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i2c/eeprom: Recognize VGN as a valid Sony Vaio name prefix

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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 <khali@linux-fr.org>
This commit is contained in:
Jean Delvare 2007-11-15 19:24:03 +01:00 committed by Jean Delvare
parent 0f2cbd38aa
commit 8b925a3dd8
1 changed files with 9 additions and 5 deletions
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14
drivers/i2c/chips/eeprom.c
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@ -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;