fix rt_atomic_dec_and_test

components/drivers/core/platform_ofw.c

@@ -206,6 +206,8 @@ static int platform_ofw_device_probe(void)
 
     if (ofw_node_root)
     {
+        rt_ofw_node_get(ofw_node_root);
+
         err = platform_ofw_device_probe_once(ofw_node_root);
 
         rt_ofw_node_put(ofw_node_root);
@@ -216,11 +218,13 @@ static int platform_ofw_device_probe(void)
             rt_ofw_node_put(node);
         }
 
+        rt_ofw_node_get(ofw_node_chosen);
         if ((node = rt_ofw_get_child_by_compatible(ofw_node_chosen, "simple-framebuffer")))
         {
             platform_ofw_device_probe_once(node);
             rt_ofw_node_put(node);
         }
+        rt_ofw_node_get(ofw_node_chosen);
     }
     else
     {

include/rtatomic.h

@@ -203,7 +203,7 @@ rt_inline rt_atomic_t rt_soft_atomic_compare_exchange_strong(volatile rt_atomic_
 
 rt_inline rt_bool_t rt_atomic_dec_and_test(volatile rt_atomic_t *ptr)
 {
-    return rt_atomic_sub(ptr, 1) == 0;
+    return rt_atomic_sub(ptr, 1) == 1;
 }
 
 rt_inline rt_atomic_t rt_atomic_fetch_add_unless(volatile rt_atomic_t *ptr, rt_atomic_t a, rt_atomic_t u)