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Commit f09bc831 authored by Shawn Guo's avatar Shawn Guo Committed by Grant Likely
Browse files

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: default avatarShawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent a3b85363

drivers/of/base.c

+1 −1
Original line number Diff line number Diff line
@@ -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)

include/linux/of.h

+1 −1
Original line number Diff line number Diff line
@@ -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);