From 8b925a3dd8a4d7451092cb9aa11da727ba69e0f0 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 15 Nov 2007 19:24:03 +0100 Subject: [PATCH] i2c/eeprom: Recognize VGN as a valid Sony Vaio name prefix Recent (i.e. 2005 and later) Sony Vaio laptops have names beginning with VGN rather than PCG. Update the eeprom driver so that it recognizes these. Signed-off-by: Jean Delvare --- drivers/i2c/chips/eeprom.c | 14 +++++++++----- 1 file 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; -- 2.20.1