3 files changed, 13 insertions, 9 deletions

diff --git a/drivers/i2c/chips/ds1337.c b/drivers/i2c/chips/ds1337.c
index 74ece8ac1c23..82cf959989fd 100644
--- a/drivers/i2c/chips/ds1337.c
+++ b/drivers/i2c/chips/ds1337.c
@@ -165,7 +165,7 @@ static int ds1337_set_datetime(struct i2c_client *client, struct rtc_time *dt)
         buf[0] = 0;             /* reg offset */
         buf[1] = BIN2BCD(dt->tm_sec);
         buf[2] = BIN2BCD(dt->tm_min);
-        buf[3] = BIN2BCD(dt->tm_hour) | (1 << 6);
+        buf[3] = BIN2BCD(dt->tm_hour);
         buf[4] = BIN2BCD(dt->tm_wday) + 1;
         buf[5] = BIN2BCD(dt->tm_mday);
         buf[6] = BIN2BCD(dt->tm_mon) + 1;
@@ -344,9 +344,9 @@ static void ds1337_init_client(struct i2c_client *client)
 
         /* Ensure that device is set in 24-hour mode */
         val = i2c_smbus_read_byte_data(client, DS1337_REG_HOUR);
-        if ((val >= 0) && (val & (1 << 6)) == 0)
+        if ((val >= 0) && (val & (1 << 6)))
                 i2c_smbus_write_byte_data(client, DS1337_REG_HOUR,
-                                          val | (1 << 6));
+                                          val & 0x3f);
 }
 
 static int ds1337_detach_client(struct i2c_client *client)
diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c
index 6ea413f6d5e5..a2da31b0dd7b 100644
--- a/drivers/i2c/chips/eeprom.c
+++ b/drivers/i2c/chips/eeprom.c
@@ -163,6 +163,11 @@ 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)
@@ -187,9 +192,6 @@ int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
         new_client->driver = &eeprom_driver;
         new_client->flags = 0;
 
-        /* prevent 24RF08 corruption */
-        i2c_smbus_write_quick(new_client, 0);
-
         /* Fill in the remaining client fields */
         strlcpy(new_client->name, "eeprom", I2C_NAME_SIZE);
         data->valid = 0;
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c
index c4f14d9623c4..0230375f72e5 100644
--- a/drivers/i2c/chips/max6875.c
+++ b/drivers/i2c/chips/max6875.c
@@ -343,6 +343,11 @@ 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);
+
         /* 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)
@@ -370,9 +375,6 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind)
         new_client->driver = &max6875_driver;
         new_client->flags = 0;
 
-        /* Prevent 24RF08 corruption */
-        i2c_smbus_write_quick(new_client, 0);
-
         /* Setup the user section */
         data->blocks[max6875_eeprom_user].type    = max6875_eeprom_user;
         data->blocks[max6875_eeprom_user].slices  = USER_EEPROM_SLICES;