diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/chips/eeprom.c | 5 | ||||
| -rw-r--r-- | drivers/i2c/chips/max6875.c | 5 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core.c | 13 |
3 files changed, 10 insertions, 13 deletions
diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c index a27420a54c8..d58403a4790 100644 --- a/drivers/i2c/chips/eeprom.c +++ b/drivers/i2c/chips/eeprom.c @@ -161,11 +161,6 @@ int eeprom_detect(struct i2c_adapter *adapter, int address, int kind) struct eeprom_data *data; int err = 0; - /* prevent 24RF08 corruption */ - if (kind < 0) - i2c_smbus_xfer(adapter, address, 0, 0, 0, - I2C_SMBUS_QUICK, NULL); - /* There are three ways we can read the EEPROM data: (1) I2C block reads (faster, but unsupported by most adapters) (2) Consecutive byte reads (100% overhead) diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c index 31cee2d34a1..9e1aeb69abf 100644 --- a/drivers/i2c/chips/max6875.c +++ b/drivers/i2c/chips/max6875.c @@ -171,11 +171,6 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind) struct max6875_data *data; int err = 0; - /* Prevent 24rf08 corruption (in case of user error) */ - if (kind < 0) - i2c_smbus_xfer(adapter, address, 0, 0, 0, - I2C_SMBUS_QUICK, NULL); - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE_DATA | I2C_FUNC_SMBUS_READ_BYTE)) return 0; diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index bee0148dfab..dda472e5e8b 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -679,9 +679,16 @@ static int i2c_probe_address(struct i2c_adapter *adapter, int addr, int kind, return 0; /* Make sure there is something at this address, unless forced */ - if (kind < 0 - && i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) < 0) - return 0; + if (kind < 0) { + if (i2c_smbus_xfer(adapter, addr, 0, 0, 0, + I2C_SMBUS_QUICK, NULL) < 0) + return 0; + + /* prevent 24RF08 corruption */ + if ((addr & ~0x0f) == 0x50) + i2c_smbus_xfer(adapter, addr, 0, 0, 0, + I2C_SMBUS_QUICK, NULL); + } /* Finally call the custom detection function */ err = found_proc(adapter, addr, kind); |