device: Clean up resource utility function signatures

Drop extern declarations from functions.
Declare resource arguments as const.

Change-Id: I7684cc7813bad805c39a762892636818279ac134
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55475
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 22 insertions, 26 deletions

diff --git a/src/device/device_util.c b/src/device/device_util.c
index f05f71df8699..a5d186006479 100644
--- a/src/device/device_util.c
+++ b/src/device/device_util.c
@@ -450,7 +450,7 @@ static resource_t align_down(resource_t val, unsigned long gran)
  * @param resource The resource whose limit is desired.
  * @return The end.
  */
-resource_t resource_end(struct resource *resource)
+resource_t resource_end(const struct resource *resource)
 {
 	resource_t base, end;
 
@@ -476,7 +476,7 @@ resource_t resource_end(struct resource *resource)
  * @param resource The resource whose maximum is desired.
  * @return The maximum.
  */
-resource_t resource_max(struct resource *resource)
+resource_t resource_max(const struct resource *resource)
 {
 	resource_t max;
 
@@ -491,7 +491,7 @@ resource_t resource_max(struct resource *resource)
  * @param resource The resource type to decode.
  * @return TODO.
  */
-const char *resource_type(struct resource *resource)
+const char *resource_type(const struct resource *resource)
 {
 	static char buffer[RESOURCE_TYPE_MAX];
 	snprintf(buffer, sizeof(buffer), "%s%s%s%s",
@@ -513,7 +513,7 @@ const char *resource_type(struct resource *resource)
  * @param resource The resource that was just stored.
  * @param comment TODO
  */
-void report_resource_stored(struct device *dev, struct resource *resource,
+void report_resource_stored(struct device *dev, const struct resource *resource,
 			    const char *comment)
 {
 	char buf[10];
diff --git a/src/include/device/resource.h b/src/include/device/resource.h
index 3a7ccf09e66f..098d0b653a6e 100644
--- a/src/include/device/resource.h
+++ b/src/include/device/resource.h
@@ -63,31 +63,27 @@ struct resource {
 /* Generic resource helper functions */
 struct device;
 struct bus;
-extern void compact_resources(struct device *dev);
-extern struct resource *probe_resource(const struct device *dev,
-				       unsigned int index);
-extern struct resource *new_resource(struct device *dev, unsigned int index);
-extern struct resource *find_resource(const struct device *dev,
-				      unsigned int index);
-extern resource_t resource_end(struct resource *resource);
-extern resource_t resource_max(struct resource *resource);
-extern void report_resource_stored(struct device *dev,
-	struct resource *resource, const char *comment);
-
-typedef void (*resource_search_t)(void *gp, struct device *dev,
-	struct resource *res);
-extern void search_bus_resources(struct bus *bus,
-	unsigned long type_mask, unsigned long type,
-	resource_search_t search, void *gp);
-
-extern void search_global_resources(
-	unsigned long type_mask, unsigned long type,
-	resource_search_t search, void *gp);
+void compact_resources(struct device *dev);
+struct resource *probe_resource(const struct device *dev, unsigned int index);
+struct resource *new_resource(struct device *dev, unsigned int index);
+struct resource *find_resource(const struct device *dev, unsigned int index);
+resource_t resource_end(const struct resource *resource);
+resource_t resource_max(const struct resource *resource);
+void report_resource_stored(struct device *dev, const struct resource *resource,
+			    const char *comment);
+
+typedef void (*resource_search_t)(void *gp, struct device *dev, struct resource *res);
+
+void search_bus_resources(struct bus *bus, unsigned long type_mask, unsigned long type,
+			  resource_search_t search, void *gp);
+
+void search_global_resources(unsigned long type_mask, unsigned long type,
+			     resource_search_t search, void *gp);
 
 #define RESOURCE_TYPE_MAX 20
-extern const char *resource_type(struct resource *resource);
+const char *resource_type(const struct resource *resource);
 
-static inline void *res2mmio(struct resource *res, unsigned long offset,
+static inline void *res2mmio(const struct resource *res, unsigned long offset,
 			     unsigned long mask)
 {
 	return (void *)(uintptr_t)((res->base + offset) & ~mask);