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Commit aa5242e7 authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Fix recursion in PROM tree building. 



Use iteration for scanning of PROM node siblings.

Based upon a patch by Greg Onufer, who found this bug.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7cc5c855

arch/sparc64/kernel/prom.c

+15 −4
Original line number Diff line number Diff line
@@ -1636,10 +1636,21 @@ static struct device_node * __init create_node(phandle node, struct device_node 


static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)

{

	struct device_node *ret = NULL, *prev_sibling = NULL;

	struct device_node *dp;



	while (1) {

		dp = create_node(node, parent);

	if (dp) {

		if (!dp)

			break;



		if (prev_sibling)

			prev_sibling->sibling = dp;



		if (!ret)

			ret = dp;

		prev_sibling = dp;



		*(*nextp) = dp;

		*nextp = &dp->allnext;
@@ -1648,10 +1659,10 @@ static struct device_node * __init build_tree(struct device_node *parent, phandl 


		dp->child = build_tree(dp, prom_getchild(node), nextp);



		dp->sibling = build_tree(parent, prom_getsibling(node), nextp);

		node = prom_getsibling(node);

	}



	return dp;

	return ret;

}



void __init prom_build_devicetree(void)