Make LM73 detection less problematic.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@5994 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -6,6 +6,7 @@ SVN HEAD
                   Improve filtering of fake DMI data
                   Print DMI system/product version if available
                   Fix loading of the cpuid module
+                  Make LM73 detection less problematic
 
 3.3.1 (2011-07-21)
   isadump: Add support for word (16-bit) and long (32-bit) reads

prog/detect/sensors-detect

@@ -4044,7 +4044,9 @@ sub lm73_detect
 	# Bits that always return 0
 	return if ($conf & 0x0c) or ($status & 0x10);
 
-	return if i2c_smbus_read_word_data($file, 0x07) != 0x9001;
+	# Test with byte read first to avoid confusing other chips
+	return if i2c_smbus_read_byte_data($file, 0x07) != 0x01
+	       or i2c_smbus_read_word_data($file, 0x07) != 0x9001;
 
 	# Make sure the chip supports SMBus read word transactions
 	my $cur = i2c_smbus_read_word_data($file, 0x00);