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authorPhilipp Zabel <p.zabel@pengutronix.de>2014-03-04 12:31:24 +0100
committerPhilipp Zabel <p.zabel@pengutronix.de>2014-03-06 17:41:54 +0100
commitd484700a36952c6675aa47dec4d7a536929aa922 (patch)
treee963ac4830c406395117d7aa2f9fd80d19b55a3e /drivers/of
parentf2a575f67695dcba9062acd666ae5aab2380b95c (diff)
downloadlinux-d484700a36952c6675aa47dec4d7a536929aa922.tar.bz2
of: Warn if of_graph_parse_endpoint is called with the root node
If of_graph_parse_endpoint is given a parentless node instead of an endpoint node, it is clearly a bug. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/base.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 715144af3a83..fd4b9c2eaa15 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1996,6 +1996,9 @@ int of_graph_parse_endpoint(const struct device_node *node,
{
struct device_node *port_node = of_get_parent(node);
+ WARN_ONCE(!port_node, "%s(): endpoint %s has no parent node\n",
+ __func__, node->full_name);
+
memset(endpoint, 0, sizeof(*endpoint));
endpoint->local_node = node;