2 files changed, 13 insertions, 15 deletions

diff --git a/drivers/firmware/memmap.c b/drivers/firmware/memmap.c
index 05aa2d406ac6..d5ea8a68d338 100644
--- a/drivers/firmware/memmap.c
+++ b/drivers/firmware/memmap.c
@@ -31,8 +31,12 @@
  * information is necessary as for the resource tree.
  */
 struct firmware_map_entry {
-        resource_size_t         start;  /* start of the memory range */
-        resource_size_t         end;    /* end of the memory range (incl.) */
+        /*
+         * start and end must be u64 rather than resource_size_t, because e820
+         * resources can lie at addresses above 4G.
+         */
+        u64                     start;  /* start of the memory range */
+        u64                     end;    /* end of the memory range (incl.) */
         const char              *type;  /* type of the memory range */
         struct list_head        list;   /* entry for the linked list */
         struct kobject          kobj;   /* kobject for each entry */
@@ -101,7 +105,7 @@ static LIST_HEAD(map_entries);
  * Common implementation of firmware_map_add() and firmware_map_add_early()
  * which expects a pre-allocated struct firmware_map_entry.
  **/
-static int firmware_map_add_entry(resource_size_t start, resource_size_t end,
+static int firmware_map_add_entry(u64 start, u64 end,
                                   const char *type,
                                   struct firmware_map_entry *entry)
 {
@@ -132,8 +136,7 @@ static int firmware_map_add_entry(resource_size_t start, resource_size_t end,
  *
  * Returns 0 on success, or -ENOMEM if no memory could be allocated.
  **/
-int firmware_map_add(resource_size_t start, resource_size_t end,
-                     const char *type)
+int firmware_map_add(u64 start, u64 end, const char *type)
 {
         struct firmware_map_entry *entry;
 
@@ -157,8 +160,7 @@ int firmware_map_add(resource_size_t start, resource_size_t end,
  *
  * Returns 0 on success, or -ENOMEM if no memory could be allocated.
  **/
-int __init firmware_map_add_early(resource_size_t start, resource_size_t end,
-                                  const char *type)
+int __init firmware_map_add_early(u64 start, u64 end, const char *type)
 {
         struct firmware_map_entry *entry;
 
diff --git a/include/linux/firmware-map.h b/include/linux/firmware-map.h
index cca686b39123..875451f1373a 100644
--- a/include/linux/firmware-map.h
+++ b/include/linux/firmware-map.h
@@ -24,21 +24,17 @@
  */
 #ifdef CONFIG_FIRMWARE_MEMMAP
 
-int firmware_map_add(resource_size_t start, resource_size_t end,
-                     const char *type);
-int firmware_map_add_early(resource_size_t start, resource_size_t end,
-                           const char *type);
+int firmware_map_add(u64 start, u64 end, const char *type);
+int firmware_map_add_early(u64 start, u64 end, const char *type);
 
 #else /* CONFIG_FIRMWARE_MEMMAP */
 
-static inline int firmware_map_add(resource_size_t start, resource_size_t end,
-                                   const char *type)
+static inline int firmware_map_add(u64 start, u64 end, const char *type)
 {
         return 0;
 }
 
-static inline int firmware_map_add_early(resource_size_t start,
-                                         resource_size_t end, const char *type)
+static inline int firmware_map_add_early(u64 start, u64 end, const char *type)
 {
         return 0;
 }