Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6

85 files changed, 1615 insertions, 972 deletions

diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c
index e928cdb041cb..8102876c7c3f 100644
--- a/drivers/hwmon/adm1021.c
+++ b/drivers/hwmon/adm1021.c
@@ -121,7 +121,7 @@ static int adm1021_write_value(struct i2c_client *client, u8 reg,
 static struct adm1021_data *adm1021_update_device(struct device *dev);
 
 /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */
-static int read_only = 0;
+static int read_only;
 
 
 /* This is the driver that will be inserted */
@@ -204,11 +204,10 @@ static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access adm1021_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct adm1021_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct adm1021_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto error0;
         }
-        memset(data, 0, sizeof(struct adm1021_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/adm1025.c b/drivers/hwmon/adm1025.c
index 526b7ff179eb..3ec12421694f 100644
--- a/drivers/hwmon/adm1025.c
+++ b/drivers/hwmon/adm1025.c
@@ -331,11 +331,10 @@ static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct adm1025_data));
 
         /* The common I2C client data is placed right before the
            ADM1025-specific data. */
diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c
index 625158110fd4..e0f56549d1d8 100644
--- a/drivers/hwmon/adm1026.c
+++ b/drivers/hwmon/adm1026.c
@@ -315,7 +315,7 @@ static struct i2c_driver adm1026_driver = {
         .detach_client  = adm1026_detach_client,
 };
 
-int adm1026_attach_adapter(struct i2c_adapter *adapter)
+static int adm1026_attach_adapter(struct i2c_adapter *adapter)
 {
         if (!(adapter->class & I2C_CLASS_HWMON)) {
                 return 0;
@@ -323,7 +323,7 @@ int adm1026_attach_adapter(struct i2c_adapter *adapter)
         return i2c_probe(adapter, &addr_data, adm1026_detect);
 }
 
-int adm1026_detach_client(struct i2c_client *client)
+static int adm1026_detach_client(struct i2c_client *client)
 {
         struct adm1026_data *data = i2c_get_clientdata(client);
         hwmon_device_unregister(data->class_dev);
@@ -332,7 +332,7 @@ int adm1026_detach_client(struct i2c_client *client)
         return 0;
 }
 
-int adm1026_read_value(struct i2c_client *client, u8 reg)
+static int adm1026_read_value(struct i2c_client *client, u8 reg)
 {
         int res;
 
@@ -346,7 +346,7 @@ int adm1026_read_value(struct i2c_client *client, u8 reg)
         return res;
 }
 
-int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
+static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 {
         int res;
 
@@ -360,7 +360,7 @@ int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
         return res;
 }
 
-void adm1026_init_client(struct i2c_client *client)
+static void adm1026_init_client(struct i2c_client *client)
 {
         int value, i;
         struct adm1026_data *data = i2c_get_clientdata(client);
@@ -460,7 +460,7 @@ void adm1026_init_client(struct i2c_client *client)
         }
 }
 
-void adm1026_print_gpio(struct i2c_client *client)
+static void adm1026_print_gpio(struct i2c_client *client)
 {
         struct adm1026_data *data = i2c_get_clientdata(client);
         int  i;
@@ -492,7 +492,7 @@ void adm1026_print_gpio(struct i2c_client *client)
         }
 }
 
-void adm1026_fixup_gpio(struct i2c_client *client)
+static void adm1026_fixup_gpio(struct i2c_client *client)
 {
         struct adm1026_data *data = i2c_get_clientdata(client);
         int  i;
@@ -1452,8 +1452,8 @@ static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 
-int adm1026_detect(struct i2c_adapter *adapter, int address,
-                int kind)
+static int adm1026_detect(struct i2c_adapter *adapter, int address,
+                          int kind)
 {
         int company, verstep;
         struct i2c_client *new_client;
@@ -1470,13 +1470,11 @@ int adm1026_detect(struct i2c_adapter *adapter, int address,
            client structure, even though we cannot fill it completely yet.
            But it allows us to access adm1026_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct adm1026_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct adm1026_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
 
-        memset(data, 0, sizeof(struct adm1026_data));
-
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
         new_client->addr = address;
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
index 58338ed7c8a1..7c545d5eee45 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -740,11 +740,10 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct adm1031_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index bc7faef162f7..11dc95f8a17e 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -45,6 +45,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/hwmon-sysfs.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
@@ -69,8 +70,7 @@ I2C_CLIENT_INSMOD_3(adm9240, ds1780, lm81);
 #define ADM9240_REG_INT(nr)             (0x41 + (nr))
 #define ADM9240_REG_INT_MASK(nr)        (0x43 + (nr))
 #define ADM9240_REG_TEMP                0x27
-#define ADM9240_REG_TEMP_HIGH           0x39
-#define ADM9240_REG_TEMP_HYST           0x3a
+#define ADM9240_REG_TEMP_MAX(nr)        (0x39 + (nr)) /* 0, 1 = high, hyst */
 #define ADM9240_REG_ANALOG_OUT          0x19
 #define ADM9240_REG_CHASSIS_CLEAR       0x46
 #define ADM9240_REG_VID_FAN_DIV         0x47
@@ -162,177 +162,155 @@ struct adm9240_data {
         u8 fan_min[2];          /* rw   fan1_min */
         u8 fan_div[2];          /* rw   fan1_div, read-only accessor */
         s16 temp;               /* ro   temp1_input, 9-bit sign-extended */
-        s8 temp_high;           /* rw   temp1_max */
-        s8 temp_hyst;           /* rw   temp1_max_hyst */
+        s8 temp_max[2];         /* rw   0 -> temp_max, 1 -> temp_max_hyst */
         u16 alarms;             /* ro   alarms */
         u8 aout;                /* rw   aout_output */
         u8 vid;                 /* ro   vid */
         u8 vrm;                 /* --   vrm set on startup, no accessor */
 };
 
-/* i2c byte read/write interface */
-static int adm9240_read_value(struct i2c_client *client, u8 reg)
+/*** sysfs accessors ***/
+
+/* temperature */
+static ssize_t show_temp(struct device *dev, struct device_attribute *dummy,
+                char *buf)
 {
-        return i2c_smbus_read_byte_data(client, reg);
+        struct adm9240_data *data = adm9240_update_device(dev);
+        return sprintf(buf, "%d\n", data->temp * 500); /* 9-bit value */
 }
 
-static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
+static ssize_t show_max(struct device *dev, struct device_attribute *devattr,
+                char *buf)
 {
-        return i2c_smbus_write_byte_data(client, reg, value);
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+        struct adm9240_data *data = adm9240_update_device(dev);
+        return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000);
 }
 
-/*** sysfs accessors ***/
+static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
+                const char *buf, size_t count)
+{
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+        struct i2c_client *client = to_i2c_client(dev);
+        struct adm9240_data *data = i2c_get_clientdata(client);
+        long val = simple_strtol(buf, NULL, 10);
+
+        down(&data->update_lock);
+        data->temp_max[attr->index] = TEMP_TO_REG(val);
+        i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index),
+                        data->temp_max[attr->index]);
+        up(&data->update_lock);
+        return count;
+}
 
-/* temperature */
-#define show_temp(value, scale)                                 \
-static ssize_t show_##value(struct device *dev,                 \
-                            struct device_attribute *attr,      \
-                            char *buf)                          \
-{                                                               \
-        struct adm9240_data *data = adm9240_update_device(dev); \
-        return sprintf(buf, "%d\n", data->value * scale);       \
-}
-show_temp(temp_high, 1000);
-show_temp(temp_hyst, 1000);
-show_temp(temp, 500); /* 0.5'C per bit */
-
-#define set_temp(value, reg)                                    \
-static ssize_t set_##value(struct device *dev,                  \
-                           struct device_attribute *attr,       \
-                           const char *buf, size_t count)       \
-{                                                               \
-        struct i2c_client *client = to_i2c_client(dev);         \
-        struct adm9240_data *data = adm9240_update_device(dev); \
-        long temp = simple_strtoul(buf, NULL, 10);              \
-                                                                \
-        down(&data->update_lock);                               \
-        data->value = TEMP_TO_REG(temp);                        \
-        adm9240_write_value(client, reg, data->value);          \
-        up(&data->update_lock);                                 \
-        return count;                                           \
-}
-
-set_temp(temp_high, ADM9240_REG_TEMP_HIGH);
-set_temp(temp_hyst, ADM9240_REG_TEMP_HYST);
-
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
-                show_temp_high, set_temp_high);
-static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
-                show_temp_hyst, set_temp_hyst);
 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+                show_max, set_max, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+                show_max, set_max, 1);
 
 /* voltage */
-static ssize_t show_in(struct device *dev, char *buf, int nr)
+static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
+                char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index],
+                                attr->index));
 }
 
-static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+static ssize_t show_in_min(struct device *dev,
+                struct device_attribute *devattr, char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index],
+                                attr->index));
 }
 
-static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+static ssize_t show_in_max(struct device *dev,
+                struct device_attribute *devattr, char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
+        return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index],
+                                attr->index));
 }
 
-static ssize_t set_in_min(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_in_min(struct device *dev,
+                struct device_attribute *devattr,
+                const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct i2c_client *client = to_i2c_client(dev);
         struct adm9240_data *data = i2c_get_clientdata(client);
         unsigned long val = simple_strtoul(buf, NULL, 10);
 
         down(&data->update_lock);
-        data->in_min[nr] = IN_TO_REG(val, nr);
-        adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]);
+        data->in_min[attr->index] = IN_TO_REG(val, attr->index);
+        i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index),
+                        data->in_min[attr->index]);
         up(&data->update_lock);
         return count;
 }
 
-static ssize_t set_in_max(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_in_max(struct device *dev,
+                struct device_attribute *devattr,
+                const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct i2c_client *client = to_i2c_client(dev);
         struct adm9240_data *data = i2c_get_clientdata(client);
         unsigned long val = simple_strtoul(buf, NULL, 10);
 
         down(&data->update_lock);
-        data->in_max[nr] = IN_TO_REG(val, nr);
-        adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]);
+        data->in_max[attr->index] = IN_TO_REG(val, attr->index);
+        i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index),
+                        data->in_max[attr->index]);
         up(&data->update_lock);
         return count;
 }
 
-#define show_in_offset(offset)                                          \
-static ssize_t show_in##offset(struct device *dev,                      \
-                               struct device_attribute *attr,           \
-                               char *buf)                               \
-{                                                                       \
-        return show_in(dev, buf, offset);                               \
-}                                                                       \
-static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL); \
-static ssize_t show_in##offset##_min(struct device *dev,                \
-                                     struct device_attribute *attr,     \
-                                     char *buf)                         \
-{                                                                       \
-        return show_in_min(dev, buf, offset);                           \
-}                                                                       \
-static ssize_t show_in##offset##_max(struct device *dev,                \
-                                     struct device_attribute *attr,     \
-                                     char *buf)                         \
-{                                                                       \
-        return show_in_max(dev, buf, offset);                           \
-}                                                                       \
-static ssize_t                                                          \
-set_in##offset##_min(struct device *dev,                                \
-                     struct device_attribute *attr, const char *buf,    \
-                     size_t count)                                      \
-{                                                                       \
-        return set_in_min(dev, buf, count, offset);                     \
-}                                                                       \
-static ssize_t                                                          \
-set_in##offset##_max(struct device *dev,                                \
-                     struct device_attribute *attr, const char *buf,    \
-                     size_t count)                                      \
-{                                                                       \
-        return set_in_max(dev, buf, count, offset);                     \
-}                                                                       \
-static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,                 \
-                show_in##offset##_min, set_in##offset##_min);           \
-static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,                 \
-                show_in##offset##_max, set_in##offset##_max);
-
-show_in_offset(0);
-show_in_offset(1);
-show_in_offset(2);
-show_in_offset(3);
-show_in_offset(4);
-show_in_offset(5);
+#define vin(nr)                                                 \
+static SENSOR_DEVICE_ATTR(in##nr##_input, S_IRUGO,              \
+                show_in, NULL, nr);                             \
+static SENSOR_DEVICE_ATTR(in##nr##_min, S_IRUGO | S_IWUSR,      \
+                show_in_min, set_in_min, nr);                   \
+static SENSOR_DEVICE_ATTR(in##nr##_max, S_IRUGO | S_IWUSR,      \
+                show_in_max, set_in_max, nr);
+
+vin(0);
+vin(1);
+vin(2);
+vin(3);
+vin(4);
+vin(5);
 
 /* fans */
-static ssize_t show_fan(struct device *dev, char *buf, int nr)
+static ssize_t show_fan(struct device *dev,
+                struct device_attribute *devattr, char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
-                                1 << data->fan_div[nr]));
+        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
+                                1 << data->fan_div[attr->index]));
 }
 
-static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_min(struct device *dev,
+                struct device_attribute *devattr, char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
-                                1 << data->fan_div[nr]));
+        return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index],
+                                1 << data->fan_div[attr->index]));
 }
 
-static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_div(struct device *dev,
+                struct device_attribute *devattr, char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct adm9240_data *data = adm9240_update_device(dev);
-        return sprintf(buf, "%d\n", 1 << data->fan_div[nr]);
+        return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
 }
 
 /* write new fan div, callers must hold data->update_lock */
@@ -341,16 +319,16 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr,
 {
         u8 reg, old, shift = (nr + 2) * 2;
 
-        reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+        reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
         old = (reg >> shift) & 3;
         reg &= ~(3 << shift);
         reg |= (fan_div << shift);
-        adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg);
+        i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
         dev_dbg(&client->dev, "fan%d clock divider changed from %u "
                         "to %u\n", nr + 1, 1 << old, 1 << fan_div);
 }
 
-/* 
+/*
  * set fan speed low limit:
  *
  * - value is zero: disable fan speed low limit alarm
@@ -361,12 +339,15 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr,
  * - otherwise: select fan clock divider to suit fan speed low limit,
  *   measurement code may adjust registers to ensure fan speed reading
  */
-static ssize_t set_fan_min(struct device *dev, const char *buf,
-                size_t count, int nr)
+static ssize_t set_fan_min(struct device *dev,
+                struct device_attribute *devattr,
+                const char *buf, size_t count)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct i2c_client *client = to_i2c_client(dev);
         struct adm9240_data *data = i2c_get_clientdata(client);
         unsigned long val = simple_strtoul(buf, NULL, 10);
+        int nr = attr->index;
         u8 new_div;
 
         down(&data->update_lock);
@@ -406,50 +387,27 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
                 data->fan_div[nr] = new_div;
                 adm9240_write_fan_div(client, nr, new_div);
         }
-        adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr),
+        i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr),
                         data->fan_min[nr]);
 
         up(&data->update_lock);
         return count;
 }
 
-#define show_fan_offset(offset)                                         \
-static ssize_t show_fan_##offset (struct device *dev,                   \
-                                  struct device_attribute *attr,        \
-                                  char *buf)                            \
-{                                                                       \
-return show_fan(dev, buf, offset - 1);                                  \
-}                                                                       \
-static ssize_t show_fan_##offset##_div (struct device *dev,             \
-                                        struct device_attribute *attr,  \
-                                        char *buf)                      \
-{                                                                       \
-return show_fan_div(dev, buf, offset - 1);                              \
-}                                                                       \
-static ssize_t show_fan_##offset##_min (struct device *dev,             \
-                                        struct device_attribute *attr,  \
-                                        char *buf)                      \
-{                                                                       \
-return show_fan_min(dev, buf, offset - 1);                              \
-}                                                                       \
-static ssize_t set_fan_##offset##_min (struct device *dev,              \
-                                       struct device_attribute *attr,   \
-                                       const char *buf, size_t count)   \
-{                                                                       \
-return set_fan_min(dev, buf, count, offset - 1);                        \
-}                                                                       \
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO,                        \
-                show_fan_##offset, NULL);                               \
-static DEVICE_ATTR(fan##offset##_div, S_IRUGO,                          \
-                show_fan_##offset##_div, NULL);                         \
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,                \
-                show_fan_##offset##_min, set_fan_##offset##_min);
-
-show_fan_offset(1);
-show_fan_offset(2);
+#define fan(nr)                                                 \
+static SENSOR_DEVICE_ATTR(fan##nr##_input, S_IRUGO,             \
+                show_fan, NULL, nr - 1);                        \
+static SENSOR_DEVICE_ATTR(fan##nr##_div, S_IRUGO,               \
+                show_fan_div, NULL, nr - 1);                    \
+static SENSOR_DEVICE_ATTR(fan##nr##_min, S_IRUGO | S_IWUSR,     \
+                show_fan_min, set_fan_min, nr - 1);
+
+fan(1);
+fan(2);
 
 /* alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev,
+                struct device_attribute *attr, char *buf)
 {
         struct adm9240_data *data = adm9240_update_device(dev);
         return sprintf(buf, "%u\n", data->alarms);
@@ -457,7 +415,8 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ch
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
 /* vid */
-static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_vid(struct device *dev,
+                struct device_attribute *attr, char *buf)
 {
         struct adm9240_data *data = adm9240_update_device(dev);
         return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
@@ -465,13 +424,16 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 
 /* analog output */
-static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_aout(struct device *dev,
+                struct device_attribute *attr, char *buf)
 {
         struct adm9240_data *data = adm9240_update_device(dev);
         return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
 }
 
-static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_aout(struct device *dev,
+                struct device_attribute *attr,
+                const char *buf, size_t count)
 {
         struct i2c_client *client = to_i2c_client(dev);
         struct adm9240_data *data = i2c_get_clientdata(client);
@@ -479,20 +441,23 @@ static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const
 
         down(&data->update_lock);
         data->aout = AOUT_TO_REG(val);
-        adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->aout);
+        i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout);
         up(&data->update_lock);
         return count;
 }
 static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
 
 /* chassis_clear */
-static ssize_t chassis_clear(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t chassis_clear(struct device *dev,
+                struct device_attribute *attr,
+                const char *buf, size_t count)
 {
         struct i2c_client *client = to_i2c_client(dev);
         unsigned long val = simple_strtol(buf, NULL, 10);
 
         if (val == 1) {
-                adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
+                i2c_smbus_write_byte_data(client,
+                                ADM9240_REG_CHASSIS_CLEAR, 0x80);
                 dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
         }
         return count;
@@ -513,11 +478,10 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct adm9240_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -533,7 +497,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
         if (kind < 0) {
 
                 /* verify chip: reg address should match i2c address */
-                if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
+                if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
                                 != address) {
                         dev_err(&adapter->dev, "detect fail: address match, "
                                         "0x%02x\n", address);
@@ -541,8 +505,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
                 }
 
                 /* check known chip manufacturer */
-                man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID);
-
+                man_id = i2c_smbus_read_byte_data(new_client,
+                                ADM9240_REG_MAN_ID);
                 if (man_id == 0x23) {
                         kind = adm9240;
                 } else if (man_id == 0xda) {
@@ -556,7 +520,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
                 }
 
                 /* successful detect, print chip info */
-                die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV);
+                die_rev = i2c_smbus_read_byte_data(new_client,
+                                ADM9240_REG_DIE_REV);
                 dev_info(&adapter->dev, "found %s revision %u\n",
                                 man_id == 0x23 ? "ADM9240" :
                                 man_id == 0xda ? "DS1780" : "LM81", die_rev);
@@ -588,33 +553,59 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
                 goto exit_detach;
         }
 
-        device_create_file(&new_client->dev, &dev_attr_in0_input);
-        device_create_file(&new_client->dev, &dev_attr_in0_min);
-        device_create_file(&new_client->dev, &dev_attr_in0_max);
-        device_create_file(&new_client->dev, &dev_attr_in1_input);
-        device_create_file(&new_client->dev, &dev_attr_in1_min);
-        device_create_file(&new_client->dev, &dev_attr_in1_max);
-        device_create_file(&new_client->dev, &dev_attr_in2_input);
-        device_create_file(&new_client->dev, &dev_attr_in2_min);
-        device_create_file(&new_client->dev, &dev_attr_in2_max);
-        device_create_file(&new_client->dev, &dev_attr_in3_input);
-        device_create_file(&new_client->dev, &dev_attr_in3_min);
-        device_create_file(&new_client->dev, &dev_attr_in3_max);
-        device_create_file(&new_client->dev, &dev_attr_in4_input);
-        device_create_file(&new_client->dev, &dev_attr_in4_min);
-        device_create_file(&new_client->dev, &dev_attr_in4_max);
-        device_create_file(&new_client->dev, &dev_attr_in5_input);
-        device_create_file(&new_client->dev, &dev_attr_in5_min);
-        device_create_file(&new_client->dev, &dev_attr_in5_max);
-        device_create_file(&new_client->dev, &dev_attr_temp1_max);
-        device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in0_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in0_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in0_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in1_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in1_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in1_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in2_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in2_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in2_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in3_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in3_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in3_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in4_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in4_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in4_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in5_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in5_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_in5_max.dev_attr);
         device_create_file(&new_client->dev, &dev_attr_temp1_input);
-        device_create_file(&new_client->dev, &dev_attr_fan1_input);
-        device_create_file(&new_client->dev, &dev_attr_fan1_div);
-        device_create_file(&new_client->dev, &dev_attr_fan1_min);
-        device_create_file(&new_client->dev, &dev_attr_fan2_input);
-        device_create_file(&new_client->dev, &dev_attr_fan2_div);
-        device_create_file(&new_client->dev, &dev_attr_fan2_min);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_temp1_max.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_temp1_max_hyst.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan1_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan1_div.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan1_min.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan2_input.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan2_div.dev_attr);
+        device_create_file(&new_client->dev,
+                        &sensor_dev_attr_fan2_min.dev_attr);
         device_create_file(&new_client->dev, &dev_attr_alarms);
         device_create_file(&new_client->dev, &dev_attr_aout_output);
         device_create_file(&new_client->dev, &dev_attr_chassis_clear);
@@ -654,8 +645,8 @@ static int adm9240_detach_client(struct i2c_client *client)
 static void adm9240_init_client(struct i2c_client *client)
 {
         struct adm9240_data *data = i2c_get_clientdata(client);
-        u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG);
-        u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3;
+        u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG);
+        u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3;
 
         data->vrm = vid_which_vrm(); /* need this to report vid as mV */
 
@@ -672,18 +663,22 @@ static void adm9240_init_client(struct i2c_client *client)
 
                 for (i = 0; i < 6; i++)
                 {
-                        adm9240_write_value(client,
+                        i2c_smbus_write_byte_data(client,
                                         ADM9240_REG_IN_MIN(i), 0);
-                        adm9240_write_value(client,
+                        i2c_smbus_write_byte_data(client,
                                         ADM9240_REG_IN_MAX(i), 255);
                 }
-                adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255);
-                adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255);
-                adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127);
-                adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127);
+                i2c_smbus_write_byte_data(client,
+                                ADM9240_REG_FAN_MIN(0), 255);
+                i2c_smbus_write_byte_data(client,
+                                ADM9240_REG_FAN_MIN(1), 255);
+                i2c_smbus_write_byte_data(client,
+                                ADM9240_REG_TEMP_MAX(0), 127);
+                i2c_smbus_write_byte_data(client,
+                                ADM9240_REG_TEMP_MAX(1), 127);
 
                 /* start measurement cycle */
-                adm9240_write_value(client, ADM9240_REG_CONFIG, 1);
+                i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1);
 
                 dev_info(&client->dev, "cold start: config was 0x%02x "
                                 "mode %u\n", conf, mode);
@@ -704,25 +699,25 @@ static struct adm9240_data *adm9240_update_device(struct device *dev)
 
                 for (i = 0; i < 6; i++) /* read voltages */
                 {
-                        data->in[i] = adm9240_read_value(client,
+                        data->in[i] = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_IN(i));
                 }
-                data->alarms = adm9240_read_value(client,
+                data->alarms = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_INT(0)) |
-                                        adm9240_read_value(client,
+                                        i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_INT(1)) << 8;
 
                 /* read temperature: assume temperature changes less than
                  * 0.5'C per two measurement cycles thus ignore possible
                  * but unlikely aliasing error on lsb reading. --Grant */
-                data->temp = ((adm9240_read_value(client,
+                data->temp = ((i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_TEMP) << 8) |
-                                        adm9240_read_value(client,
+                                        i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_TEMP_CONF)) / 128;
 
                 for (i = 0; i < 2; i++) /* read fans */
                 {
-                        data->fan[i] = adm9240_read_value(client,
+                        data->fan[i] = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_FAN(i));
 
                         /* adjust fan clock divider on overflow */
@@ -747,30 +742,30 @@ static struct adm9240_data *adm9240_update_device(struct device *dev)
 
                 for (i = 0; i < 6; i++)
                 {
-                        data->in_min[i] = adm9240_read_value(client,
+                        data->in_min[i] = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_IN_MIN(i));
-                        data->in_max[i] = adm9240_read_value(client,
+                        data->in_max[i] = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_IN_MAX(i));
                 }
                 for (i = 0; i < 2; i++)
                 {
-                        data->fan_min[i] = adm9240_read_value(client,
+                        data->fan_min[i] = i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_FAN_MIN(i));
                 }
-                data->temp_high = adm9240_read_value(client,
-                                ADM9240_REG_TEMP_HIGH);
-                data->temp_hyst = adm9240_read_value(client,
-                                ADM9240_REG_TEMP_HYST);
+                data->temp_max[0] = i2c_smbus_read_byte_data(client,
+                                ADM9240_REG_TEMP_MAX(0));
+                data->temp_max[1] = i2c_smbus_read_byte_data(client,
+                                ADM9240_REG_TEMP_MAX(1));
 
                 /* read fan divs and 5-bit VID */
-                i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+                i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
                 data->fan_div[0] = (i >> 4) & 3;
                 data->fan_div[1] = (i >> 6) & 3;
                 data->vid = i & 0x0f;
-                data->vid |= (adm9240_read_value(client,
+                data->vid |= (i2c_smbus_read_byte_data(client,
                                         ADM9240_REG_VID4) & 1) << 4;
                 /* read analog out */
-                data->aout = adm9240_read_value(client,
+                data->aout = i2c_smbus_read_byte_data(client,
                                 ADM9240_REG_ANALOG_OUT);
 
                 data->last_updated_config = jiffies;
diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c
index 8e34855a6274..52c469722a65 100644
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -629,19 +629,17 @@ static int asb100_detect_subclients(struct i2c_adapter *adapter, int address,
         int i, id, err;
         struct asb100_data *data = i2c_get_clientdata(new_client);
 
-        data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!(data->lm75[0])) {
                 err = -ENOMEM;
                 goto ERROR_SC_0;
         }
-        memset(data->lm75[0], 0x00, sizeof(struct i2c_client));
 
-        data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!(data->lm75[1])) {
                 err = -ENOMEM;
                 goto ERROR_SC_1;
         }
-        memset(data->lm75[1], 0x00, sizeof(struct i2c_client));
 
         id = i2c_adapter_id(adapter);
 
@@ -724,12 +722,11 @@ static int asb100_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access asb100_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
-                pr_debug("asb100.o: detect failed, kmalloc failed!\n");
+        if (!(data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
+                pr_debug("asb100.o: detect failed, kzalloc failed!\n");
                 err = -ENOMEM;
                 goto ERROR0;
         }
-        memset(data, 0, sizeof(struct asb100_data));
 
         new_client = &data->client;
         init_MUTEX(&data->lock);
diff --git a/drivers/hwmon/atxp1.c b/drivers/hwmon/atxp1.c
index deb4d34c9539..53324f56404e 100644
--- a/drivers/hwmon/atxp1.c
+++ b/drivers/hwmon/atxp1.c
@@ -253,6 +253,8 @@ static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
 
 static int atxp1_attach_adapter(struct i2c_adapter *adapter)
 {
+        if (!(adapter->class & I2C_CLASS_HWMON))
+                return 0;
         return i2c_probe(adapter, &addr_data, &atxp1_detect);
 };
 
@@ -266,12 +268,11 @@ static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
 
-        memset(data, 0, sizeof(struct atxp1_data));
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
 
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c
index b0199e063d0e..34f71b7c7f37 100644
--- a/drivers/hwmon/ds1621.c
+++ b/drivers/hwmon/ds1621.c
@@ -180,12 +180,14 @@ static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
 
 static int ds1621_attach_adapter(struct i2c_adapter *adapter)
 {
+        if (!(adapter->class & I2C_CLASS_HWMON))
+                return 0;
         return i2c_probe(adapter, &addr_data, ds1621_detect);
 }
 
 /* This function is called by i2c_probe */
-int ds1621_detect(struct i2c_adapter *adapter, int address,
-                  int kind)
+static int ds1621_detect(struct i2c_adapter *adapter, int address,
+                         int kind)
 {
         int conf, temp;
         struct i2c_client *new_client;
@@ -200,11 +202,10 @@ int ds1621_detect(struct i2c_adapter *adapter, int address,
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet.
            But it allows us to access ds1621_{read,write}_value. */
-        if (!(data = kmalloc(sizeof(struct ds1621_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct ds1621_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct ds1621_data));
         
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/fscher.c b/drivers/hwmon/fscher.c
index eef6061d786b..a02e1c34c757 100644
--- a/drivers/hwmon/fscher.c
+++ b/drivers/hwmon/fscher.c
@@ -303,11 +303,10 @@ static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
         /* OK. For now, we presume we have a valid client. We now create the
          * client structure, even though we cannot fill it completely yet.
          * But it allows us to access i2c_smbus_read_byte_data. */
-        if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct fscher_data));
 
         /* The common I2C client data is placed right before the
          * Hermes-specific data. */
diff --git a/drivers/hwmon/fscpos.c b/drivers/hwmon/fscpos.c
index 5fc77a5fed07..64e4edc64f8d 100644
--- a/drivers/hwmon/fscpos.c
+++ b/drivers/hwmon/fscpos.c
@@ -438,7 +438,7 @@ static int fscpos_attach_adapter(struct i2c_adapter *adapter)
         return i2c_probe(adapter, &addr_data, fscpos_detect);
 }
 
-int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
+static int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         struct i2c_client *new_client;
         struct fscpos_data *data;
@@ -453,11 +453,10 @@ int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
          * But it allows us to access fscpos_{read,write}_value.
          */
 
-        if (!(data = kmalloc(sizeof(struct fscpos_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct fscpos_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct fscpos_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/gl518sm.c b/drivers/hwmon/gl518sm.c
index 256b9323c84b..2f178dbe3d87 100644
--- a/drivers/hwmon/gl518sm.c
+++ b/drivers/hwmon/gl518sm.c
@@ -365,11 +365,10 @@ static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access gl518_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct gl518_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c
index 12fd757066fc..c39ba1239426 100644
--- a/drivers/hwmon/gl520sm.c
+++ b/drivers/hwmon/gl520sm.c
@@ -536,11 +536,10 @@ static int gl520_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access gl520_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct gl520_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 53cc2b6d6385..6c41e25e670b 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -2,7 +2,7 @@
     it87.c - Part of lm_sensors, Linux kernel modules for hardware
              monitoring.
 
-    Supports: IT8705F  Super I/O chip w/LPC interface & SMBus
+    Supports: IT8705F  Super I/O chip w/LPC interface
               IT8712F  Super I/O chip w/LPC interface & SMBus
               Sis950   A clone of the IT8705F
 
@@ -47,7 +47,7 @@
 /* Addresses to scan */
 static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
                                         0x2e, 0x2f, I2C_CLIENT_END };
-static unsigned short isa_address = 0x290;
+static unsigned short isa_address;
 
 /* Insmod parameters */
 I2C_CLIENT_INSMOD_2(it87, it8712);
@@ -706,7 +706,7 @@ static int it87_isa_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* SuperIO detection - will change isa_address if a chip is found */
-static int __init it87_find(int *address)
+static int __init it87_find(unsigned short *address)
 {
         int err = -ENODEV;
 
@@ -738,7 +738,7 @@ exit:
 }
 
 /* This function is called by i2c_probe */
-int it87_detect(struct i2c_adapter *adapter, int address, int kind)
+static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         int i;
         struct i2c_client *new_client;
@@ -757,42 +757,14 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind)
                 if (!request_region(address, IT87_EXTENT, it87_isa_driver.name))
                         goto ERROR0;
 
-        /* Probe whether there is anything available on this address. Already
-           done for SMBus and Super-I/O clients */
-        if (kind < 0) {
-                if (is_isa && !chip_type) {
-#define REALLY_SLOW_IO
-                        /* We need the timeouts for at least some IT87-like chips. But only
-                           if we read 'undefined' registers. */
-                        i = inb_p(address + 1);
-                        if (inb_p(address + 2) != i
-                         || inb_p(address + 3) != i
-                         || inb_p(address + 7) != i) {
-                                err = -ENODEV;
-                                goto ERROR1;
-                        }
-#undef REALLY_SLOW_IO
-
-                        /* Let's just hope nothing breaks here */
-                        i = inb_p(address + 5) & 0x7f;
-                        outb_p(~i & 0x7f, address + 5);
-                        if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) {
-                                outb_p(i, address + 5);
-                                err = -ENODEV;
-                                goto ERROR1;
-                        }
-                }
-        }
-
-        /* OK. For now, we presume we have a valid client. We now create the
+        /* For now, we presume we have a valid client. We create the
            client structure, even though we cannot fill it completely yet.
            But it allows us to access it87_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct it87_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR1;
         }
-        memset(data, 0, sizeof(struct it87_data));
 
         new_client = &data->client;
         if (is_isa)
@@ -1182,20 +1154,18 @@ static struct it87_data *it87_update_device(struct device *dev)
 
 static int __init sm_it87_init(void)
 {
-        int addr, res;
-
-        if (!it87_find(&addr)) {
-                isa_address = addr;
-        }
+        int res;
 
         res = i2c_add_driver(&it87_driver);
         if (res)
                 return res;
 
-        res = i2c_isa_add_driver(&it87_isa_driver);
-        if (res) {
-                i2c_del_driver(&it87_driver);
-                return res;
+        if (!it87_find(&isa_address)) {
+                res = i2c_isa_add_driver(&it87_isa_driver);
+                if (res) {
+                        i2c_del_driver(&it87_driver);
+                        return res;
+                }
         }
 
         return 0;
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index be5c7095ecbb..954ec2497249 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -375,11 +375,10 @@ static int lm63_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct lm63_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm63_data));
 
         /* The common I2C client data is placed right before the
            LM63-specific data. */
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 9a3ebdf583f4..d70f4c8fc1e6 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -127,11 +127,10 @@ static int lm75_detect(struct i2c_adapter *adapter, int address, int kind)
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet.
            But it allows us to access lm75_{read,write}_value. */
-        if (!(data = kmalloc(sizeof(struct lm75_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm75_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm75_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index 866eab96a6f6..9380fda7dcd1 100644
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -226,11 +226,10 @@ static int lm77_detect(struct i2c_adapter *adapter, int address, int kind)
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet.
            But it allows us to access lm77_{read,write}_value. */
-        if (!(data = kmalloc(sizeof(struct lm77_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm77_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm77_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index f6730dc3573b..bde0cda9477e 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -480,7 +480,7 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
+static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         int i, err;
         struct i2c_client *new_client;
@@ -540,11 +540,10 @@ int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access lm78_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR1;
         }
-        memset(data, 0, sizeof(struct lm78_data));
 
         new_client = &data->client;
         if (is_isa)
@@ -726,7 +725,6 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
                 return i2c_smbus_write_byte_data(client, reg, value);
 }
 
-/* Called when we have found a new LM78. It should set limits, etc. */
 static void lm78_init_client(struct i2c_client *client)
 {
         u8 config = lm78_read_value(client, LM78_REG_CONFIG);
diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c
index 83af8b3a0cac..c359fdea211e 100644
--- a/drivers/hwmon/lm80.c
+++ b/drivers/hwmon/lm80.c
@@ -393,7 +393,7 @@ static int lm80_attach_adapter(struct i2c_adapter *adapter)
         return i2c_probe(adapter, &addr_data, lm80_detect);
 }
 
-int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
+static int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         int i, cur;
         struct i2c_client *new_client;
@@ -407,11 +407,10 @@ int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet.
            But it allows us to access lm80_{read,write}_value. */
-        if (!(data = kmalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm80_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c
index d74b2c20c719..9a70611a9f69 100644
--- a/drivers/hwmon/lm83.c
+++ b/drivers/hwmon/lm83.c
@@ -230,11 +230,10 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct lm83_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm83_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm83_data));
 
         /* The common I2C client data is placed right after the
          * LM83-specific data. */
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index ab214df9624b..d1070ed2bee6 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -1007,14 +1007,14 @@ temp_auto(1);
 temp_auto(2);
 temp_auto(3);
 
-int lm85_attach_adapter(struct i2c_adapter *adapter)
+static int lm85_attach_adapter(struct i2c_adapter *adapter)
 {
         if (!(adapter->class & I2C_CLASS_HWMON))
                 return 0;
         return i2c_probe(adapter, &addr_data, lm85_detect);
 }
 
-int lm85_detect(struct i2c_adapter *adapter, int address,
+static int lm85_detect(struct i2c_adapter *adapter, int address,
                 int kind)
 {
         int company, verstep ;
@@ -1033,11 +1033,10 @@ int lm85_detect(struct i2c_adapter *adapter, int address,
            client structure, even though we cannot fill it completely yet.
            But it allows us to access lm85_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR0;
         }
-        memset(data, 0, sizeof(struct lm85_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -1236,7 +1235,7 @@ int lm85_detect(struct i2c_adapter *adapter, int address,
         return err;
 }
 
-int lm85_detach_client(struct i2c_client *client)
+static int lm85_detach_client(struct i2c_client *client)
 {
         struct lm85_data *data = i2c_get_clientdata(client);
         hwmon_device_unregister(data->class_dev);
@@ -1246,7 +1245,7 @@ int lm85_detach_client(struct i2c_client *client)
 }
 
 
-int lm85_read_value(struct i2c_client *client, u8 reg)
+static int lm85_read_value(struct i2c_client *client, u8 reg)
 {
         int res;
 
@@ -1276,7 +1275,7 @@ int lm85_read_value(struct i2c_client *client, u8 reg)
         return res ;
 }
 
-int lm85_write_value(struct i2c_client *client, u8 reg, int value)
+static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
 {
         int res ;
 
@@ -1305,7 +1304,7 @@ int lm85_write_value(struct i2c_client *client, u8 reg, int value)
         return res ;
 }
 
-void lm85_init_client(struct i2c_client *client)
+static void lm85_init_client(struct i2c_client *client)
 {
         int value;
         struct lm85_data *data = i2c_get_clientdata(client);
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index dca996de4c33..eeec18177861 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -554,11 +554,10 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct lm87_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm87_data));
 
         /* The common I2C client data is placed right before the
            LM87-specific data. */
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 14de05fcd431..83cf2e1b09f5 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -31,7 +31,7 @@
  * Devices. That chip is similar to the LM90, with a few differences
  * that are not handled by this driver. Complete datasheet can be
  * obtained from Analog's website at:
- *   http://products.analog.com/products/info.asp?product=ADM1032
+ *   http://www.analog.com/en/prod/0,2877,ADM1032,00.html
  * Among others, it has a higher accuracy than the LM90, much like the
  * LM86 does.
  *
@@ -49,7 +49,7 @@
  * register values are decoded differently) it is ignored by this
  * driver. Complete datasheet can be obtained from Analog's website
  * at:
- *   http://products.analog.com/products/info.asp?product=ADT7461
+ *   http://www.analog.com/en/prod/0,2877,ADT7461,00.html
  *
  * Since the LM90 was the first chipset supported by this driver, most
  * comments will refer to this chipset, but are actually general and
@@ -83,10 +83,10 @@
  * Addresses to scan
  * Address is fully defined internally and cannot be changed except for
  * MAX6659.
- * LM86, LM89, LM90, LM99, ADM1032, MAX6657 and MAX6658 have address 0x4c.
- * LM89-1, and LM99-1 have address 0x4d.
+ * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6657 and MAX6658
+ * have address 0x4c.
+ * ADM1032-2, ADT7461-2, LM89-1, and LM99-1 have address 0x4d.
  * MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported).
- * ADT7461 always has address 0x4c.
  */
 
 static unsigned short normal_i2c[] = { 0x4c, 0x4d, I2C_CLIENT_END };
@@ -345,10 +345,74 @@ static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
 static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4);
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
+/* pec used for ADM1032 only */
+static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
+                        char *buf)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC));
+}
+
+static ssize_t set_pec(struct device *dev, struct device_attribute *dummy,
+                       const char *buf, size_t count)
+{
+        struct i2c_client *client = to_i2c_client(dev);
+        long val = simple_strtol(buf, NULL, 10);
+
+        switch (val) {
+        case 0:
+                client->flags &= ~I2C_CLIENT_PEC;
+                break;
+        case 1:
+                client->flags |= I2C_CLIENT_PEC;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return count;
+}
+
+static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec);
+
 /*
  * Real code
  */
 
+/* The ADM1032 supports PEC but not on write byte transactions, so we need
+   to explicitely ask for a transaction without PEC. */
+static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value)
+{
+        return i2c_smbus_xfer(client->adapter, client->addr,
+                              client->flags & ~I2C_CLIENT_PEC,
+                              I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
+}
+
+/* It is assumed that client->update_lock is held (unless we are in
+   detection or initialization steps). This matters when PEC is enabled,
+   because we don't want the address pointer to change between the write
+   byte and the read byte transactions. */
+static int lm90_read_reg(struct i2c_client* client, u8 reg, u8 *value)
+{
+        int err;
+
+        if (client->flags & I2C_CLIENT_PEC) {
+                err = adm1032_write_byte(client, reg);
+                if (err >= 0)
+                        err = i2c_smbus_read_byte(client);
+        } else
+                err = i2c_smbus_read_byte_data(client, reg);
+
+        if (err < 0) {
+                dev_warn(&client->dev, "Register %#02x read failed (%d)\n",
+                         reg, err);
+                return err;
+        }
+        *value = err;
+
+        return 0;
+}
+
 static int lm90_attach_adapter(struct i2c_adapter *adapter)
 {
         if (!(adapter->class & I2C_CLASS_HWMON))
@@ -370,11 +434,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct lm90_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm90_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm90_data));
 
         /* The common I2C client data is placed right before the
            LM90-specific data. */
@@ -403,20 +466,22 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
         if (kind < 0) { /* detection and identification */
                 u8 man_id, chip_id, reg_config1, reg_convrate;
 
-                man_id = i2c_smbus_read_byte_data(new_client,
-                         LM90_REG_R_MAN_ID);
-                chip_id = i2c_smbus_read_byte_data(new_client,
-                          LM90_REG_R_CHIP_ID);
-                reg_config1 = i2c_smbus_read_byte_data(new_client,
-                              LM90_REG_R_CONFIG1);
-                reg_convrate = i2c_smbus_read_byte_data(new_client,
-                               LM90_REG_R_CONVRATE);
+                if (lm90_read_reg(new_client, LM90_REG_R_MAN_ID,
+                                  &man_id) < 0
+                 || lm90_read_reg(new_client, LM90_REG_R_CHIP_ID,
+                                  &chip_id) < 0
+                 || lm90_read_reg(new_client, LM90_REG_R_CONFIG1,
+                                  &reg_config1) < 0
+                 || lm90_read_reg(new_client, LM90_REG_R_CONVRATE,
+                                  &reg_convrate) < 0)
+                        goto exit_free;
                 
                 if (man_id == 0x01) { /* National Semiconductor */
                         u8 reg_config2;
 
-                        reg_config2 = i2c_smbus_read_byte_data(new_client,
-                                      LM90_REG_R_CONFIG2);
+                        if (lm90_read_reg(new_client, LM90_REG_R_CONFIG2,
+                                          &reg_config2) < 0)
+                                goto exit_free;
 
                         if ((reg_config1 & 0x2A) == 0x00
                          && (reg_config2 & 0xF8) == 0x00
@@ -435,14 +500,12 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
                         }
                 } else
                 if (man_id == 0x41) { /* Analog Devices */
-                        if (address == 0x4C
-                         && (chip_id & 0xF0) == 0x40 /* ADM1032 */
+                        if ((chip_id & 0xF0) == 0x40 /* ADM1032 */
                          && (reg_config1 & 0x3F) == 0x00
                          && reg_convrate <= 0x0A) {
                                 kind = adm1032;
                         } else
-                        if (address == 0x4c
-                         && chip_id == 0x51 /* ADT7461 */
+                        if (chip_id == 0x51 /* ADT7461 */
                          && (reg_config1 & 0x1F) == 0x00 /* check compat mode */
                          && reg_convrate <= 0x0A) {
                                 kind = adt7461;
@@ -477,6 +540,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
                 name = "lm90";
         } else if (kind == adm1032) {
                 name = "adm1032";
+                /* The ADM1032 supports PEC, but only if combined
+                   transactions are not used. */
+                if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+                        new_client->flags |= I2C_CLIENT_PEC;
         } else if (kind == lm99) {
                 name = "lm99";
         } else if (kind == lm86) {
@@ -529,6 +596,9 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
                            &sensor_dev_attr_temp2_crit_hyst.dev_attr);
         device_create_file(&new_client->dev, &dev_attr_alarms);
 
+        if (new_client->flags & I2C_CLIENT_PEC)
+                device_create_file(&new_client->dev, &dev_attr_pec);
+
         return 0;
 
 exit_detach:
@@ -548,7 +618,10 @@ static void lm90_init_client(struct i2c_client *client)
          */
         i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
                                   5); /* 2 Hz */
-        config = i2c_smbus_read_byte_data(client, LM90_REG_R_CONFIG1);
+        if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) {
+                dev_warn(&client->dev, "Initialization failed!\n");
+                return;
+        }
         if (config & 0x40)
                 i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
                                           config & 0xBF); /* run */
@@ -576,21 +649,15 @@ static struct lm90_data *lm90_update_device(struct device *dev)
         down(&data->update_lock);
 
         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
-                u8 oldh, newh;
+                u8 oldh, newh, l;
 
                 dev_dbg(&client->dev, "Updating lm90 data.\n");
-                data->temp8[0] = i2c_smbus_read_byte_data(client,
-                                 LM90_REG_R_LOCAL_TEMP);
-                data->temp8[1] = i2c_smbus_read_byte_data(client,
-                                 LM90_REG_R_LOCAL_LOW);
-                data->temp8[2] = i2c_smbus_read_byte_data(client,
-                                 LM90_REG_R_LOCAL_HIGH);
-                data->temp8[3] = i2c_smbus_read_byte_data(client,
-                                 LM90_REG_R_LOCAL_CRIT);
-                data->temp8[4] = i2c_smbus_read_byte_data(client,
-                                 LM90_REG_R_REMOTE_CRIT);
-                data->temp_hyst = i2c_smbus_read_byte_data(client,
-                                  LM90_REG_R_TCRIT_HYST);
+                lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP, &data->temp8[0]);
+                lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[1]);
+                lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[2]);
+                lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[3]);
+                lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[4]);
+                lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
 
                 /*
                  * There is a trick here. We have to read two registers to
@@ -606,36 +673,20 @@ static struct lm90_data *lm90_update_device(struct device *dev)
                  * then we have a valid reading. Else we have to read the low
                  * byte again, and now we believe we have a correct reading.
                  */
-                oldh = i2c_smbus_read_byte_data(client,
-                       LM90_REG_R_REMOTE_TEMPH);
-                data->temp11[0] = i2c_smbus_read_byte_data(client,
-                                  LM90_REG_R_REMOTE_TEMPL);
-                newh = i2c_smbus_read_byte_data(client,
-                       LM90_REG_R_REMOTE_TEMPH);
-                if (newh != oldh) {
-                        data->temp11[0] = i2c_smbus_read_byte_data(client,
-                                          LM90_REG_R_REMOTE_TEMPL);
-#ifdef DEBUG
-                        oldh = i2c_smbus_read_byte_data(client,
-                               LM90_REG_R_REMOTE_TEMPH);
-                        /* oldh is actually newer */
-                        if (newh != oldh)
-                                dev_warn(&client->dev, "Remote temperature may be "
-                                         "wrong.\n");
-#endif
-                }
-                data->temp11[0] |= (newh << 8);
-
-                data->temp11[1] = (i2c_smbus_read_byte_data(client,
-                                   LM90_REG_R_REMOTE_LOWH) << 8) +
-                                   i2c_smbus_read_byte_data(client,
-                                   LM90_REG_R_REMOTE_LOWL);
-                data->temp11[2] = (i2c_smbus_read_byte_data(client,
-                                   LM90_REG_R_REMOTE_HIGHH) << 8) +
-                                   i2c_smbus_read_byte_data(client,
-                                   LM90_REG_R_REMOTE_HIGHL);
-                data->alarms = i2c_smbus_read_byte_data(client,
-                               LM90_REG_R_STATUS);
+                if (lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &oldh) == 0
+                 && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0
+                 && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &newh) == 0
+                 && (newh == oldh
+                  || lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0))
+                        data->temp11[0] = (newh << 8) | l;
+
+                if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &newh) == 0
+                 && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, &l) == 0)
+                        data->temp11[1] = (newh << 8) | l;
+                if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &newh) == 0
+                 && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, &l) == 0)
+                        data->temp11[2] = (newh << 8) | l;
+                lm90_read_reg(client, LM90_REG_R_STATUS, &data->alarms);
 
                 data->last_updated = jiffies;
                 data->valid = 1;
diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c
index 647b7c7cd575..7a4b3701ed1a 100644
--- a/drivers/hwmon/lm92.c
+++ b/drivers/hwmon/lm92.c
@@ -300,11 +300,10 @@ static int lm92_detect(struct i2c_adapter *adapter, int address, int kind)
                                             | I2C_FUNC_SMBUS_WORD_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct lm92_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct lm92_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct lm92_data));
 
         /* Fill in enough client fields so that we can read from the chip,
            which is required for identication */
diff --git a/drivers/hwmon/max1619.c b/drivers/hwmon/max1619.c
index 16bf71f3a04d..6a82ffae1bfd 100644
--- a/drivers/hwmon/max1619.c
+++ b/drivers/hwmon/max1619.c
@@ -197,11 +197,10 @@ static int max1619_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct max1619_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct max1619_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct max1619_data));
 
         /* The common I2C client data is placed right before the
            MAX1619-specific data. */
diff --git a/drivers/hwmon/pc87360.c b/drivers/hwmon/pc87360.c
index cf2a35799c7c..17f745a23d04 100644
--- a/drivers/hwmon/pc87360.c
+++ b/drivers/hwmon/pc87360.c
@@ -754,9 +754,8 @@ static int pc87360_detect(struct i2c_adapter *adapter)
         const char *name = "pc87360";
         int use_thermistors = 0;
 
-        if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
+        if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
                 return -ENOMEM;
-        memset(data, 0x00, sizeof(struct pc87360_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 21aa9a41f62c..9c6cadec1087 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -518,11 +518,10 @@ static int sis5595_detect(struct i2c_adapter *adapter)
                         goto exit_release;
         }
 
-        if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit_release;
         }
-        memset(data, 0, sizeof(struct sis5595_data));
 
         new_client = &data->client;
         new_client->addr = address;
diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index 7fe71576dea4..2a3e21b5b6b4 100644
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -244,11 +244,10 @@ static int smsc47b397_detect(struct i2c_adapter *adapter)
                 return -EBUSY;
         }
 
-        if (!(data = kmalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto error_release;
         }
-        memset(data, 0x00, sizeof(struct smsc47b397_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -299,7 +298,7 @@ static int __init smsc47b397_find(unsigned short *addr)
         superio_enter();
         id = superio_inb(SUPERIO_REG_DEVID);
 
-        if (id != 0x6f) {
+        if ((id != 0x6f) && (id != 0x81)) {
                 superio_exit();
                 return -ENODEV;
         }
@@ -310,8 +309,9 @@ static int __init smsc47b397_find(unsigned short *addr)
         *addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8)
                  |  superio_inb(SUPERIO_REG_BASE_LSB);
 
-        printk(KERN_INFO "smsc47b397: found SMSC LPC47B397-NC "
-                "(base address 0x%04x, revision %u)\n", *addr, rev);
+        printk(KERN_INFO "smsc47b397: found SMSC %s "
+                "(base address 0x%04x, revision %u)\n",
+                id == 0x81 ? "SCH5307-NS" : "LPC47B397-NC", *addr, rev);
 
         superio_exit();
         return 0;
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index c9cc683eba4a..5905c1af88f2 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -3,7 +3,7 @@
                  for hardware monitoring
 
     Supports the SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x,
-    LPC47M15x and LPC47M192 Super-I/O chips.
+    LPC47M15x, LPC47M192 and LPC47M997 Super-I/O chips.
 
     Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
     Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
@@ -356,6 +356,8 @@ static int __init smsc47m1_find(unsigned short *addr)
          * 0x5F) and LPC47B27x (device id 0x51) have fan control.
          * The LPC47M15x and LPC47M192 chips "with hardware monitoring block"
          * can do much more besides (device id 0x60).
+         * The LPC47M997 is undocumented, but seems to be compatible with
+         * the LPC47M192, and has the same device id.
          */
         if (val == 0x51)
                 printk(KERN_INFO "smsc47m1: Found SMSC LPC47B27x\n");
@@ -364,7 +366,8 @@ static int __init smsc47m1_find(unsigned short *addr)
         else if (val == 0x5F)
                 printk(KERN_INFO "smsc47m1: Found SMSC LPC47M14x\n");
         else if (val == 0x60)
-                printk(KERN_INFO "smsc47m1: Found SMSC LPC47M15x/LPC47M192\n");
+                printk(KERN_INFO "smsc47m1: Found SMSC "
+                       "LPC47M15x/LPC47M192/LPC47M997\n");
         else {
                 superio_exit();
                 return -ENODEV;
@@ -396,11 +399,10 @@ static int smsc47m1_detect(struct i2c_adapter *adapter)
                 return -EBUSY;
         }
 
-        if (!(data = kmalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto error_release;
         }
-        memset(data, 0x00, sizeof(struct smsc47m1_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c
index 05ddc88e7dd2..6f696f897176 100644
--- a/drivers/hwmon/via686a.c
+++ b/drivers/hwmon/via686a.c
@@ -44,7 +44,7 @@
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static unsigned short force_addr = 0;
+static unsigned short force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr,
                  "Initialize the base address of the sensors");
@@ -198,7 +198,7 @@ static inline u8 FAN_TO_REG(long rpm, int div)
  but the function is very linear in the useful range (0-80 deg C), so
  we'll just use linear interpolation for 10-bit readings.)  So, tempLUT
  is the temp at via register values 0-255: */
-static const long tempLUT[] =
+static const s16 tempLUT[] =
 { -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
         -503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
         -362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
@@ -270,7 +270,7 @@ static inline u8 TEMP_TO_REG(long val)
 }
 
 /* for 8-bit temperature hyst and over registers */
-#define TEMP_FROM_REG(val) (tempLUT[(val)] * 100)
+#define TEMP_FROM_REG(val)      ((long)tempLUT[val] * 100)
 
 /* for 10-bit temperature readings */
 static inline long TEMP_FROM_REG10(u16 val)
@@ -589,10 +589,8 @@ static int via686a_detect(struct i2c_adapter *adapter)
         u16 val;
 
         /* 8231 requires multiple of 256, we enforce that on 686 as well */
-        if (force_addr)
-                address = force_addr & 0xFF00;
-
         if (force_addr) {
+                address = force_addr & 0xFF00;
                 dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n",
                          address);
                 if (PCIBIOS_SUCCESSFUL !=
@@ -603,11 +601,17 @@ static int via686a_detect(struct i2c_adapter *adapter)
             pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val))
                 return -ENODEV;
         if (!(val & 0x0001)) {
-                dev_warn(&adapter->dev, "enabling sensors\n");
-                if (PCIBIOS_SUCCESSFUL !=
-                    pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
-                                          val | 0x0001))
+                if (force_addr) {
+                        dev_info(&adapter->dev, "enabling sensors\n");
+                        if (PCIBIOS_SUCCESSFUL !=
+                            pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
+                                                  val | 0x0001))
+                                return -ENODEV;
+                } else {
+                        dev_warn(&adapter->dev, "sensors disabled - enable "
+                                 "with force_addr=0x%x\n", address);
                         return -ENODEV;
+                }
         }
 
         /* Reserve the ISA region */
@@ -617,11 +621,10 @@ static int via686a_detect(struct i2c_adapter *adapter)
                 return -ENODEV;
         }
 
-        if (!(data = kmalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit_release;
         }
-        memset(data, 0, sizeof(struct via686a_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -708,7 +711,6 @@ static int via686a_detach_client(struct i2c_client *client)
         return 0;
 }
 
-/* Called when we have found a new VIA686A. Set limits, etc. */
 static void via686a_init_client(struct i2c_client *client)
 {
         u8 reg;
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index b60efe8f8b26..eee22a57e929 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -105,7 +105,9 @@ superio_exit(void)
  * ISA constants
  */
 
-#define REGION_LENGTH           8
+#define REGION_ALIGNMENT        ~7
+#define REGION_OFFSET           5
+#define REGION_LENGTH           2
 #define ADDR_REG_OFFSET         5
 #define DATA_REG_OFFSET         6
 
@@ -673,16 +675,16 @@ static int w83627ehf_detect(struct i2c_adapter *adapter)
         struct w83627ehf_data *data;
         int i, err = 0;
 
-        if (!request_region(address, REGION_LENGTH, w83627ehf_driver.name)) {
+        if (!request_region(address + REGION_OFFSET, REGION_LENGTH,
+                            w83627ehf_driver.name)) {
                 err = -EBUSY;
                 goto exit;
         }
 
-        if (!(data = kmalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit_release;
         }
-        memset(data, 0, sizeof(struct w83627ehf_data));
 
         client = &data->client;
         i2c_set_clientdata(client, data);
@@ -762,7 +764,7 @@ exit_detach:
 exit_free:
         kfree(data);
 exit_release:
-        release_region(address, REGION_LENGTH);
+        release_region(address + REGION_OFFSET, REGION_LENGTH);
 exit:
         return err;
 }
@@ -776,7 +778,7 @@ static int w83627ehf_detach_client(struct i2c_client *client)
 
         if ((err = i2c_detach_client(client)))
                 return err;
-        release_region(client->addr, REGION_LENGTH);
+        release_region(client->addr + REGION_OFFSET, REGION_LENGTH);
         kfree(data);
 
         return 0;
@@ -807,7 +809,7 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
         superio_select(W83627EHF_LD_HWM);
         val = (superio_inb(SIO_REG_ADDR) << 8)
             | superio_inb(SIO_REG_ADDR + 1);
-        *addr = val & ~(REGION_LENGTH - 1);
+        *addr = val & REGION_ALIGNMENT;
         if (*addr == 0) {
                 superio_exit();
                 return -ENODEV;
diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index 3479dc5208e2..70ef926c3bd8 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -142,10 +142,14 @@ superio_exit(void)
 #define WINB_BASE_REG 0x60
 /* Constants specified below */
 
-/* Length of ISA address segment */
-#define WINB_EXTENT 8
+/* Alignment of the base address */
+#define WINB_ALIGNMENT          ~7
 
-/* Where are the ISA address/data registers relative to the base address */
+/* Offset & size of I/O region we are interested in */
+#define WINB_REGION_OFFSET      5
+#define WINB_REGION_SIZE        2
+
+/* Where are the sensors address/data registers relative to the base address */
 #define W83781D_ADDR_REG_OFFSET 5
 #define W83781D_DATA_REG_OFFSET 6
 
@@ -197,7 +201,6 @@ superio_exit(void)
 
 #define W83627HF_REG_PWM1 0x5A
 #define W83627HF_REG_PWM2 0x5B
-#define W83627HF_REG_PWMCLK12 0x5C
 
 #define W83627THF_REG_PWM1              0x01    /* 697HF and 637HF too */
 #define W83627THF_REG_PWM2              0x03    /* 697HF and 637HF too */
@@ -981,7 +984,7 @@ static int __init w83627hf_find(int sioaddr, unsigned short *addr)
         superio_select(W83627HF_LD_HWM);
         val = (superio_inb(WINB_BASE_REG) << 8) |
                superio_inb(WINB_BASE_REG + 1);
-        *addr = val & ~(WINB_EXTENT - 1);
+        *addr = val & WINB_ALIGNMENT;
         if (*addr == 0 && force_addr == 0) {
                 superio_exit();
                 return -ENODEV;
@@ -1000,9 +1003,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
         const char *client_name = "";
 
         if(force_addr)
-                address = force_addr & ~(WINB_EXTENT - 1);
+                address = force_addr & WINB_ALIGNMENT;
 
-        if (!request_region(address, WINB_EXTENT, w83627hf_driver.name)) {
+        if (!request_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE,
+                            w83627hf_driver.name)) {
                 err = -EBUSY;
                 goto ERROR0;
         }
@@ -1041,11 +1045,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access w83627hf_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR1;
         }
-        memset(data, 0, sizeof(struct w83627hf_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -1148,7 +1151,7 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
       ERROR2:
         kfree(data);
       ERROR1:
-        release_region(address, WINB_EXTENT);
+        release_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE);
       ERROR0:
         return err;
 }
@@ -1163,7 +1166,7 @@ static int w83627hf_detach_client(struct i2c_client *client)
         if ((err = i2c_detach_client(client)))
                 return err;
 
-        release_region(client->addr, WINB_EXTENT);
+        release_region(client->addr + WINB_REGION_OFFSET, WINB_REGION_SIZE);
         kfree(data);
 
         return 0;
@@ -1275,7 +1278,6 @@ static int w83627hf_write_value(struct i2c_client *client, u16 reg, u16 value)
         return 0;
 }
 
-/* Called when we have found a new W83781D. It should set limits, etc. */
 static void w83627hf_init_client(struct i2c_client *client)
 {
         struct w83627hf_data *data = i2c_get_clientdata(client);
@@ -1369,12 +1371,6 @@ static void w83627hf_init_client(struct i2c_client *client)
                         }
                 }
 
-                if (type == w83627hf) {
-                        /* enable PWM2 control (can't hurt since PWM reg
-                           should have been reset to 0xff) */
-                        w83627hf_write_value(client, W83627HF_REG_PWMCLK12,
-                                            0x19);
-                }
                 /* enable comparator mode for temp2 and temp3 so
                    alarm indication will work correctly */
                 i = w83627hf_read_value(client, W83781D_REG_IRQ);
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index 4c43337ca780..9265f32122fa 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -889,12 +889,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
         const char *client_name = "";
         struct w83781d_data *data = i2c_get_clientdata(new_client);
 
-        data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!(data->lm75[0])) {
                 err = -ENOMEM;
                 goto ERROR_SC_0;
         }
-        memset(data->lm75[0], 0x00, sizeof (struct i2c_client));
 
         id = i2c_adapter_id(adapter);
 
@@ -919,13 +918,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
         }
 
         if (kind != w83783s) {
-
-                data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+                data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
                 if (!(data->lm75[1])) {
                         err = -ENOMEM;
                         goto ERROR_SC_1;
                 }
-                memset(data->lm75[1], 0x0, sizeof(struct i2c_client));
 
                 if (force_subclients[0] == id &&
                     force_subclients[1] == address) {
@@ -1064,11 +1061,10 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access w83781d_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR1;
         }
-        memset(data, 0, sizeof(struct w83781d_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -1451,7 +1447,6 @@ w83781d_write_value(struct i2c_client *client, u16 reg, u16 value)
         return 0;
 }
 
-/* Called when we have found a new W83781D. It should set limits, etc. */
 static void
 w83781d_init_client(struct i2c_client *client)
 {
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
index ba0c28015f6a..4be59dbb78c4 100644
--- a/drivers/hwmon/w83792d.c
+++ b/drivers/hwmon/w83792d.c
@@ -1086,11 +1086,10 @@ w83792d_create_subclient(struct i2c_adapter *adapter,
         int err;
         struct i2c_client *sub_client;
 
-        (*sub_cli) = sub_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        (*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!(sub_client)) {
                 return -ENOMEM;
         }
-        memset(sub_client, 0x00, sizeof(struct i2c_client));
         sub_client->addr = 0x48 + addr;
         i2c_set_clientdata(sub_client, NULL);
         sub_client->adapter = adapter;
@@ -1184,11 +1183,10 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
            client structure, even though we cannot fill it completely yet.
            But it allows us to access w83792d_{read,write}_value. */
 
-        if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto ERROR0;
         }
-        memset(data, 0, sizeof(struct w83792d_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
@@ -1429,7 +1427,6 @@ w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
         return 0;
 }
 
-/* Called when we have found a new W83792D. It should set limits, etc. */
 static void
 w83792d_init_client(struct i2c_client *client)
 {
diff --git a/drivers/hwmon/w83l785ts.c b/drivers/hwmon/w83l785ts.c
index 133e34ab1d0a..f495b6378668 100644
--- a/drivers/hwmon/w83l785ts.c
+++ b/drivers/hwmon/w83l785ts.c
@@ -37,6 +37,7 @@
 #include <linux/jiffies.h>
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
 
 /* How many retries on register read error */
@@ -73,7 +74,7 @@ I2C_CLIENT_INSMOD_1(w83l785ts);
  * The W83L785TS-S uses signed 8-bit values.
  */
 
-#define TEMP_FROM_REG(val)      ((val & 0x80 ? val-0x100 : val) * 1000)
+#define TEMP_FROM_REG(val)      ((val) * 1000)
 
 /*
  * Functions declaration
@@ -111,27 +112,24 @@ struct w83l785ts_data {
         unsigned long last_updated; /* in jiffies */
 
         /* registers values */
-        u8 temp, temp_over;
+        s8 temp[2]; /* 0: input
+                       1: critical limit */
 };
 
 /*
  * Sysfs stuff
  */
 
-static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+        char *buf)
 {
+        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
         struct w83l785ts_data *data = w83l785ts_update_device(dev);
-        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
+        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 }
 
-static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
-{
-        struct w83l785ts_data *data = w83l785ts_update_device(dev);
-        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
-}
-
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
-static DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_over, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 1);
 
 /*
  * Real code
@@ -158,12 +156,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct w83l785ts_data));
-
 
         /* The common I2C client data is placed right before the
          * W83L785TS-specific data. */
@@ -228,7 +224,7 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
         init_MUTEX(&data->update_lock);
 
         /* Default values in case the first read fails (unlikely). */
-        data->temp_over = data->temp = 0;
+        data->temp[1] = data->temp[0] = 0;
 
         /* Tell the I2C layer a new client has arrived. */
         if ((err = i2c_attach_client(new_client))) 
@@ -246,8 +242,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
                 goto exit_detach;
         }
 
-        device_create_file(&new_client->dev, &dev_attr_temp1_input);
-        device_create_file(&new_client->dev, &dev_attr_temp1_max);
+        device_create_file(&new_client->dev,
+                           &sensor_dev_attr_temp1_input.dev_attr);
+        device_create_file(&new_client->dev,
+                           &sensor_dev_attr_temp1_max.dev_attr);
 
         return 0;
 
@@ -305,10 +303,10 @@ static struct w83l785ts_data *w83l785ts_update_device(struct device *dev)
 
         if (!data->valid || time_after(jiffies, data->last_updated + HZ * 2)) {
                 dev_dbg(&client->dev, "Updating w83l785ts data.\n");
-                data->temp = w83l785ts_read_value(client,
-                             W83L785TS_REG_TEMP, data->temp);
-                data->temp_over = w83l785ts_read_value(client,
-                                  W83L785TS_REG_TEMP_OVER, data->temp_over);
+                data->temp[0] = w83l785ts_read_value(client,
+                                W83L785TS_REG_TEMP, data->temp[0]);
+                data->temp[1] = w83l785ts_read_value(client,
+                                W83L785TS_REG_TEMP_OVER, data->temp[1]);
 
                 data->last_updated = jiffies;
                 data->valid = 1;
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index beb10edfe9c1..82946acab4c7 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -34,7 +34,7 @@
 #define DEB2(fmt, args...) do { if (i2c_debug>=2) printk(fmt, ## args); } while(0)
 #define DEB3(fmt, args...) do { if (i2c_debug>=3) printk(fmt, ## args); } while(0)
 
-static int i2c_debug=0;
+static int i2c_debug;
 
 #define pca_outw(adap, reg, val) adap->write_byte(adap, reg, val)
 #define pca_inw(adap, reg) adap->read_byte(adap, reg)
diff --git a/drivers/i2c/algos/i2c-algo-sibyte.c b/drivers/i2c/algos/i2c-algo-sibyte.c
index 8ed5ad12552f..938848ae162d 100644
--- a/drivers/i2c/algos/i2c-algo-sibyte.c
+++ b/drivers/i2c/algos/i2c-algo-sibyte.c
@@ -42,7 +42,7 @@
 
 /* module parameters:
  */
-static int bit_scan=0;  /* have a look at what's hanging 'round         */
+static int bit_scan;    /* have a look at what's hanging 'round         */
 
 
 static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, 
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 3badfec75b1c..4010fe92e72b 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -135,11 +135,12 @@ config I2C_I810
         help
           If you say yes to this option, support will be included for the Intel
           810/815 family of mainboard I2C interfaces.  Specifically, the 
-          following versions of the chipset is supported:
+          following versions of the chipset are supported:
             i810AA
             i810AB
             i810E
             i815
+            i845G
 
           This driver can also be built as a module.  If so, the module
           will be called i2c-i810.
diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c
index f021acd2674e..ba90f5140af6 100644
--- a/drivers/i2c/busses/i2c-ali1535.c
+++ b/drivers/i2c/busses/i2c-ali1535.c
@@ -134,7 +134,7 @@
                                         /*  -> Read  = 1                */
 #define ALI1535_SMBIO_EN        0x04    /* SMB I/O Space enable         */
 
-
+static struct pci_driver ali1535_driver;
 static unsigned short ali1535_smba;
 static DECLARE_MUTEX(i2c_ali1535_sem);
 
@@ -162,7 +162,8 @@ static int ali1535_setup(struct pci_dev *dev)
                 goto exit;
         }
 
-        if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, "ali1535-smb")) {
+        if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE,
+                            ali1535_driver.name)) {
                 dev_err(&dev->dev, "ALI1535_smb region 0x%x already in use!\n",
                         ali1535_smba);
                 goto exit;
@@ -480,7 +481,6 @@ static struct i2c_adapter ali1535_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static struct pci_device_id ali1535_ids[] = {
@@ -513,6 +513,7 @@ static void __devexit ali1535_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver ali1535_driver = {
+        .owner          = THIS_MODULE,
         .name           = "ali1535_smbus",
         .id_table       = ali1535_ids,
         .probe          = ali1535_probe,
diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c
index 86947504aea1..f1a62d892425 100644
--- a/drivers/i2c/busses/i2c-ali1563.c
+++ b/drivers/i2c/busses/i2c-ali1563.c
@@ -60,6 +60,7 @@
 
 #define HST_CNTL2_SIZEMASK      0x38
 
+static struct pci_driver ali1563_pci_driver;
 static unsigned short ali1563_smba;
 
 static int ali1563_transaction(struct i2c_adapter * a, int size)
@@ -350,7 +351,8 @@ static int __devinit ali1563_setup(struct pci_dev * dev)
                 dev_warn(&dev->dev,"ali1563_smba Uninitialized\n");
                 goto Err;
         }
-        if (!request_region(ali1563_smba,ALI1563_SMB_IOSIZE,"i2c-ali1563")) {
+        if (!request_region(ali1563_smba, ALI1563_SMB_IOSIZE,
+                            ali1563_pci_driver.name)) {
                 dev_warn(&dev->dev,"Could not allocate I/O space");
                 goto Err;
         }
@@ -406,7 +408,8 @@ static struct pci_device_id __devinitdata ali1563_id_table[] = {
 MODULE_DEVICE_TABLE (pci, ali1563_id_table);
 
 static struct pci_driver ali1563_pci_driver = {
-        .name           = "ali1563_i2c",
+        .owner          = THIS_MODULE,
+        .name           = "ali1563_smbus",
         .id_table       = ali1563_id_table,
         .probe          = ali1563_probe,
         .remove         = __devexit_p(ali1563_remove),
diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index b3f50bff39a0..400b08ed4299 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -125,12 +125,13 @@
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static u16 force_addr = 0;
+static u16 force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr,
                  "Initialize the base address of the i2c controller");
 
-static unsigned short ali15x3_smba = 0;
+static struct pci_driver ali15x3_driver;
+static unsigned short ali15x3_smba;
 
 static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
 {
@@ -166,7 +167,8 @@ static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
         if(force_addr)
                 ali15x3_smba = force_addr & ~(ALI15X3_SMB_IOSIZE - 1);
 
-        if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, "ali15x3-smb")) {
+        if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE,
+                            ali15x3_driver.name)) {
                 dev_err(&ALI15X3_dev->dev,
                         "ALI15X3_smb region 0x%x already in use!\n",
                         ali15x3_smba);
@@ -470,7 +472,6 @@ static struct i2c_adapter ali15x3_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static struct pci_device_id ali15x3_ids[] = {
@@ -503,6 +504,7 @@ static void __devexit ali15x3_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver ali15x3_driver = {
+        .owner          = THIS_MODULE,
         .name           = "ali15x3_smbus",
         .id_table       = ali15x3_ids,
         .probe          = ali15x3_probe,
diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c
index 4e553e8c5cba..f51ab652300a 100644
--- a/drivers/i2c/busses/i2c-amd756-s4882.c
+++ b/drivers/i2c/busses/i2c-amd756-s4882.c
@@ -169,12 +169,12 @@ static int __init amd756_s4882_init(void)
         init_MUTEX(&amd756_lock);
 
         /* Define the 5 virtual adapters and algorithms structures */
-        if (!(s4882_adapter = kmalloc(5 * sizeof(struct i2c_adapter),
+        if (!(s4882_adapter = kzalloc(5 * sizeof(struct i2c_adapter),
                                       GFP_KERNEL))) {
                 error = -ENOMEM;
                 goto ERROR1;
         }
-        if (!(s4882_algo = kmalloc(5 * sizeof(struct i2c_algorithm),
+        if (!(s4882_algo = kzalloc(5 * sizeof(struct i2c_algorithm),
                                    GFP_KERNEL))) {
                 error = -ENOMEM;
                 goto ERROR2;
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index 6ad0603384b8..de035d137c3f 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -85,8 +85,8 @@
 #define AMD756_PROCESS_CALL     0x04
 #define AMD756_BLOCK_DATA       0x05
 
-
-static unsigned short amd756_ioport = 0;
+static struct pci_driver amd756_driver;
+static unsigned short amd756_ioport;
 
 /* 
   SMBUS event = I/O 28-29 bit 11
@@ -303,7 +303,6 @@ struct i2c_adapter amd756_smbus = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 enum chiptype { AMD756, AMD766, AMD768, NFORCE, AMD8111 };
@@ -365,7 +364,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
                 amd756_ioport += SMB_ADDR_OFFSET;
         }
 
-        if (!request_region(amd756_ioport, SMB_IOSIZE, "amd756-smbus")) {
+        if (!request_region(amd756_ioport, SMB_IOSIZE, amd756_driver.name)) {
                 dev_err(&pdev->dev, "SMB region 0x%x already in use!\n",
                         amd756_ioport);
                 return -ENODEV;
@@ -402,6 +401,7 @@ static void __devexit amd756_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver amd756_driver = {
+        .owner          = THIS_MODULE,
         .name           = "amd756_smbus",
         .id_table       = amd756_ids,
         .probe          = amd756_probe,
diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c
index 45ea24ba14d5..f3b79a68dbec 100644
--- a/drivers/i2c/busses/i2c-amd8111.c
+++ b/drivers/i2c/busses/i2c-amd8111.c
@@ -30,6 +30,8 @@ struct amd_smbus {
         int size;
 };
 
+static struct pci_driver amd8111_driver;
+
 /*
  * AMD PCI control registers definitions.
  */
@@ -242,7 +244,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl
                         break;
 
                 case I2C_SMBUS_BLOCK_PROC_CALL:
-                        protocol |= pec;
                         len = min_t(u8, data->block[0], 31);
                         amd_ec_write(smbus, AMD_SMB_CMD, command);
                         amd_ec_write(smbus, AMD_SMB_BCNT, len);
@@ -252,13 +253,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl
                         read_write = I2C_SMBUS_READ;
                         break;
 
-                case I2C_SMBUS_WORD_DATA_PEC:
-                case I2C_SMBUS_BLOCK_DATA_PEC:
-                case I2C_SMBUS_PROC_CALL_PEC:
-                case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-                        dev_warn(&adap->dev, "Unexpected software PEC transaction %d\n.", size);
-                        return -1;
-
                 default:
                         dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
                         return -1;
@@ -343,16 +337,15 @@ static int __devinit amd8111_probe(struct pci_dev *dev, const struct pci_device_
         if (~pci_resource_flags(dev, 0) & IORESOURCE_IO)
                 return -ENODEV;
 
-        smbus = kmalloc(sizeof(struct amd_smbus), GFP_KERNEL);
+        smbus = kzalloc(sizeof(struct amd_smbus), GFP_KERNEL);
         if (!smbus)
                 return -ENOMEM;
-        memset(smbus, 0, sizeof(struct amd_smbus));
 
         smbus->dev = dev;
         smbus->base = pci_resource_start(dev, 0);
         smbus->size = pci_resource_len(dev, 0);
 
-        if (!request_region(smbus->base, smbus->size, "amd8111 SMBus 2.0"))
+        if (!request_region(smbus->base, smbus->size, amd8111_driver.name))
                 goto out_kfree;
 
         smbus->adapter.owner = THIS_MODULE;
@@ -391,6 +384,7 @@ static void __devexit amd8111_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver amd8111_driver = {
+        .owner          = THIS_MODULE,
         .name           = "amd8111_smbus2",
         .id_table       = amd8111_ids,
         .probe          = amd8111_probe,
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c
index 6930b660e508..59f8308c2356 100644
--- a/drivers/i2c/busses/i2c-elektor.c
+++ b/drivers/i2c/busses/i2c-elektor.c
@@ -22,7 +22,7 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of 
+/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of
    for Alpha Processor Inc. UP-2000(+) boards */
 
 #include <linux/kernel.h>
@@ -46,12 +46,14 @@
 #define DEFAULT_BASE 0x330
 
 static int base;
+static u8 __iomem *base_iomem;
+
 static int irq;
 static int clock  = 0x1c;
 static int own    = 0x55;
 static int mmapped;
 
-/* vdovikin: removed static struct i2c_pcf_isa gpi; code - 
+/* vdovikin: removed static struct i2c_pcf_isa gpi; code -
   this module in real supports only one device, due to missing arguments
   in some functions, called from the algo-pcf module. Sometimes it's
   need to be rewriten - but for now just remove this for simpler reading */
@@ -60,40 +62,33 @@ static wait_queue_head_t pcf_wait;
 static int pcf_pending;
 static spinlock_t lock;
 
+static struct i2c_adapter pcf_isa_ops;
+
 /* ----- local functions ---------------------------------------------- */
 
 static void pcf_isa_setbyte(void *data, int ctl, int val)
 {
-        int address = ctl ? (base + 1) : base;
+        u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem;
 
         /* enable irq if any specified for serial operation */
         if (ctl && irq && (val & I2C_PCF_ESO)) {
                 val |= I2C_PCF_ENI;
         }
 
-        pr_debug("i2c-elektor: Write 0x%X 0x%02X\n", address, val & 255);
-
-        switch (mmapped) {
-        case 0: /* regular I/O */
-                outb(val, address);
-                break;
-        case 2: /* double mapped I/O needed for UP2000 board,
-                   I don't know why this... */
-                writeb(val, (void *)address);
-                /* fall */
-        case 1: /* memory mapped I/O */
-                writeb(val, (void *)address);
-                break;
-        }
+        pr_debug("%s: Write %p 0x%02X\n", pcf_isa_ops.name, address, val);
+        iowrite8(val, address);
+#ifdef __alpha__
+        /* API UP2000 needs some hardware fudging to make the write stick */
+        iowrite8(val, address);
+#endif
 }
 
 static int pcf_isa_getbyte(void *data, int ctl)
 {
-        int address = ctl ? (base + 1) : base;
-        int val = mmapped ? readb((void *)address) : inb(address);
-
-        pr_debug("i2c-elektor: Read 0x%X 0x%02X\n", address, val);
+        u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem;
+        int val = ioread8(address);
 
+        pr_debug("%s: Read %p 0x%02X\n", pcf_isa_ops.name, address, val);
         return (val);
 }
 
@@ -149,16 +144,40 @@ static int pcf_isa_init(void)
 {
         spin_lock_init(&lock);
         if (!mmapped) {
-                if (!request_region(base, 2, "i2c (isa bus adapter)")) {
-                        printk(KERN_ERR
-                               "i2c-elektor: requested I/O region (0x%X:2) "
-                               "is in use.\n", base);
+                if (!request_region(base, 2, pcf_isa_ops.name)) {
+                        printk(KERN_ERR "%s: requested I/O region (%#x:2) is "
+                               "in use\n", pcf_isa_ops.name, base);
+                        return -ENODEV;
+                }
+                base_iomem = ioport_map(base, 2);
+                if (!base_iomem) {
+                        printk(KERN_ERR "%s: remap of I/O region %#x failed\n",
+                               pcf_isa_ops.name, base);
+                        release_region(base, 2);
+                        return -ENODEV;
+                }
+        } else {
+                if (!request_mem_region(base, 2, pcf_isa_ops.name)) {
+                        printk(KERN_ERR "%s: requested memory region (%#x:2) "
+                               "is in use\n", pcf_isa_ops.name, base);
+                        return -ENODEV;
+                }
+                base_iomem = ioremap(base, 2);
+                if (base_iomem == NULL) {
+                        printk(KERN_ERR "%s: remap of memory region %#x "
+                               "failed\n", pcf_isa_ops.name, base);
+                        release_mem_region(base, 2);
                         return -ENODEV;
                 }
         }
+        pr_debug("%s: registers %#x remapped to %p\n", pcf_isa_ops.name, base,
+                 base_iomem);
+
         if (irq > 0) {
-                if (request_irq(irq, pcf_isa_handler, 0, "PCF8584", NULL) < 0) {
-                        printk(KERN_ERR "i2c-elektor: Request irq%d failed\n", irq);
+                if (request_irq(irq, pcf_isa_handler, 0, pcf_isa_ops.name,
+                                NULL) < 0) {
+                        printk(KERN_ERR "%s: Request irq%d failed\n",
+                               pcf_isa_ops.name, irq);
                         irq = 0;
                 } else
                         enable_irq(irq);
@@ -186,47 +205,49 @@ static struct i2c_adapter pcf_isa_ops = {
         .class          = I2C_CLASS_HWMON,
         .id             = I2C_HW_P_ELEK,
         .algo_data      = &pcf_isa_data,
-        .name           = "PCF8584 ISA adapter",
+        .name           = "i2c-elektor",
 };
 
-static int __init i2c_pcfisa_init(void) 
+static int __init i2c_pcfisa_init(void)
 {
 #ifdef __alpha__
-        /* check to see we have memory mapped PCF8584 connected to the 
+        /* check to see we have memory mapped PCF8584 connected to the
         Cypress cy82c693 PCI-ISA bridge as on UP2000 board */
         if (base == 0) {
                 struct pci_dev *cy693_dev;
-                
-                cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ, 
+
+                cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ,
                                            PCI_DEVICE_ID_CONTAQ_82C693, NULL);
                 if (cy693_dev) {
-                        char config;
+                        unsigned char config;
                         /* yeap, we've found cypress, let's check config */
                         if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
-                                
-                                pr_debug("i2c-elektor: found cy82c693, config register 0x47 = 0x%02x.\n", config);
+
+                                pr_debug("%s: found cy82c693, config "
+                                         "register 0x47 = 0x%02x\n",
+                                         pcf_isa_ops.name, config);
 
                                 /* UP2000 board has this register set to 0xe1,
-                                   but the most significant bit as seems can be 
+                                   but the most significant bit as seems can be
                                    reset during the proper initialisation
-                                   sequence if guys from API decides to do that
-                                   (so, we can even enable Tsunami Pchip
-                                   window for the upper 1 Gb) */
+                                   sequence if guys from API decides to do that
+                                   (so, we can even enable Tsunami Pchip
+                                   window for the upper 1 Gb) */
 
                                 /* so just check for ROMCS at 0xe0000,
-                                   ROMCS enabled for writes
+                                   ROMCS enabled for writes
                                    and external XD Bus buffer in use. */
                                 if ((config & 0x7f) == 0x61) {
                                         /* seems to be UP2000 like board */
                                         base = 0xe0000;
-                                        /* I don't know why we need to
-                                           write twice */
-                                        mmapped = 2;
-                                        /* UP2000 drives ISA with
+                                        mmapped = 1;
+                                        /* UP2000 drives ISA with
                                            8.25 MHz (PCI/4) clock
                                            (this can be read from cypress) */
                                         clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
-                                        printk(KERN_INFO "i2c-elektor: found API UP2000 like board, will probe PCF8584 later.\n");
+                                        pr_info("%s: found API UP2000 like "
+                                                "board, will probe PCF8584 "
+                                                "later\n", pcf_isa_ops.name);
                                 }
                         }
                         pci_dev_put(cy693_dev);
@@ -236,12 +257,11 @@ static int __init i2c_pcfisa_init(void)
 
         /* sanity checks for mmapped I/O */
         if (mmapped && base < 0xc8000) {
-                printk(KERN_ERR "i2c-elektor: incorrect base address (0x%0X) specified for mmapped I/O.\n", base);
+                printk(KERN_ERR "%s: incorrect base address (%#x) specified "
+                       "for mmapped I/O\n", pcf_isa_ops.name, base);
                 return -ENODEV;
         }
 
-        printk(KERN_INFO "i2c-elektor: i2c pcf8584-isa adapter driver\n");
-
         if (base == 0) {
                 base = DEFAULT_BASE;
         }
@@ -251,8 +271,8 @@ static int __init i2c_pcfisa_init(void)
                 return -ENODEV;
         if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
                 goto fail;
-        
-        printk(KERN_ERR "i2c-elektor: found device at %#x.\n", base);
+
+        dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base);
 
         return 0;
 
@@ -262,8 +282,13 @@ static int __init i2c_pcfisa_init(void)
                 free_irq(irq, NULL);
         }
 
-        if (!mmapped)
-                release_region(base , 2);
+        if (!mmapped) {
+                ioport_unmap(base_iomem);
+                release_region(base, 2);
+        } else {
+                iounmap(base_iomem);
+                release_mem_region(base, 2);
+        }
         return -ENODEV;
 }
 
@@ -276,8 +301,13 @@ static void i2c_pcfisa_exit(void)
                 free_irq(irq, NULL);
         }
 
-        if (!mmapped)
-                release_region(base , 2);
+        if (!mmapped) {
+                ioport_unmap(base_iomem);
+                release_region(base, 2);
+        } else {
+                iounmap(base_iomem);
+                release_mem_region(base, 2);
+        }
 }
 
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");
diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c
index e0cb3b0f92fa..1b5354e24bf5 100644
--- a/drivers/i2c/busses/i2c-hydra.c
+++ b/drivers/i2c/busses/i2c-hydra.c
@@ -155,6 +155,7 @@ static void __devexit hydra_remove(struct pci_dev *dev)
 
 
 static struct pci_driver hydra_driver = {
+        .owner          = THIS_MODULE,
         .name           = "hydra_smbus",
         .id_table       = hydra_ids,
         .probe          = hydra_probe,
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 709beab76609..4f63195069da 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -52,10 +52,6 @@
 #include <linux/i2c.h>
 #include <asm/io.h>
 
-#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC
-#define HAVE_PEC
-#endif
-
 /* I801 SMBus address offsets */
 #define SMBHSTSTS       (0 + i801_smba)
 #define SMBHSTCNT       (2 + i801_smba)
@@ -106,10 +102,11 @@ MODULE_PARM_DESC(force_addr,
                  "EXTREMELY DANGEROUS!");
 
 static int i801_transaction(void);
-static int i801_block_transaction(union i2c_smbus_data *data,
-                                  char read_write, int command);
+static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
+                                  int command, int hwpec);
 
 static unsigned short i801_smba;
+static struct pci_driver i801_driver;
 static struct pci_dev *I801_dev;
 static int isich4;
 
@@ -143,7 +140,7 @@ static int i801_setup(struct pci_dev *dev)
                 }
         }
 
-        if (!request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus")) {
+        if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) {
                 dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n",
                         i801_smba);
                 error_return = -EBUSY;
@@ -252,7 +249,7 @@ static int i801_transaction(void)
 
 /* All-inclusive block transaction function */
 static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
-                                  int command)
+                                  int command, int hwpec)
 {
         int i, len;
         int smbcmd;
@@ -391,8 +388,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
                         goto END;
         }
 
-#ifdef HAVE_PEC
-        if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) {
+        if (hwpec) {
                 /* wait for INTR bit as advised by Intel */
                 timeout = 0;
                 do {
@@ -406,7 +402,6 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
                 }
                 outb_p(temp, SMBHSTSTS); 
         }
-#endif
         result = 0;
 END:
         if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
@@ -421,14 +416,13 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
                        unsigned short flags, char read_write, u8 command,
                        int size, union i2c_smbus_data * data)
 {
-        int hwpec = 0;
+        int hwpec;
         int block = 0;
         int ret, xact = 0;
 
-#ifdef HAVE_PEC
-        if(isich4)
-                hwpec = (flags & I2C_CLIENT_PEC) != 0;
-#endif
+        hwpec = isich4 && (flags & I2C_CLIENT_PEC)
+                && size != I2C_SMBUS_QUICK
+                && size != I2C_SMBUS_I2C_BLOCK_DATA;
 
         switch (size) {
         case I2C_SMBUS_QUICK:
@@ -463,11 +457,6 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
                 break;
         case I2C_SMBUS_BLOCK_DATA:
         case I2C_SMBUS_I2C_BLOCK_DATA:
-#ifdef HAVE_PEC
-        case I2C_SMBUS_BLOCK_DATA_PEC:
-                if(hwpec && size == I2C_SMBUS_BLOCK_DATA)
-                        size = I2C_SMBUS_BLOCK_DATA_PEC;
-#endif
                 outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
                        SMBHSTADD);
                 outb_p(command, SMBHSTCMD);
@@ -479,27 +468,18 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
                 return -1;
         }
 
-#ifdef HAVE_PEC
-        if(isich4 && hwpec) {
-                if(size != I2C_SMBUS_QUICK &&
-                   size != I2C_SMBUS_I2C_BLOCK_DATA)
-                        outb_p(1, SMBAUXCTL);   /* enable HW PEC */
-        }
-#endif
+        if (hwpec)
+                outb_p(1, SMBAUXCTL);   /* enable hardware PEC */
+
         if(block)
-                ret = i801_block_transaction(data, read_write, size);
+                ret = i801_block_transaction(data, read_write, size, hwpec);
         else {
                 outb_p(xact | ENABLE_INT9, SMBHSTCNT);
                 ret = i801_transaction();
         }
 
-#ifdef HAVE_PEC
-        if(isich4 && hwpec) {
-                if(size != I2C_SMBUS_QUICK &&
-                   size != I2C_SMBUS_I2C_BLOCK_DATA)
-                        outb_p(0, SMBAUXCTL);
-        }
-#endif
+        if (hwpec)
+                outb_p(0, SMBAUXCTL);   /* disable hardware PEC */
 
         if(block)
                 return ret;
@@ -526,12 +506,7 @@ static u32 i801_func(struct i2c_adapter *adapter)
         return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
             I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
             I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
-#ifdef HAVE_PEC
-             | (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC |
-                         I2C_FUNC_SMBUS_HWPEC_CALC
-                       : 0)
-#endif
-            ;
+             | (isich4 ? I2C_FUNC_SMBUS_HWPEC_CALC : 0);
 }
 
 static struct i2c_algorithm smbus_algorithm = {
@@ -543,7 +518,6 @@ static struct i2c_adapter i801_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static struct pci_device_id i801_ids[] = {
@@ -586,6 +560,7 @@ static void __devexit i801_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver i801_driver = {
+        .owner          = THIS_MODULE,
         .name           = "i801_smbus",
         .id_table       = i801_ids,
         .probe          = i801_probe,
diff --git a/drivers/i2c/busses/i2c-i810.c b/drivers/i2c/busses/i2c-i810.c
index 0ff7016e0629..52bc30593bd7 100644
--- a/drivers/i2c/busses/i2c-i810.c
+++ b/drivers/i2c/busses/i2c-i810.c
@@ -32,6 +32,7 @@
    i810AB               7123           
    i810E                7125           
    i815                 1132           
+   i845G                2562
 */
 
 #include <linux/kernel.h>
@@ -232,6 +233,7 @@ static void __devexit i810_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver i810_driver = {
+        .owner          = THIS_MODULE,
         .name           = "i810_smbus",
         .id_table       = i810_ids,
         .probe          = i810_probe,
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index a3ed9590f028..1a587253d716 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -672,13 +672,12 @@ static int __devinit iic_probe(struct ocp_device *ocp){
                 printk(KERN_WARNING"ibm-iic%d: missing additional data!\n",
                         ocp->def->index);
 
-        if (!(dev = kmalloc(sizeof(*dev), GFP_KERNEL))){
+        if (!(dev = kzalloc(sizeof(*dev), GFP_KERNEL))) {
                 printk(KERN_CRIT "ibm-iic%d: failed to allocate device data\n",
                         ocp->def->index);
                 return -ENOMEM;
         }
 
-        memset(dev, 0, sizeof(*dev));
         dev->idx = ocp->def->index;
         ocp_set_drvdata(ocp, dev);
         
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c
index 7bd9102db701..9888fae1f37a 100644
--- a/drivers/i2c/busses/i2c-iop3xx.c
+++ b/drivers/i2c/busses/i2c-iop3xx.c
@@ -43,7 +43,7 @@
 #include "i2c-iop3xx.h"
 
 /* global unit counter */
-static int i2c_id = 0;
+static int i2c_id;
 
 static inline unsigned char 
 iic_cook_addr(struct i2c_msg *msg) 
@@ -440,19 +440,17 @@ iop3xx_i2c_probe(struct device *dev)
         struct i2c_adapter *new_adapter;
         struct i2c_algo_iop3xx_data *adapter_data;
 
-        new_adapter = kmalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
+        new_adapter = kzalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
         if (!new_adapter) {
                 ret = -ENOMEM;
                 goto out;
         }
-        memset((void*)new_adapter, 0, sizeof(*new_adapter));
 
-        adapter_data = kmalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL);
+        adapter_data = kzalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL);
         if (!adapter_data) {
                 ret = -ENOMEM;
                 goto free_adapter;
         }
-        memset((void*)adapter_data, 0, sizeof(*adapter_data));
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
@@ -525,6 +523,7 @@ out:
 
 
 static struct device_driver iop3xx_i2c_driver = {
+        .owner          = THIS_MODULE,
         .name           = "IOP3xx-I2C",
         .bus            = &platform_bus_type,
         .probe          = iop3xx_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
index bdc6806dafae..4fdc02411609 100644
--- a/drivers/i2c/busses/i2c-isa.c
+++ b/drivers/i2c/busses/i2c-isa.c
@@ -92,6 +92,7 @@ int i2c_isa_add_driver(struct i2c_driver *driver)
 
         /* Add the driver to the list of i2c drivers in the driver core */
         driver->driver.name = driver->name;
+        driver->driver.owner = driver->owner;
         driver->driver.bus = &i2c_bus_type;
         driver->driver.probe = i2c_isa_device_probe;
         driver->driver.remove = i2c_isa_device_remove;
diff --git a/drivers/i2c/busses/i2c-ixp2000.c b/drivers/i2c/busses/i2c-ixp2000.c
index 1956af382cd8..42016ee6ef13 100644
--- a/drivers/i2c/busses/i2c-ixp2000.c
+++ b/drivers/i2c/busses/i2c-ixp2000.c
@@ -36,6 +36,8 @@
 #include <asm/hardware.h>       /* Pick up IXP2000-specific bits */
 #include <asm/arch/gpio.h>
 
+static struct device_driver ixp2000_i2c_driver;
+
 static inline int ixp2000_scl_pin(void *data)
 {
         return ((struct ixp2000_i2c_pins*)data)->scl_pin;
@@ -104,11 +106,10 @@ static int ixp2000_i2c_probe(struct device *dev)
         struct platform_device *plat_dev = to_platform_device(dev);
         struct ixp2000_i2c_pins *gpio = plat_dev->dev.platform_data;
         struct ixp2000_i2c_data *drv_data = 
-                kmalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);
+                kzalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);
 
         if (!drv_data)
                 return -ENOMEM;
-        memzero(drv_data, sizeof(*drv_data));
         drv_data->gpio_pins = gpio;
 
         drv_data->algo_data.data = gpio;
@@ -121,6 +122,8 @@ static int ixp2000_i2c_probe(struct device *dev)
         drv_data->algo_data.timeout = 100;
 
         drv_data->adapter.id = I2C_HW_B_IXP2000,
+        strlcpy(drv_data->adapter.name, ixp2000_i2c_driver.name,
+                I2C_NAME_SIZE);
         drv_data->adapter.algo_data = &drv_data->algo_data,
 
         drv_data->adapter.dev.parent = &plat_dev->dev;
@@ -142,6 +145,7 @@ static int ixp2000_i2c_probe(struct device *dev)
 }
 
 static struct device_driver ixp2000_i2c_driver = {
+        .owner          = THIS_MODULE,
         .name           = "IXP2000-I2C",
         .bus            = &platform_bus_type,
         .probe          = ixp2000_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c
index f6f5ca31fdba..69303ab65e04 100644
--- a/drivers/i2c/busses/i2c-ixp4xx.c
+++ b/drivers/i2c/busses/i2c-ixp4xx.c
@@ -35,6 +35,8 @@
 
 #include <asm/hardware.h>       /* Pick up IXP4xx-specific bits */
 
+static struct device_driver ixp4xx_i2c_driver;
+
 static inline int ixp4xx_scl_pin(void *data)
 {
         return ((struct ixp4xx_i2c_pins*)data)->scl_pin;
@@ -105,12 +107,11 @@ static int ixp4xx_i2c_probe(struct device *dev)
         struct platform_device *plat_dev = to_platform_device(dev);
         struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data;
         struct ixp4xx_i2c_data *drv_data = 
-                kmalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
+                kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
 
         if(!drv_data)
                 return -ENOMEM;
 
-        memzero(drv_data, sizeof(struct ixp4xx_i2c_data));
         drv_data->gpio_pins = gpio;
 
         /*
@@ -129,6 +130,8 @@ static int ixp4xx_i2c_probe(struct device *dev)
         drv_data->algo_data.timeout = 100;
 
         drv_data->adapter.id = I2C_HW_B_IXP4XX;
+        strlcpy(drv_data->adapter.name, ixp4xx_i2c_driver.name,
+                I2C_NAME_SIZE);
         drv_data->adapter.algo_data = &drv_data->algo_data;
 
         drv_data->adapter.dev.parent = &plat_dev->dev;
@@ -151,6 +154,7 @@ static int ixp4xx_i2c_probe(struct device *dev)
 }
 
 static struct device_driver ixp4xx_i2c_driver = {
+        .owner          = THIS_MODULE,
         .name           = "IXP4XX-I2C",
         .bus            = &platform_bus_type,
         .probe          = ixp4xx_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-keywest.c b/drivers/i2c/busses/i2c-keywest.c
index eff5896ce865..d61f748278fc 100644
--- a/drivers/i2c/busses/i2c-keywest.c
+++ b/drivers/i2c/busses/i2c-keywest.c
@@ -535,13 +535,12 @@ create_iface(struct device_node *np, struct device *dev)
 
         tsize = sizeof(struct keywest_iface) +
                 (sizeof(struct keywest_chan) + 4) * nchan;
-        iface = (struct keywest_iface *) kmalloc(tsize, GFP_KERNEL);
+        iface = kzalloc(tsize, GFP_KERNEL);
         if (iface == NULL) {
                 printk(KERN_ERR "i2c-keywest: can't allocate inteface !\n");
                 pmac_low_i2c_unlock(np);
                 return -ENOMEM;
         }
-        memset(iface, 0, tsize);
         spin_lock_init(&iface->lock);
         init_completion(&iface->complete);
         iface->node = of_node_get(np);
@@ -716,6 +715,7 @@ static struct of_device_id i2c_keywest_match[] =
 
 static struct macio_driver i2c_keywest_macio_driver = 
 {
+        .owner          = THIS_MODULE,
         .name           = "i2c-keywest",
         .match_table    = i2c_keywest_match,
         .probe          = create_iface_macio,
@@ -724,6 +724,7 @@ static struct macio_driver i2c_keywest_macio_driver =
 
 static struct of_platform_driver i2c_keywest_of_platform_driver = 
 {
+        .owner          = THIS_MODULE,
         .name           = "i2c-keywest",
         .match_table    = i2c_keywest_match,
         .probe          = create_iface_of_platform,
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index f065583ddcf1..8491633005b8 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -296,10 +296,9 @@ static int fsl_i2c_probe(struct device *device)
 
         pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data;
 
-        if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) {
+        if (!(i2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) {
                 return -ENOMEM;
         }
-        memset(i2c, 0, sizeof(*i2c));
 
         i2c->irq = platform_get_irq(pdev, 0);
         i2c->flags = pdata->device_flags;
@@ -361,6 +360,7 @@ static int fsl_i2c_remove(struct device *device)
 
 /* Structure for a device driver */
 static struct device_driver fsl_i2c_driver = {
+        .owner = THIS_MODULE,
         .name = "fsl-i2c",
         .bus = &platform_bus_type,
         .probe = fsl_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 99abca45fece..d0d2a6f1386e 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -500,13 +500,10 @@ mv64xxx_i2c_probe(struct device *dev)
         if ((pd->id != 0) || !pdata)
                 return -ENODEV;
 
-        drv_data = kmalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL);
-
+        drv_data = kzalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL);
         if (!drv_data)
                 return -ENOMEM;
 
-        memset(drv_data, 0, sizeof(struct mv64xxx_i2c_data));
-
         if (mv64xxx_i2c_map_regs(pd, drv_data)) {
                 rc = -ENODEV;
                 goto exit_kfree;
@@ -570,6 +567,7 @@ mv64xxx_i2c_remove(struct device *dev)
 }
 
 static struct device_driver mv64xxx_i2c_driver = {
+        .owner  = THIS_MODULE,
         .name   = MV64XXX_I2C_CTLR_NAME,
         .bus    = &platform_bus_type,
         .probe  = mv64xxx_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index fe9c0f42a2b7..fd26036e68a3 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -97,6 +97,7 @@ struct nforce2_smbus {
 #define NVIDIA_SMB_PRTCL_I2C_BLOCK_DATA         0x4a
 #define NVIDIA_SMB_PRTCL_PEC                    0x80
 
+static struct pci_driver nforce2_driver;
 
 static s32 nforce2_access(struct i2c_adapter *adap, u16 addr,
                        unsigned short flags, char read_write,
@@ -113,7 +114,6 @@ static struct i2c_adapter nforce2_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 /* Return -1 on error. See smbus.h for more information */
@@ -188,13 +188,6 @@ static s32 nforce2_access(struct i2c_adapter * adap, u16 addr,
                         dev_err(&adap->dev, "I2C_SMBUS_BLOCK_PROC_CALL not supported!\n");
                         return -1;
 
-                case I2C_SMBUS_WORD_DATA_PEC:
-                case I2C_SMBUS_BLOCK_DATA_PEC:
-                case I2C_SMBUS_PROC_CALL_PEC:
-                case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-                        dev_err(&adap->dev, "Unexpected software PEC transaction %d\n.", size);
-                        return -1;
-
                 default:
                         dev_err(&adap->dev, "Unsupported transaction %d\n", size);
                         return -1;
@@ -285,7 +278,7 @@ static int __devinit nforce2_probe_smb (struct pci_dev *dev, int reg,
         smbus->base = iobase & 0xfffc;
         smbus->size = 8;
 
-        if (!request_region(smbus->base, smbus->size, "nForce2 SMBus")) {
+        if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) {
                 dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n",
                         smbus->base, smbus->base+smbus->size-1, name);
                 return -1;
@@ -313,10 +306,8 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_
         int res1, res2;
 
         /* we support 2 SMBus adapters */
-        if (!(smbuses = (void *)kmalloc(2*sizeof(struct nforce2_smbus),
-                                        GFP_KERNEL)))
+        if (!(smbuses = kzalloc(2*sizeof(struct nforce2_smbus), GFP_KERNEL)))
                 return -ENOMEM;
-        memset (smbuses, 0, 2*sizeof(struct nforce2_smbus));
         pci_set_drvdata(dev, smbuses);
 
         /* SMBus adapter 1 */
@@ -356,6 +347,7 @@ static void __devexit nforce2_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver nforce2_driver = {
+        .owner          = THIS_MODULE,
         .name           = "nForce2_smbus",
         .id_table       = nforce2_ids,
         .probe          = nforce2_probe,
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index 71a2502fe069..2854d858fc9b 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -155,12 +155,11 @@ static void i2c_parport_attach (struct parport *port)
 {
         struct i2c_par *adapter;
         
-        adapter = kmalloc(sizeof(struct i2c_par), GFP_KERNEL);
+        adapter = kzalloc(sizeof(struct i2c_par), GFP_KERNEL);
         if (adapter == NULL) {
-                printk(KERN_ERR "i2c-parport: Failed to kmalloc\n");
+                printk(KERN_ERR "i2c-parport: Failed to kzalloc\n");
                 return;
         }
-        memset(adapter, 0x00, sizeof(struct i2c_par));
 
         pr_debug("i2c-parport: attaching to %s\n", port->name);
         adapter->pdev = parport_register_device(port, "i2c-parport",
@@ -232,7 +231,7 @@ static void i2c_parport_detach (struct parport *port)
         }
 }
 
-static struct parport_driver i2c_driver = {
+static struct parport_driver i2c_parport_driver = {
         .name   = "i2c-parport",
         .attach = i2c_parport_attach,
         .detach = i2c_parport_detach,
@@ -250,12 +249,12 @@ static int __init i2c_parport_init(void)
                 type = 0;
         }
         
-        return parport_register_driver(&i2c_driver);
+        return parport_register_driver(&i2c_parport_driver);
 }
 
 static void __exit i2c_parport_exit(void)
 {
-        parport_unregister_driver(&i2c_driver);
+        parport_unregister_driver(&i2c_parport_driver);
 }
 
 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c
index 6d48a4da7bed..7d63eec423fe 100644
--- a/drivers/i2c/busses/i2c-piix4.c
+++ b/drivers/i2c/busses/i2c-piix4.c
@@ -90,13 +90,13 @@ struct sd {
 
 /* If force is set to anything different from 0, we forcibly enable the
    PIIX4. DANGEROUS! */
-static int force = 0;
+static int force;
 module_param (force, int, 0);
 MODULE_PARM_DESC(force, "Forcibly enable the PIIX4. DANGEROUS!");
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the PIIX4 at the given address. VERY DANGEROUS! */
-static int force_addr = 0;
+static int force_addr;
 module_param (force_addr, int, 0);
 MODULE_PARM_DESC(force_addr,
                  "Forcibly enable the PIIX4 at the given address. "
@@ -104,14 +104,15 @@ MODULE_PARM_DESC(force_addr,
 
 /* If fix_hstcfg is set to anything different from 0, we reset one of the
    registers to be a valid value. */
-static int fix_hstcfg = 0;
+static int fix_hstcfg;
 module_param (fix_hstcfg, int, 0);
 MODULE_PARM_DESC(fix_hstcfg,
                 "Fix config register. Needed on some boards (Force CPCI735).");
 
 static int piix4_transaction(void);
 
-static unsigned short piix4_smba = 0;
+static unsigned short piix4_smba;
+static struct pci_driver piix4_driver;
 static struct i2c_adapter piix4_adapter;
 
 static struct dmi_system_id __devinitdata piix4_dmi_table[] = {
@@ -157,7 +158,7 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev,
                 }
         }
 
-        if (!request_region(piix4_smba, SMBIOSIZE, "piix4-smbus")) {
+        if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) {
                 dev_err(&PIIX4_dev->dev, "SMB region 0x%x already in use!\n",
                         piix4_smba);
                 return -ENODEV;
@@ -407,7 +408,6 @@ static struct i2c_adapter piix4_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static struct pci_device_id piix4_ids[] = {
@@ -462,6 +462,7 @@ static void __devexit piix4_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver piix4_driver = {
+        .owner          = THIS_MODULE,
         .name           = "piix4_smbus",
         .id_table       = piix4_ids,
         .probe          = piix4_probe,
diff --git a/drivers/i2c/busses/i2c-pmac-smu.c b/drivers/i2c/busses/i2c-pmac-smu.c
index 8a9f5648a23d..bfefe7f7a53d 100644
--- a/drivers/i2c/busses/i2c-pmac-smu.c
+++ b/drivers/i2c/busses/i2c-pmac-smu.c
@@ -211,12 +211,11 @@ static int create_iface(struct device_node *np, struct device *dev)
         }
         busid = *reg;
 
-        iface = kmalloc(sizeof(struct smu_iface), GFP_KERNEL);
+        iface = kzalloc(sizeof(struct smu_iface), GFP_KERNEL);
         if (iface == NULL) {
                 printk(KERN_ERR "i2c-pmac-smu: can't allocate inteface !\n");
                 return -ENOMEM;
         }
-        memset(iface, 0, sizeof(struct smu_iface));
         init_completion(&iface->complete);
         iface->busid = busid;
 
diff --git a/drivers/i2c/busses/i2c-prosavage.c b/drivers/i2c/busses/i2c-prosavage.c
index 83fd16d61ce5..42cb1d8ca659 100644
--- a/drivers/i2c/busses/i2c-prosavage.c
+++ b/drivers/i2c/busses/i2c-prosavage.c
@@ -83,11 +83,6 @@ struct s_i2c_chip {
 /*
  * i2c configuration
  */
-#ifndef I2C_HW_B_S3VIA
-#define I2C_HW_B_S3VIA  0x18    /* S3VIA ProSavage adapter              */
-#endif
-
-/* delays */
 #define CYCLE_DELAY     10
 #define TIMEOUT         (HZ / 2)
 
@@ -241,14 +236,12 @@ static int __devinit prosavage_probe(struct pci_dev *dev, const struct pci_devic
         struct s_i2c_chip *chip;
         struct s_i2c_bus  *bus;
 
-        pci_set_drvdata(dev, kmalloc(sizeof(struct s_i2c_chip), GFP_KERNEL)); 
+        pci_set_drvdata(dev, kzalloc(sizeof(struct s_i2c_chip), GFP_KERNEL));
         chip = (struct s_i2c_chip *)pci_get_drvdata(dev);
         if (chip == NULL) {
                 return -ENOMEM;
         }
 
-        memset(chip, 0, sizeof(struct s_i2c_chip));
-
         base = dev->resource[0].start & PCI_BASE_ADDRESS_MEM_MASK;
         len  = dev->resource[0].end - base + 1;
         chip->mmio = ioremap_nocache(base, len);
@@ -308,6 +301,7 @@ static struct pci_device_id prosavage_pci_tbl[] = {
 MODULE_DEVICE_TABLE (pci, prosavage_pci_tbl);
 
 static struct pci_driver prosavage_driver = {
+        .owner          =       THIS_MODULE,
         .name           =       "prosavage_smbus",
         .id_table       =       prosavage_pci_tbl,
         .probe          =       prosavage_probe,
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 69fa282df2d5..6ced28e90070 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -896,6 +896,7 @@ static int s3c24xx_i2c_resume(struct device *dev)
 /* device driver for platform bus bits */
 
 static struct device_driver s3c2410_i2c_driver = {
+        .owner          = THIS_MODULE,
         .name           = "s3c2410-i2c",
         .bus            = &platform_bus_type,
         .probe          = s3c24xx_i2c_probe,
@@ -904,6 +905,7 @@ static struct device_driver s3c2410_i2c_driver = {
 };
 
 static struct device_driver s3c2440_i2c_driver = {
+        .owner          = THIS_MODULE,
         .name           = "s3c2440-i2c",
         .bus            = &platform_bus_type,
         .probe          = s3c24xx_i2c_probe,
diff --git a/drivers/i2c/busses/i2c-savage4.c b/drivers/i2c/busses/i2c-savage4.c
index 0c8518298e4d..aebe87ba4033 100644
--- a/drivers/i2c/busses/i2c-savage4.c
+++ b/drivers/i2c/busses/i2c-savage4.c
@@ -179,6 +179,7 @@ static void __devexit savage4_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver savage4_driver = {
+        .owner          = THIS_MODULE,
         .name           = "savage4_smbus",
         .id_table       = savage4_ids,
         .probe          = savage4_probe,
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
index 080318d6f54b..3ad27c3ba15b 100644
--- a/drivers/i2c/busses/i2c-sis5595.c
+++ b/drivers/i2c/busses/i2c-sis5595.c
@@ -123,11 +123,12 @@ static int blacklist[] = {
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static u16 force_addr = 0;
+static u16 force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr, "Initialize the base address of the i2c controller");
 
-static unsigned short sis5595_base = 0;
+static struct pci_driver sis5595_driver;
+static unsigned short sis5595_base;
 
 static u8 sis5595_read(u8 reg)
 {
@@ -172,7 +173,8 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev)
 
         /* NB: We grab just the two SMBus registers here, but this may still
          * interfere with ACPI :-(  */
-        if (!request_region(sis5595_base + SMB_INDEX, 2, "sis5595-smbus")) {
+        if (!request_region(sis5595_base + SMB_INDEX, 2,
+                            sis5595_driver.name)) {
                 dev_err(&SIS5595_dev->dev, "SMBus registers 0x%04x-0x%04x already in use!\n",
                         sis5595_base + SMB_INDEX, sis5595_base + SMB_INDEX + 1);
                 return -ENODEV;
@@ -364,7 +366,6 @@ static struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis5595_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
-        .name           = "unset",
         .algo           = &smbus_algorithm,
 };
 
@@ -397,6 +398,7 @@ static void __devexit sis5595_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver sis5595_driver = {
+        .owner          = THIS_MODULE,
         .name           = "sis5595_smbus",
         .id_table       = sis5595_ids,
         .probe          = sis5595_probe,
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index 86f0f448fa0b..7f49e5fd3ff0 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -92,6 +92,8 @@
 #define SIS630_PCALL            0x04
 #define SIS630_BLOCK_DATA       0x05
 
+static struct pci_driver sis630_driver;
+
 /* insmod parameters */
 static int high_clock;
 static int force;
@@ -101,7 +103,7 @@ module_param(force, bool, 0);
 MODULE_PARM_DESC(force, "Forcibly enable the SIS630. DANGEROUS!");
 
 /* acpi base address */
-static unsigned short acpi_base = 0;
+static unsigned short acpi_base;
 
 /* supported chips */
 static int supported[] = {
@@ -432,7 +434,8 @@ static int sis630_setup(struct pci_dev *sis630_dev)
         dev_dbg(&sis630_dev->dev, "ACPI base at 0x%04x\n", acpi_base);
 
         /* Everything is happy, let's grab the memory and set things up. */
-        if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION, "sis630-smbus")) {
+        if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION,
+                            sis630_driver.name)) {
                 dev_err(&sis630_dev->dev, "SMBus registers 0x%04x-0x%04x already "
                         "in use!\n", acpi_base + SMB_STS, acpi_base + SMB_SAA);
                 goto exit;
@@ -455,7 +458,6 @@ static struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis630_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
-        .name           = "unset",
         .algo           = &smbus_algorithm,
 };
 
@@ -494,6 +496,7 @@ static void __devexit sis630_remove(struct pci_dev *dev)
 
 
 static struct pci_driver sis630_driver = {
+        .owner          = THIS_MODULE,
         .name           = "sis630_smbus",
         .id_table       = sis630_ids,
         .probe          = sis630_probe,
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c
index ead2ff3cf60e..6a134c091324 100644
--- a/drivers/i2c/busses/i2c-sis96x.c
+++ b/drivers/i2c/busses/i2c-sis96x.c
@@ -82,8 +82,9 @@
 #define SIS96x_PROC_CALL  0x04
 #define SIS96x_BLOCK_DATA 0x05
 
+static struct pci_driver sis96x_driver;
 static struct i2c_adapter sis96x_adapter;
-static u16 sis96x_smbus_base = 0;
+static u16 sis96x_smbus_base;
 
 static inline u8 sis96x_read(u8 reg)
 {
@@ -257,7 +258,6 @@ static struct i2c_adapter sis96x_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static struct pci_device_id sis96x_ids[] = {
@@ -294,7 +294,8 @@ static int __devinit sis96x_probe(struct pci_dev *dev,
                         sis96x_smbus_base);
 
         /* Everything is happy, let's grab the memory and set things up. */
-        if (!request_region(sis96x_smbus_base, SMB_IOSIZE, "sis96x-smbus")) {
+        if (!request_region(sis96x_smbus_base, SMB_IOSIZE,
+                            sis96x_driver.name)) {
                 dev_err(&dev->dev, "SMBus registers 0x%04x-0x%04x "
                         "already in use!\n", sis96x_smbus_base,
                         sis96x_smbus_base + SMB_IOSIZE - 1);
@@ -328,6 +329,7 @@ static void __devexit sis96x_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver sis96x_driver = {
+        .owner          = THIS_MODULE,
         .name           = "sis96x_smbus",
         .id_table       = sis96x_ids,
         .probe          = sis96x_probe,
diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c
index 040b8abeabba..544a38e64394 100644
--- a/drivers/i2c/busses/i2c-via.c
+++ b/drivers/i2c/busses/i2c-via.c
@@ -43,9 +43,9 @@
 
 /* io-region reservation */
 #define IOSPACE         0x06
-#define IOTEXT          "via-i2c"
 
-static u16 pm_io_base = 0;
+static struct pci_driver vt586b_driver;
+static u16 pm_io_base;
 
 /*
    It does not appear from the datasheet that the GPIO pins are
@@ -130,7 +130,7 @@ static int __devinit vt586b_probe(struct pci_dev *dev, const struct pci_device_i
         pci_read_config_word(dev, base, &pm_io_base);
         pm_io_base &= (0xff << 8);
 
-        if (!request_region(I2C_DIR, IOSPACE, IOTEXT)) {
+        if (!request_region(I2C_DIR, IOSPACE, vt586b_driver.name)) {
                 dev_err(&dev->dev, "IO 0x%x-0x%x already in use\n", I2C_DIR, I2C_DIR + IOSPACE);
                 return -ENODEV;
         }
@@ -159,6 +159,7 @@ static void __devexit vt586b_remove(struct pci_dev *dev)
 
 
 static struct pci_driver vt586b_driver = {
+        .owner          = THIS_MODULE,
         .name           = "vt586b_smbus",
         .id_table       = vt586b_ids,
         .probe          = vt586b_probe,
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 99d209e0485a..c9366b504833 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -1,9 +1,10 @@
 /*
     i2c-viapro.c - Part of lm_sensors, Linux kernel modules for hardware
               monitoring
-    Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>, 
+    Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>,
     Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>,
     Mark D. Studebaker <mdsxyz123@yahoo.com>
+    Copyright (C) 2005  Jean Delvare <khali@linux-fr.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -21,15 +22,19 @@
 */
 
 /*
-   Supports Via devices:
-        82C596A/B (0x3050)
-        82C596B (0x3051)
-        82C686A/B
-        8231
-        8233
-        8233A (0x3147 and 0x3177)
-        8235
-        8237
+   Supports the following VIA south bridges:
+
+   Chip name          PCI ID  REV     I2C block
+   VT82C596A          0x3050             no
+   VT82C596B          0x3051             no
+   VT82C686A          0x3057  0x30       no
+   VT82C686B          0x3057  0x40       yes
+   VT8231             0x8235             no?
+   VT8233             0x3074             yes
+   VT8233A            0x3147             yes?
+   VT8235             0x3177             yes
+   VT8237R            0x3227             yes
+
    Note: we assume there can only be one device, with one SMBus interface.
 */
 
@@ -38,7 +43,6 @@
 #include <linux/pci.h>
 #include <linux/kernel.h>
 #include <linux/stddef.h>
-#include <linux/sched.h>
 #include <linux/ioport.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
@@ -46,48 +50,37 @@
 
 static struct pci_dev *vt596_pdev;
 
-#define SMBBA1           0x90
-#define SMBBA2           0x80
-#define SMBBA3           0xD0
+#define SMBBA1          0x90
+#define SMBBA2          0x80
+#define SMBBA3          0xD0
 
 /* SMBus address offsets */
 static unsigned short vt596_smba;
 #define SMBHSTSTS       (vt596_smba + 0)
-#define SMBHSLVSTS      (vt596_smba + 1)
 #define SMBHSTCNT       (vt596_smba + 2)
 #define SMBHSTCMD       (vt596_smba + 3)
 #define SMBHSTADD       (vt596_smba + 4)
 #define SMBHSTDAT0      (vt596_smba + 5)
 #define SMBHSTDAT1      (vt596_smba + 6)
 #define SMBBLKDAT       (vt596_smba + 7)
-#define SMBSLVCNT       (vt596_smba + 8)
-#define SMBSHDWCMD      (vt596_smba + 9)
-#define SMBSLVEVT       (vt596_smba + 0xA)
-#define SMBSLVDAT       (vt596_smba + 0xC)
 
 /* PCI Address Constants */
 
 /* SMBus data in configuration space can be found in two places,
-   We try to select the better one*/
-
-static unsigned short smb_cf_hstcfg = 0xD2;
+   We try to select the better one */
 
-#define SMBHSTCFG   (smb_cf_hstcfg)
-#define SMBSLVC     (smb_cf_hstcfg + 1)
-#define SMBSHDW1    (smb_cf_hstcfg + 2)
-#define SMBSHDW2    (smb_cf_hstcfg + 3)
-#define SMBREV      (smb_cf_hstcfg + 4)
+static unsigned short SMBHSTCFG = 0xD2;
 
 /* Other settings */
 #define MAX_TIMEOUT     500
-#define ENABLE_INT9     0
 
 /* VT82C596 constants */
-#define VT596_QUICK      0x00
-#define VT596_BYTE       0x04
-#define VT596_BYTE_DATA  0x08
-#define VT596_WORD_DATA  0x0C
-#define VT596_BLOCK_DATA 0x14
+#define VT596_QUICK             0x00
+#define VT596_BYTE              0x04
+#define VT596_BYTE_DATA         0x08
+#define VT596_WORD_DATA         0x0C
+#define VT596_BLOCK_DATA        0x14
+#define VT596_I2C_BLOCK_DATA    0x34
 
 
 /* If force is set to anything different from 0, we forcibly enable the
@@ -105,40 +98,65 @@ MODULE_PARM_DESC(force_addr,
                  "EXTREMELY DANGEROUS!");
 
 
+static struct pci_driver vt596_driver;
 static struct i2c_adapter vt596_adapter;
 
-/* Another internally used function */
-static int vt596_transaction(void)
+#define FEATURE_I2CBLOCK        (1<<0)
+static unsigned int vt596_features;
+
+#ifdef DEBUG
+static void vt596_dump_regs(const char *msg, u8 size)
+{
+        dev_dbg(&vt596_adapter.dev, "%s: STS=%02x CNT=%02x CMD=%02x ADD=%02x "
+                "DAT=%02x,%02x\n", msg, inb_p(SMBHSTSTS), inb_p(SMBHSTCNT),
+                inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
+                inb_p(SMBHSTDAT1));
+
+        if (size == VT596_BLOCK_DATA
+         || size == VT596_I2C_BLOCK_DATA) {
+                int i;
+
+                dev_dbg(&vt596_adapter.dev, "BLK=");
+                for (i = 0; i < I2C_SMBUS_BLOCK_MAX / 2; i++)
+                        printk("%02x,", inb_p(SMBBLKDAT));
+                printk("\n");
+                dev_dbg(&vt596_adapter.dev, "    ");
+                for (; i < I2C_SMBUS_BLOCK_MAX - 1; i++)
+                        printk("%02x,", inb_p(SMBBLKDAT));
+                printk("%02x\n", inb_p(SMBBLKDAT));
+        }
+}
+#else
+static inline void vt596_dump_regs(const char *msg, u8 size) { }
+#endif
+
+/* Return -1 on error, 0 on success */
+static int vt596_transaction(u8 size)
 {
         int temp;
         int result = 0;
         int timeout = 0;
 
-        dev_dbg(&vt596_adapter.dev, "Transaction (pre): CNT=%02x, CMD=%02x, "
-                "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), 
-                inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), 
-                inb_p(SMBHSTDAT1));
+        vt596_dump_regs("Transaction (pre)", size);
 
         /* Make sure the SMBus host is ready to start transmitting */
         if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
                 dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). "
-                                "Resetting...\n", temp);
-                
+                        "Resetting... ", temp);
+
                 outb_p(temp, SMBHSTSTS);
                 if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
-                        dev_dbg(&vt596_adapter.dev, "Failed! (0x%02x)\n", temp);
-                        
+                        printk("Failed! (0x%02x)\n", temp);
                         return -1;
                 } else {
-                        dev_dbg(&vt596_adapter.dev, "Successfull!\n");
+                        printk("Successful!\n");
                 }
         }
 
-        /* start the transaction by setting bit 6 */
-        outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT);
+        /* Start the transaction by setting bit 6 */
+        outb_p(0x40 | (size & 0x3C), SMBHSTCNT);
 
-        /* We will always wait for a fraction of a second! 
-           I don't know if VIA needs this, Intel did  */
+        /* We will always wait for a fraction of a second */
         do {
                 msleep(1);
                 temp = inb_p(SMBHSTSTS);
@@ -147,77 +165,61 @@ static int vt596_transaction(void)
         /* If the SMBus is still busy, we give up */
         if (timeout >= MAX_TIMEOUT) {
                 result = -1;
-                dev_dbg(&vt596_adapter.dev, "SMBus Timeout!\n");
+                dev_err(&vt596_adapter.dev, "SMBus timeout!\n");
         }
 
         if (temp & 0x10) {
                 result = -1;
-                dev_dbg(&vt596_adapter.dev, "Error: Failed bus transaction\n");
+                dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n",
+                        inb_p(SMBHSTCNT) & 0x3C);
         }
 
         if (temp & 0x08) {
                 result = -1;
-                dev_info(&vt596_adapter.dev, "Bus collision! SMBus may be "
-                        "locked until next hard\nreset. (sorry!)\n");
-                /* Clock stops and slave is stuck in mid-transmission */
+                dev_err(&vt596_adapter.dev, "SMBus collision!\n");
         }
 
         if (temp & 0x04) {
                 result = -1;
-                dev_dbg(&vt596_adapter.dev, "Error: no response!\n");
+                /* Quick commands are used to probe for chips, so
+                   errors are expected, and we don't want to frighten the
+                   user. */
+                if ((inb_p(SMBHSTCNT) & 0x3C) != VT596_QUICK)
+                        dev_err(&vt596_adapter.dev, "Transaction error!\n");
         }
 
-        if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
+        /* Resetting status register */
+        if (temp & 0x1F)
                 outb_p(temp, SMBHSTSTS);
-                if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
-                        dev_warn(&vt596_adapter.dev, "Failed reset at end "
-                                 "of transaction (%02x)\n", temp);
-                }
-        }
 
-        dev_dbg(&vt596_adapter.dev, "Transaction (post): CNT=%02x, CMD=%02x, "
-                "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT),
-                inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), 
-                inb_p(SMBHSTDAT1));
-        
+        vt596_dump_regs("Transaction (post)", size);
+
         return result;
 }
 
-/* Return -1 on error. */
+/* Return -1 on error, 0 on success */
 static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
-                unsigned short flags,  char read_write, u8 command,
-                int size,  union i2c_smbus_data *data)
+                unsigned short flags, char read_write, u8 command,
+                int size, union i2c_smbus_data *data)
 {
-        int i, len;
+        int i;
 
         switch (size) {
-        case I2C_SMBUS_PROC_CALL:
-                dev_info(&vt596_adapter.dev,
-                         "I2C_SMBUS_PROC_CALL not supported!\n");
-                return -1;
         case I2C_SMBUS_QUICK:
-                outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-                       SMBHSTADD);
                 size = VT596_QUICK;
                 break;
         case I2C_SMBUS_BYTE:
-                outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-                       SMBHSTADD);
                 if (read_write == I2C_SMBUS_WRITE)
                         outb_p(command, SMBHSTCMD);
                 size = VT596_BYTE;
                 break;
         case I2C_SMBUS_BYTE_DATA:
-                outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-                       SMBHSTADD);
                 outb_p(command, SMBHSTCMD);
                 if (read_write == I2C_SMBUS_WRITE)
                         outb_p(data->byte, SMBHSTDAT0);
                 size = VT596_BYTE_DATA;
                 break;
         case I2C_SMBUS_WORD_DATA:
-                outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-                       SMBHSTADD);
                 outb_p(command, SMBHSTCMD);
                 if (read_write == I2C_SMBUS_WRITE) {
                         outb_p(data->word & 0xff, SMBHSTDAT0);
@@ -225,28 +227,33 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
                 }
                 size = VT596_WORD_DATA;
                 break;
+        case I2C_SMBUS_I2C_BLOCK_DATA:
+                if (!(vt596_features & FEATURE_I2CBLOCK))
+                        goto exit_unsupported;
+                if (read_write == I2C_SMBUS_READ)
+                        outb_p(I2C_SMBUS_BLOCK_MAX, SMBHSTDAT0);
+                /* Fall through */
         case I2C_SMBUS_BLOCK_DATA:
-                outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-                       SMBHSTADD);
                 outb_p(command, SMBHSTCMD);
                 if (read_write == I2C_SMBUS_WRITE) {
-                        len = data->block[0];
-                        if (len < 0)
-                                len = 0;
+                        u8 len = data->block[0];
                         if (len > I2C_SMBUS_BLOCK_MAX)
                                 len = I2C_SMBUS_BLOCK_MAX;
                         outb_p(len, SMBHSTDAT0);
-                        i = inb_p(SMBHSTCNT);   /* Reset SMBBLKDAT */
+                        inb_p(SMBHSTCNT);       /* Reset SMBBLKDAT */
                         for (i = 1; i <= len; i++)
                                 outb_p(data->block[i], SMBBLKDAT);
                 }
-                size = VT596_BLOCK_DATA;
+                size = (size == I2C_SMBUS_I2C_BLOCK_DATA) ?
+                       VT596_I2C_BLOCK_DATA : VT596_BLOCK_DATA;
                 break;
+        default:
+                goto exit_unsupported;
         }
 
-        outb_p((size & 0x1C) + (ENABLE_INT9 & 1), SMBHSTCNT);
+        outb_p(((addr & 0x7f) << 1) | read_write, SMBHSTADD);
 
-        if (vt596_transaction()) /* Error in transaction */
+        if (vt596_transaction(size)) /* Error in transaction */
                 return -1;
 
         if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK))
@@ -254,35 +261,39 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 
         switch (size) {
         case VT596_BYTE:
-                /* Where is the result put? I assume here it is in
-                 * SMBHSTDAT0 but it might just as well be in the
-                 * SMBHSTCMD. No clue in the docs 
-                 */
-                data->byte = inb_p(SMBHSTDAT0);
-                break;
         case VT596_BYTE_DATA:
                 data->byte = inb_p(SMBHSTDAT0);
                 break;
         case VT596_WORD_DATA:
                 data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8);
                 break;
+        case VT596_I2C_BLOCK_DATA:
         case VT596_BLOCK_DATA:
                 data->block[0] = inb_p(SMBHSTDAT0);
                 if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
                         data->block[0] = I2C_SMBUS_BLOCK_MAX;
-                i = inb_p(SMBHSTCNT);   /* Reset SMBBLKDAT */
+                inb_p(SMBHSTCNT);       /* Reset SMBBLKDAT */
                 for (i = 1; i <= data->block[0]; i++)
                         data->block[i] = inb_p(SMBBLKDAT);
                 break;
         }
         return 0;
+
+exit_unsupported:
+        dev_warn(&vt596_adapter.dev, "Unsupported command invoked! (0x%02x)\n",
+                 size);
+        return -1;
 }
 
 static u32 vt596_func(struct i2c_adapter *adapter)
 {
-        return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
+        u32 func = I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
             I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
             I2C_FUNC_SMBUS_BLOCK_DATA;
+
+        if (vt596_features & FEATURE_I2CBLOCK)
+                func |= I2C_FUNC_SMBUS_I2C_BLOCK;
+        return func;
 }
 
 static struct i2c_algorithm smbus_algorithm = {
@@ -294,7 +305,6 @@ static struct i2c_adapter vt596_adapter = {
         .owner          = THIS_MODULE,
         .class          = I2C_CLASS_HWMON,
         .algo           = &smbus_algorithm,
-        .name           = "unset",
 };
 
 static int __devinit vt596_probe(struct pci_dev *pdev,
@@ -302,7 +312,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 {
         unsigned char temp;
         int error = -ENODEV;
-        
+
         /* Determine the address of the SMBus areas */
         if (force_addr) {
                 vt596_smba = force_addr & 0xfff0;
@@ -311,12 +321,12 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
         }
 
         if ((pci_read_config_word(pdev, id->driver_data, &vt596_smba)) ||
-            !(vt596_smba & 0x1)) {
+            !(vt596_smba & 0x0001)) {
                 /* try 2nd address and config reg. for 596 */
                 if (id->device == PCI_DEVICE_ID_VIA_82C596_3 &&
                     !pci_read_config_word(pdev, SMBBA2, &vt596_smba) &&
-                    (vt596_smba & 0x1)) {
-                        smb_cf_hstcfg = 0x84;
+                    (vt596_smba & 0x0001)) {
+                        SMBHSTCFG = 0x84;
                 } else {
                         /* no matches at all */
                         dev_err(&pdev->dev, "Cannot configure "
@@ -333,10 +343,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
                 return -ENODEV;
         }
 
- found:
-        if (!request_region(vt596_smba, 8, "viapro-smbus")) {
+found:
+        if (!request_region(vt596_smba, 8, vt596_driver.name)) {
                 dev_err(&pdev->dev, "SMBus region 0x%x already in use!\n",
-                        vt596_smba);
+                        vt596_smba);
                 return -ENODEV;
         }
 
@@ -348,16 +358,16 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
                 pci_write_config_word(pdev, id->driver_data, vt596_smba);
                 pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
                 dev_warn(&pdev->dev, "WARNING: SMBus interface set to new "
-                     "address 0x%04x!\n", vt596_smba);
-        } else if ((temp & 1) == 0) {
+                         "address 0x%04x!\n", vt596_smba);
+        } else if (!(temp & 0x01)) {
                 if (force) {
-                        /* NOTE: This assumes I/O space and other allocations 
-                         * WERE done by the Bios!  Don't complain if your 
-                         * hardware does weird things after enabling this. 
-                         * :') Check for Bios updates before resorting to 
+                        /* NOTE: This assumes I/O space and other allocations
+                         * WERE done by the Bios!  Don't complain if your
+                         * hardware does weird things after enabling this.
+                         * :') Check for Bios updates before resorting to
                          * this.
                          */
-                        pci_write_config_byte(pdev, SMBHSTCFG, temp | 1);
+                        pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
                         dev_info(&pdev->dev, "Enabling SMBus device\n");
                 } else {
                         dev_err(&pdev->dev, "SMBUS: Error: Host SMBus "
@@ -367,22 +377,28 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
                 }
         }
 
-        if ((temp & 0x0E) == 8)
-                dev_dbg(&pdev->dev, "using Interrupt 9 for SMBus.\n");
-        else if ((temp & 0x0E) == 0)
-                dev_dbg(&pdev->dev, "using Interrupt SMI# for SMBus.\n");
-        else
-                dev_dbg(&pdev->dev, "Illegal Interrupt configuration "
-                        "(or code out of date)!\n");
-
-        pci_read_config_byte(pdev, SMBREV, &temp);
-        dev_dbg(&pdev->dev, "SMBREV = 0x%X\n", temp);
         dev_dbg(&pdev->dev, "VT596_smba = 0x%X\n", vt596_smba);
 
+        switch (pdev->device) {
+        case PCI_DEVICE_ID_VIA_8237:
+        case PCI_DEVICE_ID_VIA_8235:
+        case PCI_DEVICE_ID_VIA_8233A:
+        case PCI_DEVICE_ID_VIA_8233_0:
+                vt596_features |= FEATURE_I2CBLOCK;
+                break;
+        case PCI_DEVICE_ID_VIA_82C686_4:
+                /* The VT82C686B (rev 0x40) does support I2C block
+                   transactions, but the VT82C686A (rev 0x30) doesn't */
+                if (!pci_read_config_byte(pdev, PCI_REVISION_ID, &temp)
+                 && temp >= 0x40)
+                        vt596_features |= FEATURE_I2CBLOCK;
+                break;
+        }
+
         vt596_adapter.dev.parent = &pdev->dev;
         snprintf(vt596_adapter.name, I2C_NAME_SIZE,
-                        "SMBus Via Pro adapter at %04x", vt596_smba);
-        
+                 "SMBus Via Pro adapter at %04x", vt596_smba);
+
         vt596_pdev = pci_dev_get(pdev);
         if (i2c_add_adapter(&vt596_adapter)) {
                 pci_dev_put(vt596_pdev);
@@ -395,7 +411,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
          */
         return -ENODEV;
 
- release_region:
+release_region:
         release_region(vt596_smba, 8);
         return error;
 }
@@ -420,9 +436,10 @@ static struct pci_device_id vt596_ids[] = {
         { 0, }
 };
 
-MODULE_DEVICE_TABLE (pci, vt596_ids);
+MODULE_DEVICE_TABLE(pci, vt596_ids);
 
 static struct pci_driver vt596_driver = {
+        .owner          = THIS_MODULE,
         .name           = "vt596_smbus",
         .id_table       = vt596_ids,
         .probe          = vt596_probe,
diff --git a/drivers/i2c/busses/i2c-voodoo3.c b/drivers/i2c/busses/i2c-voodoo3.c
index b675773b0cc1..650c3ebde84c 100644
--- a/drivers/i2c/busses/i2c-voodoo3.c
+++ b/drivers/i2c/busses/i2c-voodoo3.c
@@ -225,6 +225,7 @@ static void __devexit voodoo3_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver voodoo3_driver = {
+        .owner          = THIS_MODULE,
         .name           = "voodoo3_smbus",
         .id_table       = voodoo3_ids,
         .probe          = voodoo3_probe,
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index a1d580e05361..d3478e084522 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -442,14 +442,13 @@ static int  __init scx200_acb_create(int base, int index)
         int rc = 0;
         char description[64];
 
-        iface = kmalloc(sizeof(*iface), GFP_KERNEL);
+        iface = kzalloc(sizeof(*iface), GFP_KERNEL);
         if (!iface) {
                 printk(KERN_ERR NAME ": can't allocate memory\n");
                 rc = -ENOMEM;
                 goto errout;
         }
 
-        memset(iface, 0, sizeof(*iface));
         adapter = &iface->adapter;
         i2c_set_adapdata(adapter, iface);
         snprintf(adapter->name, I2C_NAME_SIZE, "SCx200 ACB%d", index);
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index 6bd44a44cd28..f9fae28f5612 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -126,4 +126,13 @@ config SENSORS_MAX6875
           This driver can also be built as a module.  If so, the module
           will be called max6875.
 
+config RTC_X1205_I2C
+        tristate "Xicor X1205 RTC chip"
+        depends on I2C && EXPERIMENTAL
+        help
+          If you say yes here you get support for the Xicor X1205 RTC chip.
+
+          This driver can also be built as a module. If so, the module
+          will be called x1205.
+
 endmenu
diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
index a876dd42b860..46178b57b1f1 100644
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o
 obj-$(CONFIG_SENSORS_RTC8564)   += rtc8564.o
 obj-$(CONFIG_ISP1301_OMAP)      += isp1301_omap.o
 obj-$(CONFIG_TPS65010)          += tps65010.o
+obj-$(CONFIG_RTC_X1205_I2C)     += x1205.o
 
 ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/chips/ds1337.c b/drivers/i2c/chips/ds1337.c
index 9d3175c03395..01b037007410 100644
--- a/drivers/i2c/chips/ds1337.c
+++ b/drivers/i2c/chips/ds1337.c
@@ -243,11 +243,10 @@ static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind)
                                      I2C_FUNC_I2C))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct ds1337_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct ds1337_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct ds1337_data));
         INIT_LIST_HEAD(&data->list);
 
         /* The common I2C client data is placed right before the
diff --git a/drivers/i2c/chips/ds1374.c b/drivers/i2c/chips/ds1374.c
index 0936327a946d..da488b735abf 100644
--- a/drivers/i2c/chips/ds1374.c
+++ b/drivers/i2c/chips/ds1374.c
@@ -167,7 +167,8 @@ static void ds1374_set_tlet(ulong arg)
 
 static ulong new_time;
 
-DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet, (ulong) & new_time);
+static DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet,
+                                (ulong) & new_time);
 
 int ds1374_set_rtc_time(ulong nowtime)
 {
@@ -193,13 +194,11 @@ static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
         struct i2c_client *client;
         int rc;
 
-        client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!client)
                 return -ENOMEM;
 
-        memset(client, 0, sizeof(struct i2c_client));
         strncpy(client->name, DS1374_DRV_NAME, I2C_NAME_SIZE);
-        client->flags = I2C_DF_NOTIFY;
         client->addr = addr;
         client->adapter = adap;
         client->driver = &ds1374_driver;
diff --git a/drivers/i2c/chips/eeprom.c b/drivers/i2c/chips/eeprom.c
index d58403a47908..4baf573fa04f 100644
--- a/drivers/i2c/chips/eeprom.c
+++ b/drivers/i2c/chips/eeprom.c
@@ -88,8 +88,8 @@ static void eeprom_update_client(struct i2c_client *client, u8 slice)
                 dev_dbg(&client->dev, "Starting eeprom update, slice %u\n", slice);
 
                 if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
-                        for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_I2C_BLOCK_MAX)
-                                if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_I2C_BLOCK_MAX)
+                        for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_BLOCK_MAX)
+                                if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_BLOCK_MAX)
                                         goto exit;
                 } else {
                         if (i2c_smbus_write_byte(client, slice << 5)) {
@@ -155,7 +155,7 @@ static int eeprom_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
+static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         struct i2c_client *new_client;
         struct eeprom_data *data;
@@ -171,11 +171,10 @@ int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
                                             | I2C_FUNC_SMBUS_BYTE))
                 goto exit;
 
-        if (!(data = kmalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct eeprom_data));
 
         new_client = &data->client;
         memset(data->data, 0xff, EEPROM_SIZE);
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index 8ee56d4b3891..eaa4742e04fa 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -888,6 +888,7 @@ static int otg_remove(struct device *dev)
 }
 
 struct device_driver omap_otg_driver = {
+        .owner          = THIS_MODULE,
         .name           = "omap_otg",
         .bus            = &platform_bus_type,
         .probe          = otg_probe,
diff --git a/drivers/i2c/chips/m41t00.c b/drivers/i2c/chips/m41t00.c
index 3f14528a52a9..3df309ae44a6 100644
--- a/drivers/i2c/chips/m41t00.c
+++ b/drivers/i2c/chips/m41t00.c
@@ -174,13 +174,11 @@ m41t00_probe(struct i2c_adapter *adap, int addr, int kind)
         struct i2c_client *client;
         int rc;
 
-        client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+        client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
         if (!client)
                 return -ENOMEM;
 
-        memset(client, 0, sizeof(struct i2c_client));
         strncpy(client->name, M41T00_DRV_NAME, I2C_NAME_SIZE);
-        client->flags = I2C_DF_NOTIFY;
         client->addr = addr;
         client->adapter = adap;
         client->driver = &m41t00_driver;
diff --git a/drivers/i2c/chips/max6875.c b/drivers/i2c/chips/max6875.c
index 9e1aeb69abf9..b376a006883c 100644
--- a/drivers/i2c/chips/max6875.c
+++ b/drivers/i2c/chips/max6875.c
@@ -179,16 +179,14 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind)
         if (address & 1)
                 return 0;
 
-        if (!(data = kmalloc(sizeof(struct max6875_data), GFP_KERNEL)))
+        if (!(data = kzalloc(sizeof(struct max6875_data), GFP_KERNEL)))
                 return -ENOMEM;
-        memset(data, 0, sizeof(struct max6875_data));
 
         /* A fake client is created on the odd address */
-        if (!(fake_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
+        if (!(fake_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit_kfree1;
         }
-        memset(fake_client, 0, sizeof(struct i2c_client));
 
         /* Init real i2c_client */
         real_client = &data->client;
diff --git a/drivers/i2c/chips/pca9539.c b/drivers/i2c/chips/pca9539.c
index 225577fdda4d..59a930346229 100644
--- a/drivers/i2c/chips/pca9539.c
+++ b/drivers/i2c/chips/pca9539.c
@@ -122,11 +122,10 @@ static int pca9539_detect(struct i2c_adapter *adapter, int address, int kind)
 
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet. */
-        if (!(data = kmalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct pca9539_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/i2c/chips/pcf8574.c b/drivers/i2c/chips/pcf8574.c
index 6525743ff9fd..c323c2de236c 100644
--- a/drivers/i2c/chips/pcf8574.c
+++ b/drivers/i2c/chips/pcf8574.c
@@ -115,7 +115,7 @@ static int pcf8574_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
+static int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         struct i2c_client *new_client;
         struct pcf8574_data *data;
@@ -127,11 +127,10 @@ int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
 
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet. */
-        if (!(data = kmalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct pcf8574_data));
 
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/i2c/chips/pcf8591.c b/drivers/i2c/chips/pcf8591.c
index 80f1df9a4500..ce420a67560b 100644
--- a/drivers/i2c/chips/pcf8591.c
+++ b/drivers/i2c/chips/pcf8591.c
@@ -166,7 +166,7 @@ static int pcf8591_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
+static int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
 {
         struct i2c_client *new_client;
         struct pcf8591_data *data;
@@ -178,11 +178,10 @@ int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
 
         /* OK. For now, we presume we have a valid client. We now create the
            client structure, even though we cannot fill it completely yet. */
-        if (!(data = kmalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) {
+        if (!(data = kzalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto exit;
         }
-        memset(data, 0, sizeof(struct pcf8591_data));
         
         new_client = &data->client;
         i2c_set_clientdata(new_client, data);
diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c
index 0b5385c892b1..916cdc1af23c 100644
--- a/drivers/i2c/chips/rtc8564.c
+++ b/drivers/i2c/chips/rtc8564.c
@@ -148,17 +148,16 @@ static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind)
                 {addr, I2C_M_RD, 2, data}
         };
 
-        d = kmalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
+        d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
         if (!d) {
                 ret = -ENOMEM;
                 goto done;
         }
-        memset(d, 0, sizeof(struct rtc8564_data));
         new_client = &d->client;
 
         strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE);
         i2c_set_clientdata(new_client, d);
-        new_client->flags = I2C_CLIENT_ALLOW_USE | I2C_DF_NOTIFY;
+        new_client->flags = I2C_CLIENT_ALLOW_USE;
         new_client->addr = addr;
         new_client->adapter = adap;
         new_client->driver = &rtc8564_driver;
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index 280e9638c0f8..280dd7a45db6 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -500,11 +500,10 @@ tps65010_probe(struct i2c_adapter *bus, int address, int kind)
                 return 0;
         }
 
-        tps = kmalloc(sizeof *tps, GFP_KERNEL);
+        tps = kzalloc(sizeof *tps, GFP_KERNEL);
         if (!tps)
                 return 0;
 
-        memset(tps, 0, sizeof *tps);
         init_MUTEX(&tps->lock);
         INIT_WORK(&tps->work, tps65010_work, tps);
         tps->irq = -1;
diff --git a/drivers/i2c/chips/x1205.c b/drivers/i2c/chips/x1205.c
new file mode 100644
index 000000000000..7da366cdc18c
--- /dev/null
+++ b/drivers/i2c/chips/x1205.c
@@ -0,0 +1,698 @@
+/*
+ *  x1205.c - An i2c driver for the Xicor X1205 RTC
+ *  Copyright 2004 Karen Spearel
+ *  Copyright 2005 Alessandro Zummo
+ *
+ *  please send all reports to:
+ *      kas11 at tampabay dot rr dot com
+ *      a dot zummo at towertech dot it
+ *
+ *  based on the other drivers in this same directory.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/string.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/list.h>
+
+#include <linux/x1205.h>
+
+#define DRV_VERSION "0.9.9"
+
+/* Addresses to scan: none. This chip is located at
+ * 0x6f and uses a two bytes register addressing.
+ * Two bytes need to be written to read a single register,
+ * while most other chips just require one and take the second
+ * one as the data to be written. To prevent corrupting
+ * unknown chips, the user must explicitely set the probe parameter.
+ */
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD;
+I2C_CLIENT_MODULE_PARM(hctosys,
+        "Set the system time from the hardware clock upon initialization");
+
+/* offsets into CCR area */
+
+#define CCR_SEC                 0
+#define CCR_MIN                 1
+#define CCR_HOUR                2
+#define CCR_MDAY                3
+#define CCR_MONTH               4
+#define CCR_YEAR                5
+#define CCR_WDAY                6
+#define CCR_Y2K                 7
+
+#define X1205_REG_SR            0x3F    /* status register */
+#define X1205_REG_Y2K           0x37
+#define X1205_REG_DW            0x36
+#define X1205_REG_YR            0x35
+#define X1205_REG_MO            0x34
+#define X1205_REG_DT            0x33
+#define X1205_REG_HR            0x32
+#define X1205_REG_MN            0x31
+#define X1205_REG_SC            0x30
+#define X1205_REG_DTR           0x13
+#define X1205_REG_ATR           0x12
+#define X1205_REG_INT           0x11
+#define X1205_REG_0             0x10
+#define X1205_REG_Y2K1          0x0F
+#define X1205_REG_DWA1          0x0E
+#define X1205_REG_YRA1          0x0D
+#define X1205_REG_MOA1          0x0C
+#define X1205_REG_DTA1          0x0B
+#define X1205_REG_HRA1          0x0A
+#define X1205_REG_MNA1          0x09
+#define X1205_REG_SCA1          0x08
+#define X1205_REG_Y2K0          0x07
+#define X1205_REG_DWA0          0x06
+#define X1205_REG_YRA0          0x05
+#define X1205_REG_MOA0          0x04
+#define X1205_REG_DTA0          0x03
+#define X1205_REG_HRA0          0x02
+#define X1205_REG_MNA0          0x01
+#define X1205_REG_SCA0          0x00
+
+#define X1205_CCR_BASE          0x30    /* Base address of CCR */
+#define X1205_ALM0_BASE         0x00    /* Base address of ALARM0 */
+
+#define X1205_SR_RTCF           0x01    /* Clock failure */
+#define X1205_SR_WEL            0x02    /* Write Enable Latch */
+#define X1205_SR_RWEL           0x04    /* Register Write Enable */
+
+#define X1205_DTR_DTR0          0x01
+#define X1205_DTR_DTR1          0x02
+#define X1205_DTR_DTR2          0x04
+
+#define X1205_HR_MIL            0x80    /* Set in ccr.hour for 24 hr mode */
+
+/* Prototypes */
+static int x1205_attach(struct i2c_adapter *adapter);
+static int x1205_detach(struct i2c_client *client);
+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
+static int x1205_command(struct i2c_client *client, unsigned int cmd,
+        void *arg);
+
+static struct i2c_driver x1205_driver = {
+        .owner          = THIS_MODULE,
+        .name           = "x1205",
+        .flags          = I2C_DF_NOTIFY,
+        .attach_adapter = &x1205_attach,
+        .detach_client  = &x1205_detach,
+};
+
+struct x1205_data {
+        struct i2c_client client;
+        struct list_head list;
+        unsigned int epoch;
+};
+
+static const unsigned char days_in_mo[] =
+        { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+
+static LIST_HEAD(x1205_clients);
+
+/* Workaround until the I2C subsytem will allow to send
+ * commands to a specific client. This function will send the command
+ * to the first client.
+ */
+int x1205_do_command(unsigned int cmd, void *arg)
+{
+        struct list_head *walk;
+        struct list_head *tmp;
+        struct x1205_data *data;
+
+        list_for_each_safe(walk, tmp, &x1205_clients) {
+                data = list_entry(walk, struct x1205_data, list);
+                return x1205_command(&data->client, cmd, arg);
+        }
+
+        return -ENODEV;
+}
+
+#define is_leap(year) \
+        ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+/* make sure the rtc_time values are in bounds */
+static int x1205_validate_tm(struct rtc_time *tm)
+{
+        int year = tm->tm_year + 1900;
+
+        if ((tm->tm_year < 70) || (tm->tm_year > 255))
+                return -EINVAL;
+
+        if ((tm->tm_mon > 11) || (tm->tm_mday == 0))
+                return -EINVAL;
+
+        if (tm->tm_mday > days_in_mo[tm->tm_mon]
+                + ((tm->tm_mon == 1) && is_leap(year)))
+                return -EINVAL;
+
+        if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60))
+                return -EINVAL;
+
+        return 0;
+}
+
+/*
+ * In the routines that deal directly with the x1205 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
+ * Epoch is initialized as 2000. Time is set to UTC.
+ */
+static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
+                                u8 reg_base)
+{
+        unsigned char dt_addr[2] = { 0, reg_base };
+        static unsigned char sr_addr[2] = { 0, X1205_REG_SR };
+
+        unsigned char buf[8], sr;
+
+        struct i2c_msg msgs[] = {
+                { client->addr, 0, 2, sr_addr },        /* setup read ptr */
+                { client->addr, I2C_M_RD, 1, &sr },     /* read status */
+                { client->addr, 0, 2, dt_addr },        /* setup read ptr */
+                { client->addr, I2C_M_RD, 8, buf },     /* read date */
+        };
+
+        struct x1205_data *data = i2c_get_clientdata(client);
+
+        /* read status register */
+        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+                dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+                return -EIO;
+        }
+
+        /* check for battery failure */
+        if (sr & X1205_SR_RTCF) {
+                dev_warn(&client->dev,
+                        "Clock had a power failure, you must set the date.\n");
+                return -EINVAL;
+        }
+
+        /* read date registers */
+        if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) {
+                dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+                return -EIO;
+        }
+
+        dev_dbg(&client->dev,
+                "%s: raw read data - sec=%02x, min=%02x, hr=%02x, "
+                "mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n",
+                __FUNCTION__,
+                buf[0], buf[1], buf[2], buf[3],
+                buf[4], buf[5], buf[6], buf[7]);
+
+        tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
+        tm->tm_min = BCD2BIN(buf[CCR_MIN]);
+        tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
+        tm->tm_mday = BCD2BIN(buf[CCR_MDAY]);
+        tm->tm_mon = BCD2BIN(buf[CCR_MONTH]);
+        data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100;
+        tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900;
+        tm->tm_wday = buf[CCR_WDAY];
+
+        dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+                "mday=%d, mon=%d, year=%d, wday=%d\n",
+                __FUNCTION__,
+                tm->tm_sec, tm->tm_min, tm->tm_hour,
+                tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+        return 0;
+}
+
+static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
+                                int datetoo, u8 reg_base)
+{
+        int i, err, xfer;
+
+        unsigned char buf[8];
+
+        static const unsigned char wel[3] = { 0, X1205_REG_SR,
+                                                X1205_SR_WEL };
+
+        static const unsigned char rwel[3] = { 0, X1205_REG_SR,
+                                                X1205_SR_WEL | X1205_SR_RWEL };
+
+        static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 };
+
+        struct x1205_data *data = i2c_get_clientdata(client);
+
+        /* check if all values in the tm struct are correct */
+        if ((err = x1205_validate_tm(tm)) < 0)
+                return err;
+
+        dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
+                "mday=%d, mon=%d, year=%d, wday=%d\n",
+                __FUNCTION__,
+                tm->tm_sec, tm->tm_min, tm->tm_hour,
+                tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+        buf[CCR_SEC] = BIN2BCD(tm->tm_sec);
+        buf[CCR_MIN] = BIN2BCD(tm->tm_min);
+
+        /* set hour and 24hr bit */
+        buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL;
+
+        /* should we also set the date? */
+        if (datetoo) {
+                buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
+
+                /* month, 0 - 11 */
+                buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
+
+                /* year, since 1900 */
+                buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch);
+                buf[CCR_WDAY] = tm->tm_wday & 0x07;
+                buf[CCR_Y2K] = BIN2BCD(data->epoch / 100);
+        }
+
+        /* this sequence is required to unlock the chip */
+        xfer = i2c_master_send(client, wel, 3);
+        if (xfer != 3) {
+                dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer);
+                return -EIO;
+        }
+
+        xfer = i2c_master_send(client, rwel, 3);
+        if (xfer != 3) {
+                dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer);
+                return -EIO;
+        }
+
+        /* write register's data */
+        for (i = 0; i < (datetoo ? 8 : 3); i++) {
+                unsigned char rdata[3] = { 0, reg_base + i, buf[i] };
+
+                xfer = i2c_master_send(client, rdata, 3);
+                if (xfer != 3) {
+                        dev_err(&client->dev,
+                                "%s: xfer=%d addr=%02x, data=%02x\n",
+                                __FUNCTION__,
+                                 xfer, rdata[1], rdata[2]);
+                        return -EIO;
+                }
+        };
+
+        /* disable further writes */
+        xfer = i2c_master_send(client, diswe, 3);
+        if (xfer != 3) {
+                dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int x1205_get_dtrim(struct i2c_client *client, int *trim)
+{
+        unsigned char dtr;
+        static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR };
+
+        struct i2c_msg msgs[] = {
+                { client->addr, 0, 2, dtr_addr },       /* setup read ptr */
+                { client->addr, I2C_M_RD, 1, &dtr },    /* read dtr */
+        };
+
+        /* read dtr register */
+        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+                dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+                return -EIO;
+        }
+
+        dev_dbg(&client->dev, "%s: raw dtr=%x\n", __FUNCTION__, dtr);
+
+        *trim = 0;
+
+        if (dtr & X1205_DTR_DTR0)
+                *trim += 20;
+
+        if (dtr & X1205_DTR_DTR1)
+                *trim += 10;
+
+        if (dtr & X1205_DTR_DTR2)
+                *trim = -*trim;
+
+        return 0;
+}
+
+static int x1205_get_atrim(struct i2c_client *client, int *trim)
+{
+        s8 atr;
+        static unsigned char atr_addr[2] = { 0, X1205_REG_ATR };
+
+        struct i2c_msg msgs[] = {
+                { client->addr, 0, 2, atr_addr },       /* setup read ptr */
+                { client->addr, I2C_M_RD, 1, &atr },    /* read atr */
+        };
+
+        /* read atr register */
+        if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+                dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+                return -EIO;
+        }
+
+        dev_dbg(&client->dev, "%s: raw atr=%x\n", __FUNCTION__, atr);
+
+        /* atr is a two's complement value on 6 bits,
+         * perform sign extension. The formula is
+         * Catr = (atr * 0.25pF) + 11.00pF.
+         */
+        if (atr & 0x20)
+                atr |= 0xC0;
+
+        dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __FUNCTION__, atr, atr);
+
+        *trim = (atr * 250) + 11000;
+
+        dev_dbg(&client->dev, "%s: real=%d\n", __FUNCTION__, *trim);
+
+        return 0;
+}
+
+static int x1205_hctosys(struct i2c_client *client)
+{
+        int err;
+
+        struct rtc_time tm;
+        struct timespec tv;
+
+        err = x1205_command(client, X1205_CMD_GETDATETIME, &tm);
+
+        if (err) {
+                dev_err(&client->dev,
+                        "Unable to set the system clock\n");
+                return err;
+        }
+
+        /* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
+         * whether it stores the most close value or the value with partial
+         * seconds truncated. However, it is important that we use it to store
+         * the truncated value. This is because otherwise it is necessary,
+         * in an rtc sync function, to read both xtime.tv_sec and
+         * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read
+         * of >32bits is not possible. So storing the most close value would
+         * slow down the sync API. So here we have the truncated value and
+         * the best guess is to add 0.5s.
+         */
+
+        tv.tv_nsec = NSEC_PER_SEC >> 1;
+
+        /* WARNING: this is not the C library 'mktime' call, it is a built in
+         * inline function from include/linux/time.h.  It expects (requires)
+         * the month to be in the range 1-12
+         */
+
+        tv.tv_sec  = mktime(tm.tm_year + 1900, tm.tm_mon + 1,
+                                tm.tm_mday, tm.tm_hour,
+                                tm.tm_min, tm.tm_sec);
+
+        do_settimeofday(&tv);
+
+        dev_info(&client->dev,
+                "setting the system clock to %d-%d-%d %d:%d:%d\n",
+                tm.tm_year + 1900, tm.tm_mon + 1,
+                tm.tm_mday, tm.tm_hour, tm.tm_min,
+                tm.tm_sec);
+
+        return 0;
+}
+
+struct x1205_limit
+{
+        unsigned char reg;
+        unsigned char mask;
+        unsigned char min;
+        unsigned char max;
+};
+
+static int x1205_validate_client(struct i2c_client *client)
+{
+        int i, xfer;
+
+        /* Probe array. We will read the register at the specified
+         * address and check if the given bits are zero.
+         */
+        static const unsigned char probe_zero_pattern[] = {
+                /* register, mask */
+                X1205_REG_SR,   0x18,
+                X1205_REG_DTR,  0xF8,
+                X1205_REG_ATR,  0xC0,
+                X1205_REG_INT,  0x18,
+                X1205_REG_0,    0xFF,
+        };
+
+        static const struct x1205_limit probe_limits_pattern[] = {
+                /* register, mask, min, max */
+                { X1205_REG_Y2K,        0xFF,   19,     20      },
+                { X1205_REG_DW,         0xFF,   0,      6       },
+                { X1205_REG_YR,         0xFF,   0,      99      },
+                { X1205_REG_MO,         0xFF,   0,      12      },
+                { X1205_REG_DT,         0xFF,   0,      31      },
+                { X1205_REG_HR,         0x7F,   0,      23      },
+                { X1205_REG_MN,         0xFF,   0,      59      },
+                { X1205_REG_SC,         0xFF,   0,      59      },
+                { X1205_REG_Y2K1,       0xFF,   19,     20      },
+                { X1205_REG_Y2K0,       0xFF,   19,     20      },
+        };
+
+        /* check that registers have bits a 0 where expected */
+        for (i = 0; i < ARRAY_SIZE(probe_zero_pattern); i += 2) {
+                unsigned char buf;
+
+                unsigned char addr[2] = { 0, probe_zero_pattern[i] };
+
+                struct i2c_msg msgs[2] = {
+                        { client->addr, 0, 2, addr },
+                        { client->addr, I2C_M_RD, 1, &buf },
+                };
+
+                xfer = i2c_transfer(client->adapter, msgs, 2);
+                if (xfer != 2) {
+                        dev_err(&client->adapter->dev,
+                                "%s: could not read register %x\n",
+                                __FUNCTION__, addr[1]);
+
+                        return -EIO;
+                }
+
+                if ((buf & probe_zero_pattern[i+1]) != 0) {
+                        dev_err(&client->adapter->dev,
+                                "%s: register=%02x, zero pattern=%d, value=%x\n",
+                                __FUNCTION__, addr[1], i, buf);
+
+                        return -ENODEV;
+                }
+        }
+
+        /* check limits (only registers with bcd values) */
+        for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) {
+                unsigned char reg, value;
+
+                unsigned char addr[2] = { 0, probe_limits_pattern[i].reg };
+
+                struct i2c_msg msgs[2] = {
+                        { client->addr, 0, 2, addr },
+                        { client->addr, I2C_M_RD, 1, &reg },
+                };
+
+                xfer = i2c_transfer(client->adapter, msgs, 2);
+
+                if (xfer != 2) {
+                        dev_err(&client->adapter->dev,
+                                "%s: could not read register %x\n",
+                                __FUNCTION__, addr[1]);
+
+                        return -EIO;
+                }
+
+                value = BCD2BIN(reg & probe_limits_pattern[i].mask);
+
+                if (value > probe_limits_pattern[i].max ||
+                        value < probe_limits_pattern[i].min) {
+                        dev_dbg(&client->adapter->dev,
+                                "%s: register=%x, lim pattern=%d, value=%d\n",
+                                __FUNCTION__, addr[1], i, value);
+
+                        return -ENODEV;
+                }
+        }
+
+        return 0;
+}
+
+static int x1205_attach(struct i2c_adapter *adapter)
+{
+        dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+        return i2c_probe(adapter, &addr_data, x1205_probe);
+}
+
+int x1205_direct_attach(int adapter_id,
+        struct i2c_client_address_data *address_data)
+{
+        int err;
+        struct i2c_adapter *adapter = i2c_get_adapter(adapter_id);
+
+        if (adapter) {
+                err = i2c_probe(adapter,
+                        address_data, x1205_probe);
+
+                i2c_put_adapter(adapter);
+
+                return err;
+        }
+
+        return -ENODEV;
+}
+
+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
+{
+        struct i2c_client *client;
+        struct x1205_data *data;
+
+        int err = 0;
+
+        dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+        if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+                err = -ENODEV;
+                goto exit;
+        }
+
+        if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) {
+                err = -ENOMEM;
+                goto exit;
+        }
+
+        /* Initialize our structures */
+        data->epoch = 2000;
+
+        client = &data->client;
+        client->addr = address;
+        client->driver = &x1205_driver;
+        client->adapter = adapter;
+
+        strlcpy(client->name, "x1205", I2C_NAME_SIZE);
+
+        i2c_set_clientdata(client, data);
+
+        /* Verify the chip is really an X1205 */
+        if (kind < 0) {
+                if (x1205_validate_client(client) < 0) {
+                        err = -ENODEV;
+                        goto exit_kfree;
+                }
+        }
+
+        /* Inform the i2c layer */
+        if ((err = i2c_attach_client(client)))
+                goto exit_kfree;
+
+        list_add(&data->list, &x1205_clients);
+
+        dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+        /* If requested, set the system time */
+        if (hctosys)
+                x1205_hctosys(client);
+
+        return 0;
+
+exit_kfree:
+        kfree(data);
+
+exit:
+        return err;
+}
+
+static int x1205_detach(struct i2c_client *client)
+{
+        int err;
+        struct x1205_data *data = i2c_get_clientdata(client);
+
+        dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+
+        if ((err = i2c_detach_client(client)))
+                return err;
+
+        list_del(&data->list);
+
+        kfree(data);
+
+        return 0;
+}
+
+static int x1205_command(struct i2c_client *client, unsigned int cmd,
+        void *param)
+{
+        if (param == NULL)
+                return -EINVAL;
+
+        if (!capable(CAP_SYS_TIME))
+                return -EACCES;
+
+        dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
+
+        switch (cmd) {
+        case X1205_CMD_GETDATETIME:
+                return x1205_get_datetime(client, param, X1205_CCR_BASE);
+
+        case X1205_CMD_SETTIME:
+                return x1205_set_datetime(client, param, 0,
+                                X1205_CCR_BASE);
+
+        case X1205_CMD_SETDATETIME:
+                return x1205_set_datetime(client, param, 1,
+                                X1205_CCR_BASE);
+
+        case X1205_CMD_GETALARM:
+                return x1205_get_datetime(client, param, X1205_ALM0_BASE);
+
+        case X1205_CMD_SETALARM:
+                return x1205_set_datetime(client, param, 1,
+                                X1205_ALM0_BASE);
+
+        case X1205_CMD_GETDTRIM:
+                return x1205_get_dtrim(client, param);
+
+        case X1205_CMD_GETATRIM:
+                return x1205_get_atrim(client, param);
+
+        default:
+                return -EINVAL;
+        }
+}
+
+static int __init x1205_init(void)
+{
+        return i2c_add_driver(&x1205_driver);
+}
+
+static void __exit x1205_exit(void)
+{
+        i2c_del_driver(&x1205_driver);
+}
+
+MODULE_AUTHOR(
+        "Karen Spearel <kas11@tampabay.rr.com>, "
+        "Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Xicor X1205 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+EXPORT_SYMBOL_GPL(x1205_do_command);
+EXPORT_SYMBOL_GPL(x1205_direct_attach);
+
+module_init(x1205_init);
+module_exit(x1205_exit);
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 45aa0e54e297..02e335a04f09 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -19,7 +19,8 @@
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
    All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
-   SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com>                */
+   SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> and
+   Jean Delvare <khali@linux-fr.org> */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -85,6 +86,7 @@ void i2c_adapter_dev_release(struct device *dev)
 }
 
 struct device_driver i2c_adapter_driver = {
+        .owner = THIS_MODULE,
         .name = "i2c_adapter",
         .bus = &i2c_bus_type,
         .probe = i2c_device_probe,
@@ -98,6 +100,7 @@ static void i2c_adapter_class_dev_release(struct class_device *dev)
 }
 
 struct class i2c_adapter_class = {
+        .owner =        THIS_MODULE,
         .name =         "i2c-adapter",
         .release =      &i2c_adapter_class_dev_release,
 };
@@ -291,6 +294,7 @@ int i2c_add_driver(struct i2c_driver *driver)
         down(&core_lists);
 
         /* add the driver to the list of i2c drivers in the driver core */
+        driver->driver.owner = driver->owner;
         driver->driver.name = driver->name;
         driver->driver.bus = &i2c_bus_type;
         driver->driver.probe = i2c_device_probe;
@@ -706,10 +710,6 @@ int i2c_probe(struct i2c_adapter *adapter,
         int i, err;
         int adap_id = i2c_adapter_id(adapter);
 
-        /* Forget it if we can't probe using SMBUS_QUICK */
-        if (! i2c_check_functionality(adapter,I2C_FUNC_SMBUS_QUICK))
-                return -1;
-
         /* Force entries are done first, and are not affected by ignore
            entries */
         if (address_data->forces) {
@@ -736,6 +736,17 @@ int i2c_probe(struct i2c_adapter *adapter,
                 }
         }
 
+        /* Stop here if we can't use SMBUS_QUICK */
+        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) {
+                if (address_data->probe[0] == I2C_CLIENT_END
+                 && address_data->normal_i2c[0] == I2C_CLIENT_END)
+                        return 0;
+
+                dev_warn(&adapter->dev, "SMBus Quick command not supported, "
+                         "can't probe for chips\n");
+                return -1;
+        }
+
         /* Probe entries are done second, and are not affected by ignore
            entries either */
         for (i = 0; address_data->probe[i] != I2C_CLIENT_END; i += 2) {
@@ -820,101 +831,44 @@ crc8(u16 data)
         return (u8)(data >> 8);
 }
 
-/* CRC over count bytes in the first array plus the bytes in the rest
-   array if it is non-null. rest[0] is the (length of rest) - 1
-   and is included. */
-static u8 i2c_smbus_partial_pec(u8 crc, int count, u8 *first, u8 *rest)
+/* Incremental CRC8 over count bytes in the array pointed to by p */
+static u8 i2c_smbus_pec(u8 crc, u8 *p, size_t count)
 {
         int i;
 
         for(i = 0; i < count; i++)
-                crc = crc8((crc ^ first[i]) << 8);
-        if(rest != NULL)
-                for(i = 0; i <= rest[0]; i++)
-                        crc = crc8((crc ^ rest[i]) << 8);
+                crc = crc8((crc ^ p[i]) << 8);
         return crc;
 }
 
-static u8 i2c_smbus_pec(int count, u8 *first, u8 *rest)
+/* Assume a 7-bit address, which is reasonable for SMBus */
+static u8 i2c_smbus_msg_pec(u8 pec, struct i2c_msg *msg)
 {
-        return i2c_smbus_partial_pec(0, count, first, rest);
+        /* The address will be sent first */
+        u8 addr = (msg->addr << 1) | !!(msg->flags & I2C_M_RD);
+        pec = i2c_smbus_pec(pec, &addr, 1);
+
+        /* The data buffer follows */
+        return i2c_smbus_pec(pec, msg->buf, msg->len);
 }
 
-/* Returns new "size" (transaction type)
-   Note that we convert byte to byte_data and byte_data to word_data
-   rather than invent new xxx_PEC transactions. */
-static int i2c_smbus_add_pec(u16 addr, u8 command, int size,
-                             union i2c_smbus_data *data)
+/* Used for write only transactions */
+static inline void i2c_smbus_add_pec(struct i2c_msg *msg)
 {
-        u8 buf[3];
-
-        buf[0] = addr << 1;
-        buf[1] = command;
-        switch(size) {
-                case I2C_SMBUS_BYTE:
-                        data->byte = i2c_smbus_pec(2, buf, NULL);
-                        size = I2C_SMBUS_BYTE_DATA;
-                        break;
-                case I2C_SMBUS_BYTE_DATA:
-                        buf[2] = data->byte;
-                        data->word = buf[2] ||
-                                    (i2c_smbus_pec(3, buf, NULL) << 8);
-                        size = I2C_SMBUS_WORD_DATA;
-                        break;
-                case I2C_SMBUS_WORD_DATA:
-                        /* unsupported */
-                        break;
-                case I2C_SMBUS_BLOCK_DATA:
-                        data->block[data->block[0] + 1] =
-                                     i2c_smbus_pec(2, buf, data->block);
-                        size = I2C_SMBUS_BLOCK_DATA_PEC;
-                        break;
-        }
-        return size;    
+        msg->buf[msg->len] = i2c_smbus_msg_pec(0, msg);
+        msg->len++;
 }
 
-static int i2c_smbus_check_pec(u16 addr, u8 command, int size, u8 partial,
-                               union i2c_smbus_data *data)
+/* Return <0 on CRC error
+   If there was a write before this read (most cases) we need to take the
+   partial CRC from the write part into account.
+   Note that this function does modify the message (we need to decrease the
+   message length to hide the CRC byte from the caller). */
+static int i2c_smbus_check_pec(u8 cpec, struct i2c_msg *msg)
 {
-        u8 buf[3], rpec, cpec;
+        u8 rpec = msg->buf[--msg->len];
+        cpec = i2c_smbus_msg_pec(cpec, msg);
 
-        buf[1] = command;
-        switch(size) {
-                case I2C_SMBUS_BYTE_DATA:
-                        buf[0] = (addr << 1) | 1;
-                        cpec = i2c_smbus_pec(2, buf, NULL);
-                        rpec = data->byte;
-                        break;
-                case I2C_SMBUS_WORD_DATA:
-                        buf[0] = (addr << 1) | 1;
-                        buf[2] = data->word & 0xff;
-                        cpec = i2c_smbus_pec(3, buf, NULL);
-                        rpec = data->word >> 8;
-                        break;
-                case I2C_SMBUS_WORD_DATA_PEC:
-                        /* unsupported */
-                        cpec = rpec = 0;
-                        break;
-                case I2C_SMBUS_PROC_CALL_PEC:
-                        /* unsupported */
-                        cpec = rpec = 0;
-                        break;
-                case I2C_SMBUS_BLOCK_DATA_PEC:
-                        buf[0] = (addr << 1);
-                        buf[2] = (addr << 1) | 1;
-                        cpec = i2c_smbus_pec(3, buf, data->block);
-                        rpec = data->block[data->block[0] + 1];
-                        break;
-                case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-                        buf[0] = (addr << 1) | 1;
-                        rpec = i2c_smbus_partial_pec(partial, 1,
-                                                     buf, data->block);
-                        cpec = data->block[data->block[0] + 1];
-                        break;
-                default:
-                        cpec = rpec = 0;
-                        break;
-        }
         if (rpec != cpec) {
                 pr_debug("i2c-core: Bad PEC 0x%02x vs. 0x%02x\n",
                         rpec, cpec);
@@ -941,9 +895,8 @@ s32 i2c_smbus_read_byte(struct i2c_client *client)
 
 s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value)
 {
-        union i2c_smbus_data data;      /* only for PEC */
         return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-                              I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,&data);
+                              I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
 }
 
 s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command)
@@ -1026,13 +979,14 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
           need to use only one message; when reading, we need two. We initialize
           most things with sane defaults, to keep the code below somewhat
           simpler. */
-        unsigned char msgbuf0[34];
-        unsigned char msgbuf1[34];
+        unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3];
+        unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2];
         int num = read_write == I2C_SMBUS_READ?2:1;
         struct i2c_msg msg[2] = { { addr, flags, 1, msgbuf0 }, 
                                   { addr, flags | I2C_M_RD, 0, msgbuf1 }
                                 };
         int i;
+        u8 partial_pec = 0;
 
         msgbuf0[0] = command;
         switch(size) {
@@ -1075,7 +1029,6 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
                 msgbuf0[2] = (data->word >> 8) & 0xff;
                 break;
         case I2C_SMBUS_BLOCK_DATA:
-        case I2C_SMBUS_BLOCK_DATA_PEC:
                 if (read_write == I2C_SMBUS_READ) {
                         dev_err(&adapter->dev, "Block read not supported "
                                "under I2C emulation!\n");
@@ -1088,23 +1041,20 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
                                        data->block[0]);
                                 return -1;
                         }
-                        if(size == I2C_SMBUS_BLOCK_DATA_PEC)
-                                (msg[0].len)++;
-                        for (i = 1; i <= msg[0].len; i++)
+                        for (i = 1; i < msg[0].len; i++)
                                 msgbuf0[i] = data->block[i-1];
                 }
                 break;
         case I2C_SMBUS_BLOCK_PROC_CALL:
-        case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
                 dev_dbg(&adapter->dev, "Block process call not supported "
                        "under I2C emulation!\n");
                 return -1;
         case I2C_SMBUS_I2C_BLOCK_DATA:
                 if (read_write == I2C_SMBUS_READ) {
-                        msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX;
+                        msg[1].len = I2C_SMBUS_BLOCK_MAX;
                 } else {
                         msg[0].len = data->block[0] + 1;
-                        if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 1) {
+                        if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 1) {
                                 dev_err(&adapter->dev, "i2c_smbus_xfer_emulated called with "
                                        "invalid block write size (%d)\n",
                                        data->block[0]);
@@ -1120,9 +1070,30 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
                 return -1;
         }
 
+        i = ((flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK
+                                      && size != I2C_SMBUS_I2C_BLOCK_DATA);
+        if (i) {
+                /* Compute PEC if first message is a write */
+                if (!(msg[0].flags & I2C_M_RD)) {
+                        if (num == 1) /* Write only */
+                                i2c_smbus_add_pec(&msg[0]);
+                        else /* Write followed by read */
+                                partial_pec = i2c_smbus_msg_pec(0, &msg[0]);
+                }
+                /* Ask for PEC if last message is a read */
+                if (msg[num-1].flags & I2C_M_RD)
+                        msg[num-1].len++;
+        }
+
         if (i2c_transfer(adapter, msg, num) < 0)
                 return -1;
 
+        /* Check PEC if last message is a read */
+        if (i && (msg[num-1].flags & I2C_M_RD)) {
+                if (i2c_smbus_check_pec(partial_pec, &msg[num-1]) < 0)
+                        return -1;
+        }
+
         if (read_write == I2C_SMBUS_READ)
                 switch(size) {
                         case I2C_SMBUS_BYTE:
@@ -1137,8 +1108,8 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
                                 break;
                         case I2C_SMBUS_I2C_BLOCK_DATA:
                                 /* fixed at 32 for now */
-                                data->block[0] = I2C_SMBUS_I2C_BLOCK_MAX;
-                                for (i = 0; i < I2C_SMBUS_I2C_BLOCK_MAX; i++)
+                                data->block[0] = I2C_SMBUS_BLOCK_MAX;
+                                for (i = 0; i < I2C_SMBUS_BLOCK_MAX; i++)
                                         data->block[i+1] = msgbuf1[i];
                                 break;
                 }
@@ -1151,28 +1122,8 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
                    union i2c_smbus_data * data)
 {
         s32 res;
-        int swpec = 0;
-        u8 partial = 0;
 
         flags &= I2C_M_TEN | I2C_CLIENT_PEC;
-        if((flags & I2C_CLIENT_PEC) &&
-           !(i2c_check_functionality(adapter, I2C_FUNC_SMBUS_HWPEC_CALC))) {
-                swpec = 1;
-                if(read_write == I2C_SMBUS_READ &&
-                   size == I2C_SMBUS_BLOCK_DATA)
-                        size = I2C_SMBUS_BLOCK_DATA_PEC;
-                else if(size == I2C_SMBUS_PROC_CALL)
-                        size = I2C_SMBUS_PROC_CALL_PEC;
-                else if(size == I2C_SMBUS_BLOCK_PROC_CALL) {
-                        i2c_smbus_add_pec(addr, command,
-                                          I2C_SMBUS_BLOCK_DATA, data);
-                        partial = data->block[data->block[0] + 1];
-                        size = I2C_SMBUS_BLOCK_PROC_CALL_PEC;
-                } else if(read_write == I2C_SMBUS_WRITE &&
-                          size != I2C_SMBUS_QUICK &&
-                          size != I2C_SMBUS_I2C_BLOCK_DATA)
-                        size = i2c_smbus_add_pec(addr, command, size, data);
-        }
 
         if (adapter->algo->smbus_xfer) {
                 down(&adapter->bus_lock);
@@ -1183,13 +1134,6 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
                 res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write,
                                               command,size,data);
 
-        if(res >= 0 && swpec &&
-           size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA &&
-           (read_write == I2C_SMBUS_READ || size == I2C_SMBUS_PROC_CALL_PEC ||
-            size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)) {
-                if(i2c_smbus_check_pec(addr, command, size, partial, data))
-                        return -1;
-        }
         return res;
 }
 
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index aa7a4fadef64..ea14c8f1c82b 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -26,15 +26,11 @@
 
 /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */
 
-/* The devfs code is contributed by Philipp Matthias Hahn 
-   <pmhahn@titan.lahn.de> */
-
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
@@ -80,10 +76,9 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)
 {
         struct i2c_dev *i2c_dev;
 
-        i2c_dev = kmalloc(sizeof(*i2c_dev), GFP_KERNEL);
+        i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);
         if (!i2c_dev)
                 return ERR_PTR(-ENOMEM);
-        memset(i2c_dev, 0x00, sizeof(*i2c_dev));
 
         spin_lock(&i2c_dev_array_lock);
         if (i2c_dev_array[adap->nr]) {
@@ -177,8 +172,8 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file,
         int i,datasize,res;
         unsigned long funcs;
 
-        dev_dbg(&client->adapter->dev, "i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n",
-                iminor(inode),cmd, arg);
+        dev_dbg(&client->adapter->dev, "ioctl, cmd=0x%02x, arg=0x%02lx\n",
+                cmd, arg);
 
         switch ( cmd ) {
         case I2C_SLAVE:
@@ -432,8 +427,6 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
         if (IS_ERR(i2c_dev))
                 return PTR_ERR(i2c_dev);
 
-        devfs_mk_cdev(MKDEV(I2C_MAJOR, i2c_dev->minor),
-                        S_IFCHR|S_IRUSR|S_IWUSR, "i2c/%d", i2c_dev->minor);
         pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
                  adap->name, i2c_dev->minor);
 
@@ -466,7 +459,6 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap)
                 return -ENODEV;
 
         init_completion(&i2c_dev->released);
-        devfs_remove("i2c/%d", i2c_dev->minor);
         return_i2c_dev(i2c_dev);
         class_device_unregister(&i2c_dev->class_dev);
         wait_for_completion(&i2c_dev->released);
@@ -522,8 +514,6 @@ static int __init i2c_dev_init(void)
         if (res)
                 goto out_unreg_class;
 
-        devfs_mk_dir("i2c");
-
         return 0;
 
 out_unreg_class:
@@ -539,7 +529,6 @@ static void __exit i2c_dev_exit(void)
 {
         i2c_del_driver(&i2cdev_driver);
         class_unregister(&i2c_dev_class);
-        devfs_remove("i2c");
         unregister_chrdev(I2C_MAJOR,"i2c");
 }