From: Paolo Bonzini <pbonzini@redhat.com>

qtest_set_command_cb passed to g_once should match GThreadFunc,
which it does not.  But using g_once is actually unnecessary,
because the function is called by riscv_harts_realize() under
the Big QEMU Lock.

Reported-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250410161722.595634-1-pbonzini@redhat.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Cc: qemu-stable@nongnu.org
---
 hw/riscv/riscv_hart.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c
index ac6539bd3e..333083a4f1 100644
--- a/hw/riscv/riscv_hart.c
+++ b/hw/riscv/riscv_hart.c
@@ -104,8 +104,11 @@ static bool csr_qtest_callback(CharBackend *chr, gchar **words)
 
 static void riscv_cpu_register_csr_qtest_callback(void)
 {
-    static GOnce once;
-    g_once(&once, (GThreadFunc)qtest_set_command_cb, csr_qtest_callback);
+    static bool first = true;
+    if (first) {
+        first = false;
+        qtest_set_command_cb(csr_qtest_callback);
+    }
 }
 #endif
 
-- 
2.49.0