Example lm_sensors-2 driver

Though it is called the LM78 driver, there is not too much LM78 specific
code in it; it can better be seen as an example code skeleton for other
drivers. Right now, it creats a file /proc/sensors-test, which contains
a list of busses it registered itself on. Stupid, but very useful for
testing purposes!

You need a 2.0 kernel for lm78.o to insert (or hack the /proc system
specific parts; see lm78.c of lm_sensors version 1 how to do this).
Other parts of lm_sensors-2 are not tested for 2.1 kernels either, but
I am certain it won't work in this case :-).

See the TODO list to get some idea what is left to do, choose something
and implement it. Or not :-). But please, send a note to the mailing
list when you start on something, to avoid duplicate work...

Other notable changes:
  the smbus_access routines now use (the more logical) i2c_adapter
  structure, instead of smbus_adapter.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@13 7894878c-1315-0410-8ee3-d5d059ff63e0

kernel/busses/i2c-piix4.c

@@ -49,6 +49,7 @@ s32 piix4_access(u8 addr, char read_write,
                  u8 command, int size, union smbus_data * data)
 {
   /* TO BE WRITTEN! */
+  return -1;
 }
 
 
@@ -89,10 +90,9 @@ int piix4_cleanup(void)
   if (piix4_initialized >= 2)
   {
     if ((res = smbus_del_adapter(&piix4_adapter))) {
-      printk("piix4.o: smbus_del_adapter failed, module not removed");
+      printk("piix4.o: smbus_del_adapter failed, module not removed\n");
       return res;
-    }
-    else
+    } else
       piix4_initialized--;
   }
   if (piix4_initialized >= 1) {