kernel-devel/chardev: added example

kernel and userspace example, for open, close, read, write

TODO: implement read, write

Signed-off-by: Manuel Traut <manut@linutronix.de>

1 files changed, 13 insertions, 0 deletions

diff --git a/kernel-devel/char-device/example/kernel/Makefile b/kernel-devel/char-device/example/kernel/Makefile
new file mode 100644
index 0000000..822c7d7
--- /dev/null
+++ b/kernel-devel/char-device/example/kernel/Makefile
@@ -0,0 +1,13 @@
+# If KERNELRELEASE is defined, we've been invoked from the
+# kernel build system and can use its language.
+ifneq ($(KERNELRELEASE),)
+    obj-m := huhu.o
+
+# Otherwise we were called directly from the command
+# line; invoke the kernel build system.
+else
+    KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+    PWD := $(shell pwd)
+default:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
+endif