tools: Add coccinelle script to catch thread to NULL assignments

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>

diff --git a/tools/coccinelle/struct_thread_null.cocci b/tools/coccinelle/struct_thread_null.cocci
new file mode 100644 (file)
index 0000000..4867b44
--- /dev/null
+++ b/tools/coccinelle/struct_thread_null.cocci
@@ -0,0 +1,9 @@
+@@
+identifier I;
+identifier func =~ "thread_add_";
+struct thread *thread;
+@@
+
+*thread = NULL;
+...
+func