dt: add 'const' for of_property_read_string parameter **out_string
The existing dt codes usually call of_get_property to get a string
property and save it as a 'const char *'. The patch adds'const' for
of_property_read_string parameter **out_string to make the converting
of existing code a little easier.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/of/base.c b/drivers/of/base.c
index b8b65fd..57ec27b 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -639,7 +639,7 @@
* The out_string pointer is modified only if a valid string can be decoded.
*/
int of_property_read_string(struct device_node *np, char *propname,
- char **out_string)
+ const char **out_string)
{
struct property *prop = of_find_property(np, propname, NULL);
if (!prop)