[Qemu-devel] [PATCH v1 29/30] RISC-V: Don't add NULL bootargs to device-tree

[Michael Clark]

---
 hw/riscv/sifive_u.c | 4 +++-
 hw/riscv/spike.c    | 6 ++++--
 hw/riscv/virt.c     | 4 +++-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 326b0f434cff..02721d43c474 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -206,7 +206,9 @@ static void create_fdt(SiFiveUState *s, const struct 
MemmapEntry *memmap,
 
     qemu_fdt_add_subnode(fdt, "/chosen");
     qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
-    qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    if (cmdline) {
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    }
     g_free(nodename);
 }
 
diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c
index f94e2b670799..5dd7d28aed4e 100644
--- a/hw/riscv/spike.c
+++ b/hw/riscv/spike.c
@@ -156,8 +156,10 @@ static void create_fdt(SpikeState *s, const struct 
MemmapEntry *memmap,
     g_free(cells);
     g_free(nodename);
 
-    qemu_fdt_add_subnode(fdt, "/chosen");
-    qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    if (cmdline) {
+        qemu_fdt_add_subnode(fdt, "/chosen");
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    }
  }
 
 static void spike_v1_10_0_board_init(MachineState *machine)
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 321fa6e8122a..c889aa3cd269 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -253,7 +253,9 @@ static void *create_fdt(RISCVVirtState *s, const struct 
MemmapEntry *memmap,
 
     qemu_fdt_add_subnode(fdt, "/chosen");
     qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
-    qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    if (cmdline) {
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
+    }
     g_free(nodename);
 
     return fdt;
-- 
2.7.0