samples: connector: from Documentation to samples directory

A small bug with the new autoksyms support showed that there are
two kernel modules in the Documentation directory that qualify
as samples, while all other samples are in the samples/ directory.

This patch was originally meant as a workaround for that bug, but
it has now been solved in a different way. However, I still think
it makes sense as a cleanup to consolidate all sample code in
one place.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/Makefile

-subdir-y := accounting auxdisplay blackfin connector \
+subdir-y := accounting auxdisplay blackfin \
 	filesystems filesystems ia64 laptops mic misc-devices \
 	networking pcmcia prctl ptp timers vDSO video4linux \
 	watchdog

Documentation/connector/connector.txt

@@ -186,3 +186,11 @@ only cn_test.c test module used it.
 Some work in netlink area is still being done, so things can be changed in
 2.6.15 timeframe, if it will happen, documentation will be updated for that
 kernel.
+
+/*****************************************/
+Code samples
+/*****************************************/
+
+Sample code for a connector test module and user space can be found
+in samples/connector/. To build this code, enable CONFIG_CONNECTOR
+and CONFIG_SAMPLES.

samples/Kconfig

@@ -76,4 +76,13 @@ config SAMPLE_CONFIGFS
 	help
 	  Builds a sample configfs interface.
 
+config SAMPLE_CONNECTOR
+	tristate "Build connector sample -- loadable modules only"
+	depends on CONNECTOR && m
+	help
+	  When enabled, this builds both a sample kernel module for
+	  the connector interface and a user space tool to communicate
+	  with it.
+	  See also Documentation/connector/connector.txt
+
 endif # SAMPLES

samples/Makefile

@@ -2,4 +2,4 @@
 
 obj-$(CONFIG_SAMPLES)	+= kobject/ kprobes/ trace_events/ livepatch/ \
 			   hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/ \
-			   configfs/
+			   configfs/ connector/

Documentation/connector/Makefile → samples/connector/Makefile

-ifneq ($(CONFIG_CONNECTOR),)
-obj-m += cn_test.o
-endif
+obj-$(CONFIG_SAMPLE_CONNECTOR) += cn_test.o
 
 # List of programs to build
+ifdef CONFIG_SAMPLE_CONNECTOR
 hostprogs-y := ucon
+endif
 
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)