1 files changed, 9 insertions, 5 deletions

diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c
index ef8a754db1db..1a7eeebac506 100644
--- a/drivers/i2c/chips/eeprom.c
+++ b/drivers/i2c/chips/eeprom.c
@@ -204,12 +204,16 @@ static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
                 goto exit_kfree;
 
         /* 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)) {
                         dev_info(&new_client->dev, "Vaio EEPROM detected, "
                                  "enabling privacy protection\n");
                         data->nature = VAIO;