[Xen-devel] [PATCH] xen/dts: fix DT_ROOT_NODE_ADDR_CELLS_DEFAULT

[Julien Grall <julien.grall@xxxxxxxxxx>]

The commit dbd1243 "xen/arm: Add helpers to use the device tree" introduced
DT_ROOT_NODE_ADDR_CELLS_DEFAULT with is used for default value when 
#address-cells
is not found in the device tree. This value is wrong due to a bad copy from 
Linux
code.

The ePAR (section 2.3.5) says: "If missing, a client program should assume a
default value of 2 for #address-cells, and a value of 1 for #size-cells."

Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
---
 xen/include/xen/device_tree.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index 402cef2..5cc1905 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -233,7 +233,7 @@ struct dt_device_node * __init 
dt_find_interrupt_controller(const char *compat);
 #define dt_compat_cmp(s1, s2, l) strnicmp((s1), (s2), l)
 
 /* Default #address and #size cells */
-#define DT_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#define DT_ROOT_NODE_ADDR_CELLS_DEFAULT 2
 #define DT_ROOT_NODE_SIZE_CELLS_DEFAULT 1
 
 #define for_each_property_of_node(dn, pp)                   \
-- 
1.7.10.4


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