Be more robust against seek/read errors on sysfs.

git-svn-id: http://lm-sensors.org/svn/i2c-tools/trunk@5714 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -10,6 +10,7 @@ SVN
                 Add side-by-side formatting option
                 Add merged cells formatting option
                 Try harder to decode the manufacturing date
+                Handle read errors on sysfs
   decode-xeon: Delete
   i2c-stub-from-dump: Use udev settle to speed up initialization
 

eeprom/decode-dimms

@@ -1557,8 +1557,10 @@ sub readspd($$$)
 		sysopen(HANDLE, "$dimm_i/eeprom", O_RDONLY)
 			or die "Cannot open $dimm_i/eeprom";
 		binmode HANDLE;
-		sysseek(HANDLE, $offset, SEEK_SET);
-		sysread(HANDLE, my $eeprom, $size);
+		sysseek(HANDLE, $offset, SEEK_SET)
+			or die "Cannot seek $dimm_i/eeprom";
+		sysread(HANDLE, my $eeprom, $size)
+			or die "Cannot read $dimm_i/eeprom";
 		close HANDLE;
 		@bytes = unpack("C*", $eeprom);
 	} else {