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dt: add 'const' for of_property_read_string parameter **out_string

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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>
This commit is contained in:
Shawn Guo 2011-07-04 09:01:18 +08:00 committed by Grant Likely
parent a3b853633d
commit f09bc831b7
2 changed files with 2 additions and 2 deletions
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2
drivers/of/base.c
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@ -639,7 +639,7 @@ EXPORT_SYMBOL_GPL(of_property_read_u32);
* 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)

2
include/linux/of.h
View file

@ -198,7 +198,7 @@ extern struct property *of_find_property(const struct device_node *np,
extern int of_property_read_u32(struct device_node *np, char *propname,
u32 *out_value);
extern int of_property_read_string(struct device_node *np, char *propname,
char **out_string);
const char **out_string);
extern int of_device_is_compatible(const struct device_node *device,
const char *);
extern int of_device_is_available(const struct device_node *device);