_symbols = of_find_node_by_path("/__symbols__");



	for_each_child_of_node(overlay, child) {



		if (!overlay_symbols && !of_node_cmp(child->name, "__symbols__"))

		if (!of_node_cmp(child->name, "__symbols__"))

			overlay_symbols = child;



		if (!overlay_fixups && !of_node_cmp(child->name, "__fixups__"))

		if (!of_node_cmp(child->name, "__fixups__"))

			overlay_fixups = child;



		if (overlay_symbols && overlay_fixups)

			break;

	}



	if (!overlay_fixups) {
@@ -317,7 +303,7 @@ int of_resolve_phandles(struct device_node *overlay) 
	}



	if (!tree_symbols) {

		pr_err("%s: no symbols in root of device tree.\n", __func__);

		pr_err("no symbols in root of device tree.\n");

		err = -EINVAL;

		goto out;

	}