fix unreliable it87 detection (config reg. is 0x00, not 0x40)

ticket 758.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1273 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -18,6 +18,7 @@ ask CVS about it:
 -----------------------------------------------------------------------------
 
 2.6.3 (2001????)
+  File sensors.conf.eg: Un-ignore it87 in8, temp3, fan3
   Library: Add PCF8591 and W83697HF support; fix w83* fan_min computes
   Module i2c-piix4: Check for uninitialized base address
   Module fscscy: implement min/max for voltages and fans
@@ -25,10 +26,9 @@ ask CVS about it:
   Module w83781d: Add W83697HF support
   Program i2cdump: Add i2c block read capability
   Program mkpatch.pl: Add support for fscscy, add more help entries
-  Program sensors: Add PCF8591 and W83697HF support;
-                   add it87 in8 and temp3 labels
+  Program sensors: Add PCF8591 and W83697HF support
   Program sensors-detect: Add several Nvidia chips, add PCF8591,
-                          fix Via 686a detection
+                          fix Via686a and it87 detection
 
 
 2.6.2 (20011118)

prog/detect/sensors-detect

@@ -2181,7 +2181,7 @@ sub via686a_isa_detect
 # $_[2]: Address
 # Returns: undef if not detected, (7) if detected.
 # Registers used:
-#   0x40: Configuration
+#   0x00: Configuration
 #   0x48: Full I2C Address
 #   0x58: Mfr ID
 # Note that this function is always called through a closure, so the
@@ -2191,7 +2191,7 @@ sub ite_detect
   my $reg;
   my ($chip,$file,$addr) = @_;
   return unless i2c_smbus_read_byte_data($file,0x48) == $addr;
-  return unless (i2c_smbus_read_byte_data($file,0x40) & 0x80) == 0x00;
+  return unless (i2c_smbus_read_byte_data($file,0x00) & 0x80) == 0x00;
   return unless i2c_smbus_read_byte_data($file,0x58) == 0x90;
   return (7);
 }
@@ -2214,7 +2214,7 @@ sub ite_isa_detect
     return;
   }
   my $readproc = sub { isa_read_byte $addr + 5, $addr + 6, @_ };
-  return unless (&$readproc(0x40) & 0x80) == 0x00;
+  return unless (&$readproc(0x00) & 0x80) == 0x00;
   my $reg = &$readproc(0x58);
   return unless ($reg == 0x90);
   return 7;