device: constify some variables

Change-Id: I6830a65bc9cea2907f4209bb97a53ccebcbf248d
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-on: https://review.coreboot.org/25873
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/device/device_util.c b/src/device/device_util.c
index 6bc2730143..3d7f5a154a 100644
--- a/src/device/device_util.c
+++ b/src/device/device_util.c
@@ -269,7 +269,7 @@ u32 dev_path_encode(struct device *dev)
  * Warning: This function uses a static buffer. Don't call it more than once
  * from the same print statement!
  */
-const char *dev_path(struct device *dev)
+const char *dev_path(const struct device *dev)
 {
 	static char buffer[DEVICE_PATH_MAX];
 
@@ -814,7 +814,7 @@ bool dev_is_active_bridge(struct device *dev)
 	return 0;
 }
 
-static void resource_tree(struct device *root, int debug_level, int depth)
+static void resource_tree(const struct device *root, int debug_level, int depth)
 {
 	int i = 0;
 	struct device *child;
@@ -846,7 +846,7 @@ static void resource_tree(struct device *root, int debug_level, int depth)
 	}
 }
 
-void print_resource_tree(struct device *root, int debug_level, const char *msg)
+void print_resource_tree(const struct device *root, int debug_level, const char *msg)
 {
 	/* Bail if root is null. */
 	if (!root) {
@@ -862,7 +862,7 @@ void print_resource_tree(struct device *root, int debug_level, const char *msg)
 	resource_tree(root, debug_level, 0);
 }
 
-void show_devs_tree(struct device *dev, int debug_level, int depth)
+void show_devs_tree(const struct device *dev, int debug_level, int depth)
 {
 	char depth_str[20];
 	int i;