Recognize VGN as a valid Sony Vaio name prefix. This is a backport from

Linux 2.6.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@5021 7894878c-1315-0410-8ee3-d5d059ff63e0

CHANGES

@@ -6,6 +6,7 @@ SVN-HEAD
   Makefile: Revert changeset 4738, fix bug #2187 differently
   Module eeprom: Hide Sony Vaio serial numbers to regular users (2.6 backport)
                  Drop useless debugging log messages
+                 Recognize VGN as a valid Sony Vaio name prefix (2.6 backport)
   Program decode-dimms.pl: Fix DDR2 SDRAM module speed decoding
                            Update manufacturer IDs.
   Program sensors: Hide spurious errors on missing f71872f voltage inputs

kernel/chips/eeprom.c

@@ -200,12 +200,16 @@ static int eeprom_detect(struct i2c_adapter *adapter, int address,
 		goto ERROR3;
 
 	/* Detect the Vaio nature of EEPROMs.
-	   We use the "PCG-" prefix as the signature. */
+	   We use the "PCG-" or "VGN-" prefix as the signature. */
 	if (address == 0x57) {
-		if (i2c_smbus_read_byte_data(new_client, 0x80) == 'P'
-		 && i2c_smbus_read_byte(new_client) == 'C'
-		 && i2c_smbus_read_byte(new_client) == 'G'
-		 && i2c_smbus_read_byte(new_client) == '-') {
+		char name[4];
+
+		name[0] = i2c_smbus_read_byte_data(new_client, 0x80);
+		name[1] = i2c_smbus_read_byte(new_client);
+		name[2] = i2c_smbus_read_byte(new_client);
+		name[3] = i2c_smbus_read_byte(new_client);
+
+		if (!memcmp(name, "PCG-", 4) || !memcmp(name, "VGN-", 4)) {
 			printk(KERN_INFO "Vaio EEPROM detected, "
 			       "enabling privacy protection\n");
 			data->nature = NATURE_VAIO;