Changes regarding the new i2c_check_addr function

Changes in sensors.c:

  sensors_detect now skips addresses which are already taken. Even a
  force parameter can not override this, as it could lead to major
  problems.
  For ISA addresses, the same is done; but the client drivers still need
  a check if they claim more than one ISA address (as all of the current
  ISA clients do).

Changes in chip drivers:

  Removed the comment about needing address registration

Changes in i2cdetect.c:

  Marks addresses which are already claimed

Changes in sensors-detect:

  Warns when an address is already claimed, and skips it.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@667 7894878c-1315-0410-8ee3-d5d059ff63e0

prog/detect/sensors-detect

@@ -1082,8 +1082,8 @@ sub scan_adapter
       next;
     }
 
-    i2c_set_slave_addr(\*FILE,$addr) or print("Can't set address to $_?!?\n"), 
-                                     next;
+    i2c_set_slave_addr(\*FILE,$addr) or 
+        printf("Client at address 0x%02x can not be probed - unload all client drivers first!\n",$addr), next;
 
     next unless i2c_smbus_write_quick(\*FILE,$SMBUS_WRITE) >= 0;
     printf "Client found at address 0x%02x\n",$addr;