fdt: Fixup only valid memory banks

Memory banks with address 0 and size 0 are empty and should not be
passed to the OS via device tree.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/common/fdt_support.c b/common/fdt_support.c
index bd0478de40c812c3f08a43af8f33866f21e12927..b14853625f62cc89ce29b763c66a5bfd76d45437 100644 (file)
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -447,6 +447,13 @@ int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks)
                return err;
        }
 
+       for (i = 0; i < banks; i++) {
+               if (start[i] == 0 && size[i] == 0)
+                       break;
+       }
+
+       banks = i;
+
        if (!banks)
                return 0;