[PATCH 2/2] of_device_is_stdout_path: split off options and support aliases
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Wed Jun 14 04:31:10 PDT 2017
Several device trees use something like:
stdout-path = "serial0:115200n8";
Currently of_device_is_stdout_path fails to do the right thing here
because it expects an absolute node path and no options. So split off
options (everything after the colon) and resolve aliases.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
---
drivers/of/base.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 592ebb015a73..e401c11a878f 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1999,6 +1999,7 @@ int of_device_is_stdout_path(struct device_d *dev)
{
struct device_node *dn;
const char *name;
+ char *q;
if (!dev->device_node)
return 0;
@@ -2010,7 +2011,16 @@ int of_device_is_stdout_path(struct device_d *dev)
if (!name)
return 0;
- dn = of_find_node_by_path(name);
+ /* This could make use of strchrnul it it were available */
+ q = strchr(name, ':');
+ if (!q)
+ q = name + strlen(name);
+
+ q = xstrndup(name, q - name);
+
+ dn = of_find_node_by_path_or_alias(NULL, q);
+
+ free(q);
return dn == dev->device_node;
}
--
2.11.0
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