Merge branch 'for-linus' into for-2.6.33

Conflicts:
	block/cfq-iosched.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

8 files changed, 325 insertions, 68 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 6857560144b..700e93adeb3 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -675,7 +675,7 @@ config SENSORS_SHT15
 
 config SENSORS_S3C
 	tristate "S3C24XX/S3C64XX Inbuilt ADC"
-	depends on ARCH_S3C2410 || ARCH_S3C64XX
+	depends on ARCH_S3C2410
 	help
 	  If you say yes here you get support for the on-board ADCs of
 	  the Samsung S3C24XX or S3C64XX series of SoC
diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
index fe4fa29c921..5a3ee00c0e7 100644
--- a/drivers/hwmon/asus_atk0110.c
+++ b/drivers/hwmon/asus_atk0110.c
@@ -35,18 +35,22 @@
 #define METHOD_OLD_ENUM_FAN	"FSIF"
 
 #define ATK_MUX_HWMON		0x00000006ULL
+#define ATK_MUX_MGMT		0x00000011ULL
 
 #define ATK_CLASS_MASK		0xff000000ULL
 #define ATK_CLASS_FREQ_CTL	0x03000000ULL
 #define ATK_CLASS_FAN_CTL	0x04000000ULL
 #define ATK_CLASS_HWMON		0x06000000ULL
+#define ATK_CLASS_MGMT		0x11000000ULL
 
 #define ATK_TYPE_MASK		0x00ff0000ULL
 #define HWMON_TYPE_VOLT		0x00020000ULL
 #define HWMON_TYPE_TEMP		0x00030000ULL
 #define HWMON_TYPE_FAN		0x00040000ULL
 
-#define HWMON_SENSOR_ID_MASK	0x0000ffffULL
+#define ATK_ELEMENT_ID_MASK	0x0000ffffULL
+
+#define ATK_EC_ID		0x11060004ULL
 
 enum atk_pack_member {
 	HWMON_PACK_FLAGS,
@@ -89,6 +93,9 @@ struct atk_data {
 	/* new inteface */
 	acpi_handle enumerate_handle;
 	acpi_handle read_handle;
+	acpi_handle write_handle;
+
+	bool disable_ec;
 
 	int voltage_count;
 	int temperature_count;
@@ -129,9 +136,22 @@ struct atk_sensor_data {
 	char const *acpi_name;
 };
 
-struct atk_acpi_buffer_u64 {
-	union acpi_object buf;
-	u64 value;
+/* Return buffer format:
+ * [0-3] "value" is valid flag
+ * [4-7] value
+ * [8- ] unknown stuff on newer mobos
+ */
+struct atk_acpi_ret_buffer {
+	u32 flags;
+	u32 value;
+	u8 data[];
+};
+
+/* Input buffer used for GITM and SITM methods */
+struct atk_acpi_input_buf {
+	u32 id;
+	u32 param1;
+	u32 param2;
 };
 
 static int atk_add(struct acpi_device *device);
@@ -439,52 +459,147 @@ static int atk_read_value_old(struct atk_sensor_data *sensor, u64 *value)
 	return 0;
 }
 
-static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value)
+static union acpi_object *atk_ggrp(struct atk_data *data, u16 mux)
 {
-	struct atk_data *data = sensor->data;
 	struct device *dev = &data->acpi_dev->dev;
+	struct acpi_buffer buf;
+	acpi_status ret;
 	struct acpi_object_list params;
-	struct acpi_buffer ret;
 	union acpi_object id;
-	struct atk_acpi_buffer_u64 tmp;
-	acpi_status status;
+	union acpi_object *pack;
 
 	id.type = ACPI_TYPE_INTEGER;
-	id.integer.value = sensor->id;
-
+	id.integer.value = mux;
 	params.count = 1;
 	params.pointer = &id;
 
-	tmp.buf.type = ACPI_TYPE_BUFFER;
-	tmp.buf.buffer.pointer = (u8 *)&tmp.value;
-	tmp.buf.buffer.length = sizeof(u64);
-	ret.length = sizeof(tmp);
-	ret.pointer = &tmp;
+	buf.length = ACPI_ALLOCATE_BUFFER;
+	ret = acpi_evaluate_object(data->enumerate_handle, NULL, &params, &buf);
+	if (ret != AE_OK) {
+		dev_err(dev, "GGRP[%#x] ACPI exception: %s\n", mux,
+				acpi_format_exception(ret));
+		return ERR_PTR(-EIO);
+	}
+	pack = buf.pointer;
+	if (pack->type != ACPI_TYPE_PACKAGE) {
+		/* Execution was successful, but the id was not found */
+		ACPI_FREE(pack);
+		return ERR_PTR(-ENOENT);
+	}
+
+	if (pack->package.count < 1) {
+		dev_err(dev, "GGRP[%#x] package is too small\n", mux);
+		ACPI_FREE(pack);
+		return ERR_PTR(-EIO);
+	}
+	return pack;
+}
+
+static union acpi_object *atk_gitm(struct atk_data *data, u64 id)
+{
+	struct device *dev = &data->acpi_dev->dev;
+	struct atk_acpi_input_buf buf;
+	union acpi_object tmp;
+	struct acpi_object_list params;
+	struct acpi_buffer ret;
+	union acpi_object *obj;
+	acpi_status status;
+
+	buf.id = id;
+	buf.param1 = 0;
+	buf.param2 = 0;
 
+	tmp.type = ACPI_TYPE_BUFFER;
+	tmp.buffer.pointer = (u8 *)&buf;
+	tmp.buffer.length = sizeof(buf);
+
+	params.count = 1;
+	params.pointer = (void *)&tmp;
+
+	ret.length = ACPI_ALLOCATE_BUFFER;
 	status = acpi_evaluate_object_typed(data->read_handle, NULL, &params,
 			&ret, ACPI_TYPE_BUFFER);
 	if (status != AE_OK) {
-		dev_warn(dev, "%s: ACPI exception: %s\n", __func__,
+		dev_warn(dev, "GITM[%#llx] ACPI exception: %s\n", id,
 				acpi_format_exception(status));
-		return -EIO;
+		return ERR_PTR(-EIO);
+	}
+	obj = ret.pointer;
+
+	/* Sanity check */
+	if (obj->buffer.length < 8) {
+		dev_warn(dev, "Unexpected ASBF length: %u\n",
+				obj->buffer.length);
+		ACPI_FREE(obj);
+		return ERR_PTR(-EIO);
 	}
+	return obj;
+}
 
-	/* Return buffer format:
-	 * [0-3] "value" is valid flag
-	 * [4-7] value
-	 */
-	if (!(tmp.value & 0xffffffff)) {
+static union acpi_object *atk_sitm(struct atk_data *data,
+		struct atk_acpi_input_buf *buf)
+{
+	struct device *dev = &data->acpi_dev->dev;
+	struct acpi_object_list params;
+	union acpi_object tmp;
+	struct acpi_buffer ret;
+	union acpi_object *obj;
+	acpi_status status;
+
+	tmp.type = ACPI_TYPE_BUFFER;
+	tmp.buffer.pointer = (u8 *)buf;
+	tmp.buffer.length = sizeof(*buf);
+
+	params.count = 1;
+	params.pointer = &tmp;
+
+	ret.length = ACPI_ALLOCATE_BUFFER;
+	status = acpi_evaluate_object_typed(data->write_handle, NULL, &params,
+			&ret, ACPI_TYPE_BUFFER);
+	if (status != AE_OK) {
+		dev_warn(dev, "SITM[%#x] ACPI exception: %s\n", buf->id,
+				acpi_format_exception(status));
+		return ERR_PTR(-EIO);
+	}
+	obj = ret.pointer;
+
+	/* Sanity check */
+	if (obj->buffer.length < 8) {
+		dev_warn(dev, "Unexpected ASBF length: %u\n",
+				obj->buffer.length);
+		ACPI_FREE(obj);
+		return ERR_PTR(-EIO);
+	}
+	return obj;
+}
+
+static int atk_read_value_new(struct atk_sensor_data *sensor, u64 *value)
+{
+	struct atk_data *data = sensor->data;
+	struct device *dev = &data->acpi_dev->dev;
+	union acpi_object *obj;
+	struct atk_acpi_ret_buffer *buf;
+	int err = 0;
+
+	obj = atk_gitm(data, sensor->id);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
+	if (buf->flags == 0) {
 		/* The reading is not valid, possible causes:
 		 * - sensor failure
 		 * - enumeration was FUBAR (and we didn't notice)
 		 */
-		dev_info(dev, "Failure: %#llx\n", tmp.value);
-		return -EIO;
+		dev_warn(dev, "Read failed, sensor = %#llx\n", sensor->id);
+		err = -EIO;
+		goto out;
 	}
 
-	*value = (tmp.value & 0xffffffff00000000ULL) >> 32;
-
-	return 0;
+	*value = buf->value;
+out:
+	ACPI_FREE(obj);
+	return err;
 }
 
 static int atk_read_value(struct atk_sensor_data *sensor, u64 *value)
@@ -713,43 +828,141 @@ cleanup:
 	return ret;
 }
 
-static int atk_enumerate_new_hwmon(struct atk_data *data)
+static int atk_ec_present(struct atk_data *data)
 {
 	struct device *dev = &data->acpi_dev->dev;
-	struct acpi_buffer buf;
-	acpi_status ret;
-	struct acpi_object_list params;
-	union acpi_object id;
 	union acpi_object *pack;
-	int err;
+	union acpi_object *ec;
+	int ret;
 	int i;
 
-	dev_dbg(dev, "Enumerating hwmon sensors\n");
+	pack = atk_ggrp(data, ATK_MUX_MGMT);
+	if (IS_ERR(pack)) {
+		if (PTR_ERR(pack) == -ENOENT) {
+			/* The MGMT class does not exists - that's ok */
+			dev_dbg(dev, "Class %#llx not found\n", ATK_MUX_MGMT);
+			return 0;
+		}
+		return PTR_ERR(pack);
+	}
 
-	id.type = ACPI_TYPE_INTEGER;
-	id.integer.value = ATK_MUX_HWMON;
-	params.count = 1;
-	params.pointer = &id;
+	/* Search the EC */
+	ec = NULL;
+	for (i = 0; i < pack->package.count; i++) {
+		union acpi_object *obj = &pack->package.elements[i];
+		union acpi_object *id;
 
-	buf.length = ACPI_ALLOCATE_BUFFER;
-	ret = acpi_evaluate_object_typed(data->enumerate_handle, NULL, &params,
-			&buf, ACPI_TYPE_PACKAGE);
-	if (ret != AE_OK) {
-		dev_warn(dev, METHOD_ENUMERATE ": ACPI exception: %s\n",
-				acpi_format_exception(ret));
-		return -ENODEV;
+		if (obj->type != ACPI_TYPE_PACKAGE)
+			continue;
+
+		id = &obj->package.elements[0];
+		if (id->type != ACPI_TYPE_INTEGER)
+			continue;
+
+		if (id->integer.value == ATK_EC_ID) {
+			ec = obj;
+			break;
+		}
 	}
 
-	/* Result must be a package */
-	pack = buf.pointer;
+	ret = (ec != NULL);
+	if (!ret)
+		/* The system has no EC */
+		dev_dbg(dev, "EC not found\n");
 
-	if (pack->package.count < 1) {
-		dev_dbg(dev, "%s: hwmon package is too small: %d\n", __func__,
-				pack->package.count);
-		err = -EINVAL;
-		goto out;
+	ACPI_FREE(pack);
+	return ret;
+}
+
+static int atk_ec_enabled(struct atk_data *data)
+{
+	struct device *dev = &data->acpi_dev->dev;
+	union acpi_object *obj;
+	struct atk_acpi_ret_buffer *buf;
+	int err;
+
+	obj = atk_gitm(data, ATK_EC_ID);
+	if (IS_ERR(obj)) {
+		dev_err(dev, "Unable to query EC status\n");
+		return PTR_ERR(obj);
+	}
+	buf = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
+
+	if (buf->flags == 0) {
+		dev_err(dev, "Unable to query EC status\n");
+		err = -EIO;
+	} else {
+		err = (buf->value != 0);
+		dev_dbg(dev, "EC is %sabled\n",
+				err ? "en" : "dis");
+	}
+
+	ACPI_FREE(obj);
+	return err;
+}
+
+static int atk_ec_ctl(struct atk_data *data, int enable)
+{
+	struct device *dev = &data->acpi_dev->dev;
+	union acpi_object *obj;
+	struct atk_acpi_input_buf sitm;
+	struct atk_acpi_ret_buffer *ec_ret;
+	int err = 0;
+
+	sitm.id = ATK_EC_ID;
+	sitm.param1 = enable;
+	sitm.param2 = 0;
+
+	obj = atk_sitm(data, &sitm);
+	if (IS_ERR(obj)) {
+		dev_err(dev, "Failed to %sable the EC\n",
+				enable ? "en" : "dis");
+		return PTR_ERR(obj);
+	}
+	ec_ret = (struct atk_acpi_ret_buffer *)obj->buffer.pointer;
+	if (ec_ret->flags == 0) {
+		dev_err(dev, "Failed to %sable the EC\n",
+				enable ? "en" : "dis");
+		err = -EIO;
+	} else {
+		dev_info(dev, "EC %sabled\n",
+				enable ? "en" : "dis");
+	}
+
+	ACPI_FREE(obj);
+	return err;
+}
+
+static int atk_enumerate_new_hwmon(struct atk_data *data)
+{
+	struct device *dev = &data->acpi_dev->dev;
+	union acpi_object *pack;
+	int err;
+	int i;
+
+	err = atk_ec_present(data);
+	if (err < 0)
+		return err;
+	if (err) {
+		err = atk_ec_enabled(data);
+		if (err < 0)
+			return err;
+		/* If the EC was disabled we will disable it again on unload */
+		data->disable_ec = err;
+
+		err = atk_ec_ctl(data, 1);
+		if (err) {
+			data->disable_ec = false;
+			return err;
+		}
 	}
 
+	dev_dbg(dev, "Enumerating hwmon sensors\n");
+
+	pack = atk_ggrp(data, ATK_MUX_HWMON);
+	if (IS_ERR(pack))
+		return PTR_ERR(pack);
+
 	for (i = 0; i < pack->package.count; i++) {
 		union acpi_object *obj = &pack->package.elements[i];
 
@@ -758,8 +971,7 @@ static int atk_enumerate_new_hwmon(struct atk_data *data)
 
 	err = data->voltage_count + data->temperature_count + data->fan_count;
 
-out:
-	ACPI_FREE(buf.pointer);
+	ACPI_FREE(pack);
 	return err;
 }
 
@@ -895,6 +1107,15 @@ static int atk_check_new_if(struct atk_data *data)
 	}
 	data->read_handle = ret;
 
+	/* De-multiplexer (write) */
+	status = acpi_get_handle(data->atk_handle, METHOD_WRITE, &ret);
+	if (status != AE_OK) {
+		dev_dbg(dev, "method " METHOD_READ " not found: %s\n",
+				 acpi_format_exception(status));
+		return -ENODEV;
+	}
+	data->write_handle = ret;
+
 	return 0;
 }
 
@@ -915,6 +1136,7 @@ static int atk_add(struct acpi_device *device)
 	data->acpi_dev = device;
 	data->atk_handle = device->handle;
 	INIT_LIST_HEAD(&data->sensor_list);
+	data->disable_ec = false;
 
 	buf.length = ACPI_ALLOCATE_BUFFER;
 	ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL,
@@ -973,6 +1195,8 @@ static int atk_add(struct acpi_device *device)
 cleanup:
 	atk_free_sensors(data);
 out:
+	if (data->disable_ec)
+		atk_ec_ctl(data, 0);
 	kfree(data);
 	return err;
 }
@@ -988,6 +1212,11 @@ static int atk_remove(struct acpi_device *device, int type)
 	atk_free_sensors(data);
 	hwmon_device_unregister(data->hwmon_dev);
 
+	if (data->disable_ec) {
+		if (atk_ec_ctl(data, 0))
+			dev_err(&device->dev, "Failed to disable EC\n");
+	}
+
 	kfree(data);
 
 	return 0;
diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index 2c2cb1ec94c..27d62574284 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -572,7 +572,7 @@ static struct dme1737_data *dme1737_update_device(struct device *dev)
 
 	/* Sample register contents every 1 sec */
 	if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
-		if (data->type != sch5027) {
+		if (data->type == dme1737) {
 			data->vid = dme1737_read(data, DME1737_REG_VID) &
 				0x3f;
 		}
@@ -1621,9 +1621,6 @@ static struct attribute *dme1737_misc_attr[] = {
 	&sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
 	&sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
 	&sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
-	/* Misc */
-	&dev_attr_vrm.attr,
-	&dev_attr_cpu0_vid.attr,
 	NULL
 };
 
@@ -1631,6 +1628,18 @@ static const struct attribute_group dme1737_misc_group = {
 	.attrs = dme1737_misc_attr,
 };
 
+/* The following struct holds VID-related attributes. Their creation
+   depends on the chip type which is determined during module load. */
+static struct attribute *dme1737_vid_attr[] = {
+	&dev_attr_vrm.attr,
+	&dev_attr_cpu0_vid.attr,
+	NULL
+};
+
+static const struct attribute_group dme1737_vid_group = {
+	.attrs = dme1737_vid_attr,
+};
+
 /* The following structs hold the PWM attributes, some of which are optional.
  * Their creation depends on the chip configuration which is determined during
  * module load. */
@@ -1902,6 +1911,9 @@ static void dme1737_remove_files(struct device *dev)
 	if (data->type != sch5027) {
 		sysfs_remove_group(&dev->kobj, &dme1737_misc_group);
 	}
+	if (data->type == dme1737) {
+		sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
+	}
 
 	sysfs_remove_group(&dev->kobj, &dme1737_group);
 
@@ -1933,6 +1945,13 @@ static int dme1737_create_files(struct device *dev)
 		goto exit_remove;
 	}
 
+	/* Create VID-related sysfs attributes */
+	if ((data->type == dme1737) &&
+	    (err = sysfs_create_group(&dev->kobj,
+				      &dme1737_vid_group))) {
+		goto exit_remove;
+	}
+
 	/* Create fan sysfs attributes */
 	for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
 		if (data->has_fan & (1 << ix)) {
@@ -2127,7 +2146,7 @@ static int dme1737_init_device(struct device *dev)
 	data->pwm_acz[2] = 4;	/* pwm3 -> zone3 */
 
 	/* Set VRM */
-	if (data->type != sch5027) {
+	if (data->type == dme1737) {
 		data->vrm = vid_which_vrm();
 	}
 
diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c
index 2a7a85a6dc3..da1b1f9488a 100644
--- a/drivers/hwmon/fschmd.c
+++ b/drivers/hwmon/fschmd.c
@@ -819,7 +819,7 @@ static int watchdog_release(struct inode *inode, struct file *filp)
 static ssize_t watchdog_write(struct file *filp, const char __user *buf,
 	size_t count, loff_t *offset)
 {
-	size_t ret;
+	int ret;
 	struct fschmd_data *data = filp->private_data;
 
 	if (count) {
diff --git a/drivers/hwmon/hp_accel.c b/drivers/hwmon/hp_accel.c
index 6679854c85b..be475e844c2 100644
--- a/drivers/hwmon/hp_accel.c
+++ b/drivers/hwmon/hp_accel.c
@@ -197,11 +197,13 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = {
 	AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
 	AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
 	AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
-	AXIS_DMI_MATCH("NC673x", "HP Compaq 673", xy_rotated_left_usd),
+	AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
+	AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
 	AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
 	AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
 	AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
 	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
+	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
 	/* Intel-based HP Pavilion dv5 */
 	AXIS_DMI_MATCH2("HPDV5_I",
 			PRODUCT_NAME, "HP Pavilion dv5",
@@ -214,6 +216,7 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = {
 			y_inverted),
 	AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
 	AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
+	AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
 	{ NULL, }
 /* Laptop models without axis info (yet):
  * "NC6910" "HP Compaq 6910"
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index ffeb2a10e1a..a3749cb0f18 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -1028,12 +1028,11 @@ static int __init it87_find(unsigned short *address,
 		chip_type, *address, sio_data->revision);
 
 	/* Read GPIO config and VID value from LDN 7 (GPIO) */
-	if (chip_type != IT8705F_DEVID) {
+	if (sio_data->type != it87) {
 		int reg;
 
 		superio_select(GPIO);
-		if ((chip_type == it8718) ||
-		    (chip_type == it8720))
+		if (sio_data->type == it8718 || sio_data->type == it8720)
 			sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
 
 		reg = superio_inb(IT87_SIO_PINX2_REG);
diff --git a/drivers/hwmon/lis3lv02d_spi.c b/drivers/hwmon/lis3lv02d_spi.c
index ecd739534f6..82b16808a27 100644
--- a/drivers/hwmon/lis3lv02d_spi.c
+++ b/drivers/hwmon/lis3lv02d_spi.c
@@ -83,7 +83,8 @@ static int __devexit lis302dl_spi_remove(struct spi_device *spi)
 	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
 	lis3lv02d_joystick_disable();
 	lis3lv02d_poweroff(lis3);
-	return 0;
+
+	return lis3lv02d_remove_fs(&lis3_dev);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
index 303c02694c3..ebe38b680ee 100644
--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -30,6 +30,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
+#include <linux/sched.h>
 #include <linux/delay.h>
 #include <linux/jiffies.h>
 #include <linux/err.h>
@@ -622,7 +623,12 @@ static int __devexit sht15_remove(struct platform_device *pdev)
 }
 
 
-static struct platform_driver sht_drivers[] = {
+/*
+ * sht_drivers simultaneously refers to __devinit and __devexit function
+ * which causes spurious section mismatch warning. So use __refdata to
+ * get rid from this.
+ */
+static struct platform_driver __refdata sht_drivers[] = {
 	{
 		.driver = {
 			.name = "sht10",