diff options
Diffstat (limited to 'drivers')
-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 a27420a54c84..d58403a47908 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) | |||
161 | struct eeprom_data *data; | 161 | struct eeprom_data *data; |
162 | int err = 0; | 162 | int err = 0; |
163 | 163 | ||
164 | /* prevent 24RF08 corruption */ | ||
165 | if (kind < 0) | ||
166 | i2c_smbus_xfer(adapter, address, 0, 0, 0, | ||
167 | I2C_SMBUS_QUICK, NULL); | ||
168 | |||
169 | /* There are three ways we can read the EEPROM data: | 164 | /* There are three ways we can read the EEPROM data: |
170 | (1) I2C block reads (faster, but unsupported by most adapters) | 165 | (1) I2C block reads (faster, but unsupported by most adapters) |
171 | (2) Consecutive byte reads (100% overhead) | 166 | (2) Consecutive byte reads (100% overhead) |
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c index 31cee2d34a17..9e1aeb69abf9 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) | |||
171 | struct max6875_data *data; | 171 | struct max6875_data *data; |
172 | int err = 0; | 172 | int err = 0; |
173 | 173 | ||
174 | /* Prevent 24rf08 corruption (in case of user error) */ | ||
175 | if (kind < 0) | ||
176 | i2c_smbus_xfer(adapter, address, 0, 0, 0, | ||
177 | I2C_SMBUS_QUICK, NULL); | ||
178 | |||
179 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE_DATA | 174 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_BYTE_DATA |
180 | | I2C_FUNC_SMBUS_READ_BYTE)) | 175 | | I2C_FUNC_SMBUS_READ_BYTE)) |
181 | return 0; | 176 | return 0; |
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index bee0148dfab8..dda472e5e8be 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, | |||
679 | return 0; | 679 | return 0; |
680 | 680 | ||
681 | /* Make sure there is something at this address, unless forced */ | 681 | /* Make sure there is something at this address, unless forced */ |
682 | if (kind < 0 | 682 | if (kind < 0) { |
683 | && i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) < 0) | 683 | if (i2c_smbus_xfer(adapter, addr, 0, 0, 0, |
684 | return 0; | 684 | I2C_SMBUS_QUICK, NULL) < 0) |
685 | return 0; | ||
686 | |||
687 | /* prevent 24RF08 corruption */ | ||
688 | if ((addr & ~0x0f) == 0x50) | ||
689 | i2c_smbus_xfer(adapter, addr, 0, 0, 0, | ||
690 | I2C_SMBUS_QUICK, NULL); | ||
691 | } | ||
685 | 692 | ||
686 | /* Finally call the custom detection function */ | 693 | /* Finally call the custom detection function */ |
687 | err = found_proc(adapter, addr, kind); | 694 | err = found_proc(adapter, addr, kind); |