From: Ian Campbell <ian.campbell@citrix.com>
Date: Mon, 30 Jun 2014 15:38:20 +0000 (+0100)
Subject: xen: arm: ignore zero sized memory banks
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~4700
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=9559d3d04d6be3a298f763dd68bbe7452c1f317d;p=xen.git

xen: arm: ignore zero sized memory banks

At least one platform (xgene) has a memory node which contains 4
banks, 3 of which are all zeroes.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index 310635ea7d..53f779a4f3 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -322,6 +322,8 @@ static void __init process_memory_node(const void *fdt, int node,
     for ( i = 0; i < banks && early_info.mem.nr_banks < NR_MEM_BANKS; i++ )
     {
         device_tree_get_reg(&cell, address_cells, size_cells, &start, &size);
+        if ( !size )
+            continue;
         early_info.mem.bank[early_info.mem.nr_banks].start = start;
         early_info.mem.bank[early_info.mem.nr_banks].size = size;
         early_info.mem.nr_banks++;