From c4b4f029d48e75dddbb6d41b2edafcd2bda5462e Mon Sep 17 00:00:00 2001
From: Ciro Santilli <ciro.santilli@gmail.com>
Date: Sun, 14 May 2017 11:24:28 +0100
Subject: [PATCH] cannot insmoe workqueue: module already loaded, even though
 lsmod says otherwise

---
 kernel_module/Makefile    |  2 +-
 kernel_module/workqueue.c | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 kernel_module/workqueue.c

diff --git a/kernel_module/Makefile b/kernel_module/Makefile
index 87d35c0..91e5dca 100644
--- a/kernel_module/Makefile
+++ b/kernel_module/Makefile
@@ -1,4 +1,4 @@
-obj-m += $(addsuffix .o, $(notdir $(basename $(wildcard $(BR2_EXTERNAL_KERNEL_MODULE_PATH)/*.c))))
+obj-m += workqueue.o
 ccflags-y := -Wno-declaration-after-statement -std=gnu99
 
 .PHONY: all clean
diff --git a/kernel_module/workqueue.c b/kernel_module/workqueue.c
new file mode 100644
index 0000000..0156ed1
--- /dev/null
+++ b/kernel_module/workqueue.c
@@ -0,0 +1,13 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+int init_module(void)
+{
+	printk(KERN_INFO "hello init\n");
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	printk(KERN_INFO "hello cleanup\n");
+}