[PATCH v2] ppc/pnv.c: fix "system-id" FDT when -uuid is set

[Daniel Henrique Barboza]

Setting -uuid in the pnv machine does not work:

./qemu-system-ppc64 -machine powernv8,accel=tcg  -uuid 
7ff61ca1-a4a0-4bc1-944c-abd114a35e80
qemu-system-ppc64: error creating device tree: (fdt_property_string(fdt, 
"system-id", buf)): FDT_ERR_BADSTATE

This happens because we're using "fdt_property_string" to retrieve a
"system-id" attribute that does not exist, instead of using
fdt_setprop_string() to create a "system-id" attribute with the uuid
provided via command line.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---

changes from v1:
- fixed typo in commit title


 hw/ppc/pnv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 32ab8071a4..9e532caa9f 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -552,7 +552,7 @@ static void *pnv_dt_create(MachineState *machine)
     buf =  qemu_uuid_unparse_strdup(&qemu_uuid);
     _FDT((fdt_setprop_string(fdt, 0, "vm,uuid", buf)));
     if (qemu_uuid_set) {
-        _FDT((fdt_property_string(fdt, "system-id", buf)));
+        _FDT((fdt_setprop_string(fdt, 0, "system-id", buf)));
     }
     g_free(buf);
 
-- 
2.31.1