[PATCH] Only compile synaptics.c when enabled in config

[PATCH] Only compile synaptics.c when enabled in config

[Peter Osterlund]

Here is a patch that implements CONFIG_MOUSE_PS2_SYNAPTICS properly,
so that the synaptics code is not included in the driver when
synaptics support is disabled in .config. The patch also updates the
Kconfig help text.

 linux-petero/drivers/input/mouse/Kconfig     |   12 +++++-------
 linux-petero/drivers/input/mouse/Makefile    |    3 ++-
 linux-petero/drivers/input/mouse/synaptics.c |    4 ----
 linux-petero/drivers/input/mouse/synaptics.h |    7 +++++++
 4 files changed, 14 insertions(+), 12 deletions(-)

diff -puN drivers/input/mouse/Kconfig~synaptics-config-cleanup drivers/input/mouse/Kconfig
--- linux/drivers/input/mouse/Kconfig~synaptics-config-cleanup	2003-09-28 07:07:29.000000000 +0200
+++ linux-petero/drivers/input/mouse/Kconfig	2003-09-28 07:07:29.000000000 +0200
@@ -35,13 +35,11 @@ config MOUSE_PS2_SYNAPTICS
 	  Say Y here if you have a Synaptics TouchPad connected to your system.
 	  This touchpad is found on many modern laptop computers.
 
-	  Note that you also need a user space driver to interpret the data
-	  generated by the kernel. A compatible driver for XFree86 is available
-	  from http://w1.894.telia.com/~u89404340/touchpad/index.html
-
-	  The gpm program is not yet able to interpret the data from this
-	  driver, so if you need to use the touchpad in the console, you have to
-	  say N for now.
+	  Note that you also need a user space driver to take advantage of the
+	  advanced features of the touchpad. A compatible driver for XFree86 is
+	  available from http://w1.894.telia.com/~u89404340/touchpad/index.html
+	  and a new version of GPM is available from
+	  http://www.geocities.com/dt_or/gpm/gpm.html
 
 config MOUSE_SERIAL
 	tristate "Serial mouse"
diff -puN drivers/input/mouse/Makefile~synaptics-config-cleanup drivers/input/mouse/Makefile
--- linux/drivers/input/mouse/Makefile~synaptics-config-cleanup	2003-09-28 07:07:29.000000000 +0200
+++ linux-petero/drivers/input/mouse/Makefile	2003-09-28 07:07:29.000000000 +0200
@@ -14,4 +14,5 @@ obj-$(CONFIG_MOUSE_PC9800)	+= 98busmouse
 obj-$(CONFIG_MOUSE_PS2)		+= psmouse.o
 obj-$(CONFIG_MOUSE_SERIAL)	+= sermouse.o
 
-psmouse-objs  := psmouse-base.o logips2pp.o synaptics.o
+psmouse-objs				:= psmouse-base.o logips2pp.o
+psmouse-$(CONFIG_MOUSE_PS2_SYNAPTICS)	+= synaptics.o
diff -puN drivers/input/mouse/synaptics.c~synaptics-config-cleanup drivers/input/mouse/synaptics.c
--- linux/drivers/input/mouse/synaptics.c~synaptics-config-cleanup	2003-09-28 07:07:29.000000000 +0200
+++ linux-petero/drivers/input/mouse/synaptics.c	2003-09-28 07:07:29.000000000 +0200
@@ -375,10 +375,6 @@ int synaptics_init(struct psmouse *psmou
 {
 	struct synaptics_data *priv;
 
-#ifndef CONFIG_MOUSE_PS2_SYNAPTICS
-	return -1;
-#endif
-
 	psmouse->private = priv = kmalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 	if (!priv)
 		return -1;
diff -puN drivers/input/mouse/synaptics.h~synaptics-config-cleanup drivers/input/mouse/synaptics.h
--- linux/drivers/input/mouse/synaptics.h~synaptics-config-cleanup	2003-09-28 07:07:29.000000000 +0200
+++ linux-petero/drivers/input/mouse/synaptics.h	2003-09-28 07:07:29.000000000 +0200
@@ -10,10 +10,17 @@
 #define _SYNAPTICS_H
 
 
+#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
 extern void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs);
 extern int synaptics_init(struct psmouse *psmouse);
 extern int synaptics_pt_init(struct psmouse *psmouse);
 extern void synaptics_disconnect(struct psmouse *psmouse);
+#else
+static inline void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs) {}
+static inline int synaptics_init(struct psmouse *psmouse) { return -1; }
+static inline int synaptics_pt_init(struct psmouse *psmouse) { return -1; }
+static inline void synaptics_disconnect(struct psmouse *psmouse) {}
+#endif
 
 /* synaptics queries */
 #define SYN_QUE_IDENTIFY		0x00

_

-- 
Peter Osterlund - petero2@telia.com
http://w1.894.telia.com/~u89404340