Input: tsdev - schedule removal

Compaq touchscreen emulation (drivers/input/tsdev.c) is old,
was obsolete when it was written by the authors own admission
and much better userspace solutions like tslib now exist.
The name is also confusing.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Acked-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Documentation/feature-removal-schedule.txt

@@ -312,3 +312,18 @@ Why:    In kernel tree version of driver is unmaintained. Sk98lin driver
 	replaced by the skge driver. 
 Who:    Stephen Hemminger <shemminger@osdl.org>
 
+---------------------------
+
+What:	Compaq touchscreen device emulation
+When:	Oct 2007
+Files:	drivers/input/tsdev.c
+Why:	The code says it was obsolete when it was written in 2001.
+	tslib is a userspace library which does anything tsdev can do and
+	much more besides in userspace where this code belongs. There is no
+	longer any need for tsdev and applications should have converted to
+	use tslib by now.
+	The name "tsdev" is also extremely confusing and lots of people have
+	it loaded when they don't need/use it.
+Who:	Richard Purdie <rpurdie@rpsys.net>
+
+---------------------------

drivers/input/tsdev.c

@@ -151,6 +151,10 @@ static int tsdev_open(struct inode *inode, struct file *file)
 	int i = iminor(inode) - TSDEV_MINOR_BASE;
 	struct tsdev_list *list;
 
+	printk(KERN_WARNING "tsdev (compaq touchscreen emulation) is scheduled "
+		"for removal.\nSee Documentation/feature-removal-schedule.txt "
+		"for details.\n");
+
 	if (i >= TSDEV_MINORS || !tsdev_table[i & TSDEV_MINOR_MASK])
 		return -ENODEV;