[PATCH v3 1/5] target/loongarch/cpu: Fix cpu_class_by_name function

[Xiaojuan Yang]

In loongarch_cpu_class_by_name(char *cpu_model) function,
the argument cpu_model already has the suffix '-loongarch-cpu',
so we should remove the LOONGARCH_CPU_TYPE_NAME(cpu_model) macro.
And add the assertion that 'cpu_model' resolves to a class of the
appropriate type.

Signed-off-by: Xiaojuan Yang <yangxiaoj...@loongson.cn>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
 target/loongarch/cpu.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index e21715592a..ed26f9beed 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -571,11 +571,12 @@ static void loongarch_cpu_init(Object *obj)
 static ObjectClass *loongarch_cpu_class_by_name(const char *cpu_model)
 {
     ObjectClass *oc;
-    char *typename;
 
-    typename = g_strdup_printf(LOONGARCH_CPU_TYPE_NAME("%s"), cpu_model);
-    oc = object_class_by_name(typename);
-    g_free(typename);
+    oc = object_class_by_name(cpu_model);
+    if (!oc || !object_class_dynamic_cast(oc, TYPE_LOONGARCH_CPU) ||
+        object_class_is_abstract(oc)) {
+        return NULL;
+    }
     return oc;
 }
 
-- 
2.31.1