You can pull this changeset from:
	bk://kernel.bkbits.net/vojtech/input

===================================================================

ChangeSet@1.1587, 2004-02-09 01:47:16+01:00, vojtech@suse.cz
  input: Fix "psmouse: Lost sync" problem. It was really losing sync.


 i8042.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

===================================================================

diff -Nru a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
--- a/drivers/input/serio/i8042.c	Mon Feb  9 01:47:46 2004
+++ b/drivers/input/serio/i8042.c	Mon Feb  9 01:47:46 2004
@@ -379,9 +379,12 @@
 	unsigned int dfl;
 	int ret;
 
+	mod_timer(&i8042_timer, jiffies + I8042_POLL_PERIOD);
+
 	spin_lock_irqsave(&i8042_lock, flags);
 	str = i8042_read_status();
-	data = i8042_read_data();
+	if (str & I8042_STR_OBF)
+		data = i8042_read_data();
 	spin_unlock_irqrestore(&i8042_lock, flags);
 
 	if (~str & I8042_STR_OBF) {
@@ -432,7 +435,6 @@
 irq_ret:
 	ret = 1;
 out:
-	mod_timer(&i8042_timer, jiffies + I8042_POLL_PERIOD);
 	return IRQ_RETVAL(ret);
 }