From: Thierry Reding <treding@nvidia.com>
Date: Thu, 15 Feb 2018 18:05:59 +0000 (+0100)
Subject: fdt: Fixup only valid memory banks
X-Git-Tag: v2018.03-rc4~54
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ed5af03f9bb8905f1e94d68ab49f22d7f061d75f;p=oweals%2Fu-boot.git

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 bd0478de40..b14853625f 100644
--- 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;