1 files changed, 4 insertions, 1 deletions

diff --git a/kernel/resource.c b/kernel/resource.c
index 35fe105d581e..e7f9d2a5db25 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -454,6 +454,9 @@ int walk_mem_res(u64 start, u64 end, void *arg,
  * This function calls the @func callback against all memory ranges of type
  * System RAM which are marked as IORESOURCE_SYSTEM_RAM and IORESOUCE_BUSY.
  * It is to be used only for System RAM.
+ *
+ * This will find System RAM ranges that are children of top-level resources
+ * in addition to top-level System RAM resources.
  */
 int walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
                           void *arg, int (*func)(unsigned long, unsigned long, void *))
@@ -469,7 +472,7 @@ int walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
         flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
         while (start < end &&
                !find_next_iomem_res(start, end, flags, IORES_DESC_NONE,
-                                    true, &res)) {
+                                    false, &res)) {
                 pfn = (res.start + PAGE_SIZE - 1) >> PAGE_SHIFT;
                 end_pfn = (res.end + 1) >> PAGE_SHIFT;
                 if (end_pfn > pfn)