[RFC PATCH V1 12/12] libxl: Fix duplicate memory node in DT

[Oleksandr Tyshchenko <olekstysh@gmail.com>]

From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>

When two or more VirtIO devices are passed to DomU the
following message is observed:
OF: Duplicate name in base, renamed to "virtio#1"

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
---
 tools/libxl/libxl_arm.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_arm.c b/tools/libxl/libxl_arm.c
index a68fb14..9671a44 100644
--- a/tools/libxl/libxl_arm.c
+++ b/tools/libxl/libxl_arm.c
@@ -710,9 +710,11 @@ static int make_virtio_mmio_node(libxl__gc *gc, void *fdt,
 {
     int res;
     gic_interrupt intr;
+    /* Placeholder for virtio@ + a 64-bit number + \0 */
+    char buf[24];
 
-    /* XXX: Add address in the node name */
-    res = fdt_begin_node(fdt, "virtio");
+    snprintf(buf, sizeof(buf), "virtio@%"PRIx64, base);
+    res = fdt_begin_node(fdt, buf);
     if (res) return res;
 
     res = fdt_property_compat(gc, fdt, 1, "virtio,mmio");
-- 
2.7.4