Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Remove all i2c_set_clientdata(client, NULL) in drivers
  i2c/busses: Move two drivers to embedded section
  i2c: Rename i2c_check_addr to i2c_check_addr_busy
  i2c: Document reserved I2C addresses
  i2c: Check for address validity on client registration
  i2c: Share the I2C device presence detection code
  Documentation/i2c: Checkpatch cleanup

78 files changed, 137 insertions, 233 deletions

diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
index 4086c72..f13c843 100644
--- a/drivers/hwmon/adt7411.c
+++ b/drivers/hwmon/adt7411.c
@@ -316,7 +316,6 @@ static int __devinit adt7411_probe(struct i2c_client *client,
  exit_remove:
 	sysfs_remove_group(&client->dev.kobj, &adt7411_attr_grp);
  exit_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return ret;
 }
@@ -327,7 +326,6 @@ static int __devexit adt7411_remove(struct i2c_client *client)
 
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &adt7411_attr_grp);
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return 0;
 }
diff --git a/drivers/hwmon/asc7621.c b/drivers/hwmon/asc7621.c
index 0f388ad..3b973f3 100644
--- a/drivers/hwmon/asc7621.c
+++ b/drivers/hwmon/asc7621.c
@@ -1141,7 +1141,6 @@ exit_remove:
 				   &(asc7621_params[i].sda.dev_attr));
 	}
 
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return err;
 }
@@ -1196,7 +1195,6 @@ static int asc7621_remove(struct i2c_client *client)
 				   &(asc7621_params[i].sda.dev_attr));
 	}
 
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return 0;
 }
diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
index bad2cf3..0f58ecc 100644
--- a/drivers/hwmon/f75375s.c
+++ b/drivers/hwmon/f75375s.c
@@ -662,7 +662,6 @@ exit_remove:
 	sysfs_remove_group(&client->dev.kobj, &f75375_group);
 exit_free:
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 	return err;
 }
 
@@ -672,7 +671,6 @@ static int f75375_remove(struct i2c_client *client)
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &f75375_group);
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/hwmon/g760a.c b/drivers/hwmon/g760a.c
index 09ea12e..1f63d1a 100644
--- a/drivers/hwmon/g760a.c
+++ b/drivers/hwmon/g760a.c
@@ -236,7 +236,6 @@ error_hwmon_device_register:
 	sysfs_remove_group(&client->dev.kobj, &g760a_group);
 error_sysfs_create_group:
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 
 	return err;
 }
@@ -247,7 +246,6 @@ static int g760a_remove(struct i2c_client *client)
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &g760a_group);
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/hwmon/lm73.c b/drivers/hwmon/lm73.c
index 4d1b76b..29b9030 100644
--- a/drivers/hwmon/lm73.c
+++ b/drivers/hwmon/lm73.c
@@ -136,7 +136,6 @@ static int lm73_remove(struct i2c_client *client)
 
 	hwmon_device_unregister(hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &lm73_group);
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 5646342..393f354 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -192,7 +192,6 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
 exit_remove:
 	sysfs_remove_group(&client->dev.kobj, &lm75_group);
 exit_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return status;
 }
@@ -204,7 +203,6 @@ static int lm75_remove(struct i2c_client *client)
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &lm75_group);
 	lm75_write_value(client, LM75_REG_CONF, data->orig_conf);
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return 0;
 }
diff --git a/drivers/hwmon/lm95241.c b/drivers/hwmon/lm95241.c
index 8fc8eb8..94741d4 100644
--- a/drivers/hwmon/lm95241.c
+++ b/drivers/hwmon/lm95241.c
@@ -399,7 +399,6 @@ static int lm95241_remove(struct i2c_client *client)
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &lm95241_group);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 	return 0;
 }
diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c
index 8013895..93187c3 100644
--- a/drivers/hwmon/tmp102.c
+++ b/drivers/hwmon/tmp102.c
@@ -224,7 +224,6 @@ fail_remove_sysfs:
 fail_restore_config:
 	tmp102_write_reg(client, TMP102_CONF_REG, tmp102->config_orig);
 fail_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(tmp102);
 
 	return status;
@@ -247,7 +246,6 @@ static int __devexit tmp102_remove(struct i2c_client *client)
 					 config | TMP102_CONF_SD);
 	}
 
-	i2c_set_clientdata(client, NULL);
 	kfree(tmp102);
 
 	return 0;
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index 738c472..6b4165c 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -295,7 +295,6 @@ exit_remove:
 	sysfs_remove_group(&client->dev.kobj, &tmp421_group);
 
 exit_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return err;
@@ -308,7 +307,6 @@ static int tmp421_remove(struct i2c_client *client)
 	hwmon_device_unregister(data->hwmon_dev);
 	sysfs_remove_group(&client->dev.kobj, &tmp421_group);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return 0;
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index 32d4ade..c84b9b4 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -1197,7 +1197,6 @@ ERROR4:
 	if (data->lm75[1])
 		i2c_unregister_device(data->lm75[1]);
 ERROR3:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 ERROR1:
 	return err;
@@ -1219,7 +1218,6 @@ w83781d_remove(struct i2c_client *client)
 	if (data->lm75[1])
 		i2c_unregister_device(data->lm75[1]);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return 0;
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 87ab056..bceafbf 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -475,6 +475,26 @@ config I2C_PASEMI
 	help
 	  Supports the PA Semi PWRficient on-chip SMBus interfaces.
 
+config I2C_PCA_PLATFORM
+	tristate "PCA9564/PCA9665 as platform device"
+	select I2C_ALGOPCA
+	default n
+	help
+	  This driver supports a memory mapped Philips PCA9564/PCA9665
+	  parallel bus to I2C bus controller.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-pca-platform.
+
+config I2C_PMCMSP
+	tristate "PMC MSP I2C TWI Controller"
+	depends on PMC_MSP
+	help
+	  This driver supports the PMC TWI controller on MSP devices.
+
+	  This driver can also be built as module. If so, the module
+	  will be called i2c-pmcmsp.
+
 config I2C_PNX
 	tristate "I2C bus support for Philips PNX targets"
 	depends on ARCH_PNX4008
@@ -711,26 +731,6 @@ config I2C_PCA_ISA
 	  delays when I2C/SMBus chip drivers are loaded (e.g. at boot
 	  time).  If unsure, say N.
 
-config I2C_PCA_PLATFORM
-	tristate "PCA9564/PCA9665 as platform device"
-	select I2C_ALGOPCA
-	default n
-	help
-	  This driver supports a memory mapped Philips PCA9564/PCA9665
-	  parallel bus to I2C bus controller.
-
-	  This driver can also be built as a module.  If so, the module
-	  will be called i2c-pca-platform.
-
-config I2C_PMCMSP
-	tristate "PMC MSP I2C TWI Controller"
-	depends on PMC_MSP
-	help
-	  This driver supports the PMC TWI controller on MSP devices.
-
-	  This driver can also be built as module. If so, the module
-	  will be called i2c-pmcmsp.
-
 config I2C_SIBYTE
 	tristate "SiByte SMBus interface"
 	depends on SIBYTE_SB1xxx_SOC
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 097236f..936880b 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -27,7 +27,7 @@ obj-$(CONFIG_I2C_VIAPRO)	+= i2c-viapro.o
 obj-$(CONFIG_I2C_HYDRA)		+= i2c-hydra.o
 obj-$(CONFIG_I2C_POWERMAC)	+= i2c-powermac.o
 
-# Embebbed system I2C/SMBus host controller drivers
+# Embedded system I2C/SMBus host controller drivers
 obj-$(CONFIG_I2C_AT91)		+= i2c-at91.o
 obj-$(CONFIG_I2C_AU1550)	+= i2c-au1550.o
 obj-$(CONFIG_I2C_BLACKFIN_TWI)	+= i2c-bfin-twi.o
@@ -46,6 +46,8 @@ obj-$(CONFIG_I2C_NOMADIK)	+= i2c-nomadik.o
 obj-$(CONFIG_I2C_OCORES)	+= i2c-ocores.o
 obj-$(CONFIG_I2C_OMAP)		+= i2c-omap.o
 obj-$(CONFIG_I2C_PASEMI)	+= i2c-pasemi.o
+obj-$(CONFIG_I2C_PCA_PLATFORM)	+= i2c-pca-platform.o
+obj-$(CONFIG_I2C_PMCMSP)	+= i2c-pmcmsp.o
 obj-$(CONFIG_I2C_PNX)		+= i2c-pnx.o
 obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
 obj-$(CONFIG_I2C_S3C2410)	+= i2c-s3c2410.o
@@ -68,8 +70,6 @@ obj-$(CONFIG_I2C_TINY_USB)	+= i2c-tiny-usb.o
 obj-$(CONFIG_I2C_ACORN)		+= i2c-acorn.o
 obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor.o
 obj-$(CONFIG_I2C_PCA_ISA)	+= i2c-pca-isa.o
-obj-$(CONFIG_I2C_PCA_PLATFORM)	+= i2c-pca-platform.o
-obj-$(CONFIG_I2C_PMCMSP)	+= i2c-pmcmsp.o
 obj-$(CONFIG_I2C_SIBYTE)	+= i2c-sibyte.o
 obj-$(CONFIG_I2C_STUB)		+= i2c-stub.o
 obj-$(CONFIG_SCx200_ACB)	+= scx200_acb.o
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index e0f833c..1cca263 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -47,7 +47,6 @@ static DEFINE_MUTEX(core_lock);
 static DEFINE_IDR(i2c_adapter_idr);
 
 static struct device_type i2c_client_type;
-static int i2c_check_addr(struct i2c_adapter *adapter, int addr);
 static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver);
 
 /* ------------------------------------------------------------------------- */
@@ -371,6 +370,59 @@ struct i2c_client *i2c_verify_client(struct device *dev)
 EXPORT_SYMBOL(i2c_verify_client);
 
 
+/* This is a permissive address validity check, I2C address map constraints
+ * are purposedly not enforced, except for the general call address. */
+static int i2c_check_client_addr_validity(const struct i2c_client *client)
+{
+	if (client->flags & I2C_CLIENT_TEN) {
+		/* 10-bit address, all values are valid */
+		if (client->addr > 0x3ff)
+			return -EINVAL;
+	} else {
+		/* 7-bit address, reject the general call address */
+		if (client->addr == 0x00 || client->addr > 0x7f)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+/* And this is a strict address validity check, used when probing. If a
+ * device uses a reserved address, then it shouldn't be probed. 7-bit
+ * addressing is assumed, 10-bit address devices are rare and should be
+ * explicitly enumerated. */
+static int i2c_check_addr_validity(unsigned short addr)
+{
+	/*
+	 * Reserved addresses per I2C specification:
+	 *  0x00       General call address / START byte
+	 *  0x01       CBUS address
+	 *  0x02       Reserved for different bus format
+	 *  0x03       Reserved for future purposes
+	 *  0x04-0x07  Hs-mode master code
+	 *  0x78-0x7b  10-bit slave addressing
+	 *  0x7c-0x7f  Reserved for future purposes
+	 */
+	if (addr < 0x08 || addr > 0x77)
+		return -EINVAL;
+	return 0;
+}
+
+static int __i2c_check_addr_busy(struct device *dev, void *addrp)
+{
+	struct i2c_client	*client = i2c_verify_client(dev);
+	int			addr = *(int *)addrp;
+
+	if (client && client->addr == addr)
+		return -EBUSY;
+	return 0;
+}
+
+static int i2c_check_addr_busy(struct i2c_adapter *adapter, int addr)
+{
+	return device_for_each_child(&adapter->dev, &addr,
+				     __i2c_check_addr_busy);
+}
+
 /**
  * i2c_new_device - instantiate an i2c device
  * @adap: the adapter managing the device
@@ -410,8 +462,16 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
 
 	strlcpy(client->name, info->type, sizeof(client->name));
 
+	/* Check for address validity */
+	status = i2c_check_client_addr_validity(client);
+	if (status) {
+		dev_err(&adap->dev, "Invalid %d-bit I2C address 0x%02hx\n",
+			client->flags & I2C_CLIENT_TEN ? 10 : 7, client->addr);
+		goto out_err_silent;
+	}
+
 	/* Check for address business */
-	status = i2c_check_addr(adap, client->addr);
+	status = i2c_check_addr_busy(adap, client->addr);
 	if (status)
 		goto out_err;
 
@@ -436,6 +496,7 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
 out_err:
 	dev_err(&adap->dev, "Failed to register i2c client %s at 0x%02x "
 		"(%d)\n", client->name, client->addr, status);
+out_err_silent:
 	kfree(client);
 	return NULL;
 }
@@ -561,15 +622,9 @@ i2c_sysfs_new_device(struct device *dev, struct device_attribute *attr,
 		return -EINVAL;
 	}
 
-	if (info.addr < 0x03 || info.addr > 0x77) {
-		dev_err(dev, "%s: Invalid I2C address 0x%hx\n", "new_device",
-			info.addr);
-		return -EINVAL;
-	}
-
 	client = i2c_new_device(adap, &info);
 	if (!client)
-		return -EEXIST;
+		return -EINVAL;
 
 	/* Keep track of the added device */
 	i2c_lock_adapter(adap);
@@ -1024,21 +1079,6 @@ EXPORT_SYMBOL(i2c_del_driver);
 
 /* ------------------------------------------------------------------------- */
 
-static int __i2c_check_addr(struct device *dev, void *addrp)
-{
-	struct i2c_client	*client = i2c_verify_client(dev);
-	int			addr = *(int *)addrp;
-
-	if (client && client->addr == addr)
-		return -EBUSY;
-	return 0;
-}
-
-static int i2c_check_addr(struct i2c_adapter *adapter, int addr)
-{
-	return device_for_each_child(&adapter->dev, &addr, __i2c_check_addr);
-}
-
 /**
  * i2c_use_client - increments the reference count of the i2c client structure
  * @client: the client being referenced
@@ -1277,6 +1317,41 @@ EXPORT_SYMBOL(i2c_master_recv);
  * ----------------------------------------------------
  */
 
+/*
+ * Legacy default probe function, mostly relevant for SMBus. The default
+ * probe method is a quick write, but it is known to corrupt the 24RF08
+ * EEPROMs due to a state machine bug, and could also irreversibly
+ * write-protect some EEPROMs, so for address ranges 0x30-0x37 and 0x50-0x5f,
+ * we use a short byte read instead. Also, some bus drivers don't implement
+ * quick write, so we fallback to a byte read in that case too.
+ * On x86, there is another special case for FSC hardware monitoring chips,
+ * which want regular byte reads (address 0x73.) Fortunately, these are the
+ * only known chips using this I2C address on PC hardware.
+ * Returns 1 if probe succeeded, 0 if not.
+ */
+static int i2c_default_probe(struct i2c_adapter *adap, unsigned short addr)
+{
+	int err;
+	union i2c_smbus_data dummy;
+
+#ifdef CONFIG_X86
+	if (addr == 0x73 && (adap->class & I2C_CLASS_HWMON)
+	 && i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE_DATA))
+		err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0,
+				     I2C_SMBUS_BYTE_DATA, &dummy);
+	else
+#endif
+	if ((addr & ~0x07) == 0x30 || (addr & ~0x0f) == 0x50
+	 || !i2c_check_functionality(adap, I2C_FUNC_SMBUS_QUICK))
+		err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0,
+				     I2C_SMBUS_BYTE, &dummy);
+	else
+		err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_WRITE, 0,
+				     I2C_SMBUS_QUICK, NULL);
+
+	return err >= 0;
+}
+
 static int i2c_detect_address(struct i2c_client *temp_client,
 			      struct i2c_driver *driver)
 {
@@ -1286,34 +1361,20 @@ static int i2c_detect_address(struct i2c_client *temp_client,
 	int err;
 
 	/* Make sure the address is valid */
-	if (addr < 0x03 || addr > 0x77) {
+	err = i2c_check_addr_validity(addr);
+	if (err) {
 		dev_warn(&adapter->dev, "Invalid probe address 0x%02x\n",
 			 addr);
-		return -EINVAL;
+		return err;
 	}
 
 	/* Skip if already in use */
-	if (i2c_check_addr(adapter, addr))
+	if (i2c_check_addr_busy(adapter, addr))
 		return 0;
 
 	/* Make sure there is something at this address */
-	if (addr == 0x73 && (adapter->class & I2C_CLASS_HWMON)) {
-		/* Special probe for FSC hwmon chips */
-		union i2c_smbus_data dummy;
-
-		if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_READ, 0,
-				   I2C_SMBUS_BYTE_DATA, &dummy) < 0)
-			return 0;
-	} else {
-		if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
-				   I2C_SMBUS_QUICK, NULL) < 0)
-			return 0;
-
-		/* Prevent 24RF08 corruption */
-		if ((addr & ~0x0f) == 0x50)
-			i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
-				       I2C_SMBUS_QUICK, NULL);
-	}
+	if (!i2c_default_probe(adapter, addr))
+		return 0;
 
 	/* Finally call the custom detection function */
 	memset(&info, 0, sizeof(struct i2c_board_info));
@@ -1407,42 +1468,22 @@ i2c_new_probed_device(struct i2c_adapter *adap,
 
 	for (i = 0; addr_list[i] != I2C_CLIENT_END; i++) {
 		/* Check address validity */
-		if (addr_list[i] < 0x03 || addr_list[i] > 0x77) {
+		if (i2c_check_addr_validity(addr_list[i]) < 0) {
 			dev_warn(&adap->dev, "Invalid 7-bit address "
 				 "0x%02x\n", addr_list[i]);
 			continue;
 		}
 
 		/* Check address availability */
-		if (i2c_check_addr(adap, addr_list[i])) {
+		if (i2c_check_addr_busy(adap, addr_list[i])) {
 			dev_dbg(&adap->dev, "Address 0x%02x already in "
 				"use, not probing\n", addr_list[i]);
 			continue;
 		}
 
-		/* Test address responsiveness
-		   The default probe method is a quick write, but it is known
-		   to corrupt the 24RF08 EEPROMs due to a state machine bug,
-		   and could also irreversibly write-protect some EEPROMs, so
-		   for address ranges 0x30-0x37 and 0x50-0x5f, we use a byte
-		   read instead. Also, some bus drivers don't implement
-		   quick write, so we fallback to a byte read it that case
-		   too. */
-		if ((addr_list[i] & ~0x07) == 0x30
-		 || (addr_list[i] & ~0x0f) == 0x50
-		 || !i2c_check_functionality(adap, I2C_FUNC_SMBUS_QUICK)) {
-			union i2c_smbus_data data;
-
-			if (i2c_smbus_xfer(adap, addr_list[i], 0,
-					   I2C_SMBUS_READ, 0,
-					   I2C_SMBUS_BYTE, &data) >= 0)
-				break;
-		} else {
-			if (i2c_smbus_xfer(adap, addr_list[i], 0,
-					   I2C_SMBUS_WRITE, 0,
-					   I2C_SMBUS_QUICK, NULL) >= 0)
-				break;
-		}
+		/* Test address responsiveness */
+		if (i2c_default_probe(adap, addr_list[i]))
+			break;
 	}
 
 	if (addr_list[i] == I2C_CLIENT_END) {
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index a24e0bf..f61ccc1 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -173,7 +173,6 @@ static int smbalert_remove(struct i2c_client *ara)
 
 	cancel_work_sync(&alert->alert);
 
-	i2c_set_clientdata(ara, NULL);
 	kfree(alert);
 	return 0;
 }
diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 4771ab1..744600e 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -287,7 +287,6 @@ static int __devexit adp5588_remove(struct i2c_client *client)
 	free_irq(client->irq, kpad);
 	cancel_delayed_work_sync(&kpad->work);
 	input_unregister_device(kpad->input);
-	i2c_set_clientdata(client, NULL);
 	kfree(kpad);
 
 	return 0;
diff --git a/drivers/input/keyboard/lm8323.c b/drivers/input/keyboard/lm8323.c
index bc69693..40b032f 100644
--- a/drivers/input/keyboard/lm8323.c
+++ b/drivers/input/keyboard/lm8323.c
@@ -778,8 +778,6 @@ static int __devexit lm8323_remove(struct i2c_client *client)
 	struct lm8323_chip *lm = i2c_get_clientdata(client);
 	int i;
 
-	i2c_set_clientdata(client, NULL);
-
 	disable_irq_wake(client->irq);
 	free_irq(client->irq, lm);
 	cancel_work_sync(&lm->work);
diff --git a/drivers/input/keyboard/max7359_keypad.c b/drivers/input/keyboard/max7359_keypad.c
index 7fc8185..9091ff5 100644
--- a/drivers/input/keyboard/max7359_keypad.c
+++ b/drivers/input/keyboard/max7359_keypad.c
@@ -265,7 +265,6 @@ static int __devexit max7359_remove(struct i2c_client *client)
 
 	free_irq(client->irq, keypad);
 	input_unregister_device(keypad->input_dev);
-	i2c_set_clientdata(client, NULL);
 	kfree(keypad);
 
 	return 0;
diff --git a/drivers/input/keyboard/qt2160.c b/drivers/input/keyboard/qt2160.c
index 31f3008..fac6951 100644
--- a/drivers/input/keyboard/qt2160.c
+++ b/drivers/input/keyboard/qt2160.c
@@ -358,7 +358,6 @@ static int __devexit qt2160_remove(struct i2c_client *client)
 	input_unregister_device(qt2160->input);
 	kfree(qt2160);
 
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/input/keyboard/tca6416-keypad.c b/drivers/input/keyboard/tca6416-keypad.c
index 493c93f..00137be 100644
--- a/drivers/input/keyboard/tca6416-keypad.c
+++ b/drivers/input/keyboard/tca6416-keypad.c
@@ -316,8 +316,6 @@ static int __devexit tca6416_keypad_remove(struct i2c_client *client)
 	input_unregister_device(chip->input);
 	kfree(chip);
 
-	i2c_set_clientdata(client, NULL);
-
 	return 0;
 }
 
diff --git a/drivers/input/misc/ad714x-i2c.c b/drivers/input/misc/ad714x-i2c.c
index e9adbe4..2bef8fa 100644
--- a/drivers/input/misc/ad714x-i2c.c
+++ b/drivers/input/misc/ad714x-i2c.c
@@ -97,7 +97,6 @@ static int __devexit ad714x_i2c_remove(struct i2c_client *client)
 	struct ad714x_chip *chip = i2c_get_clientdata(client);
 
 	ad714x_remove(chip);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/input/misc/pcf8574_keypad.c b/drivers/input/misc/pcf8574_keypad.c
index 5c3ac4e..0ac47d2 100644
--- a/drivers/input/misc/pcf8574_keypad.c
+++ b/drivers/input/misc/pcf8574_keypad.c
@@ -168,8 +168,6 @@ static int __devexit pcf8574_kp_remove(struct i2c_client *client)
 	input_unregister_device(lp->idev);
 	kfree(lp);
 
-	i2c_set_clientdata(client, NULL);
-
 	return 0;
 }
 
diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c
index 8291e73..0ae62f0 100644
--- a/drivers/input/mouse/synaptics_i2c.c
+++ b/drivers/input/mouse/synaptics_i2c.c
@@ -613,7 +613,6 @@ static int __devexit synaptics_i2c_remove(struct i2c_client *client)
 		free_irq(client->irq, touch);
 
 	input_unregister_device(touch->input);
-	i2c_set_clientdata(client, NULL);
 	kfree(touch);
 
 	return 0;
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index 794d070..4b32fb4 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -812,10 +812,8 @@ static int __devinit ad7879_probe(struct i2c_client *client,
 	ts->bus = client;
 
 	error = ad7879_construct(client, ts);
-	if (error) {
-		i2c_set_clientdata(client, NULL);
+	if (error)
 		kfree(ts);
-	}
 
 	return error;
 }
@@ -825,7 +823,6 @@ static int __devexit ad7879_remove(struct i2c_client *client)
 	struct ad7879 *ts = dev_get_drvdata(&client->dev);
 
 	ad7879_destroy(client, ts);
-	i2c_set_clientdata(client, NULL);
 	kfree(ts);
 
 	return 0;
diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c
index 75f8b73..7a3a916 100644
--- a/drivers/input/touchscreen/eeti_ts.c
+++ b/drivers/input/touchscreen/eeti_ts.c
@@ -238,7 +238,6 @@ err2:
 	input = NULL; /* so we dont try to free it below */
 err1:
 	input_free_device(input);
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 err0:
 	return err;
@@ -256,7 +255,6 @@ static int __devexit eeti_ts_remove(struct i2c_client *client)
 	enable_irq(priv->irq);
 
 	input_unregister_device(priv->input);
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 
 	return 0;
diff --git a/drivers/input/touchscreen/mcs5000_ts.c b/drivers/input/touchscreen/mcs5000_ts.c
index ce8ab02..1fb0c2f 100644
--- a/drivers/input/touchscreen/mcs5000_ts.c
+++ b/drivers/input/touchscreen/mcs5000_ts.c
@@ -256,7 +256,6 @@ static int __devexit mcs5000_ts_remove(struct i2c_client *client)
 	free_irq(client->irq, data);
 	input_unregister_device(data->input_dev);
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index 769b479..be23780 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -347,8 +347,6 @@ static int __devexit tsc2007_remove(struct i2c_client *client)
 	struct tsc2007	*ts = i2c_get_clientdata(client);
 	struct tsc2007_platform_data *pdata = client->dev.platform_data;
 
-	i2c_set_clientdata(client, NULL);
-
 	tsc2007_free_irq(ts);
 
 	if (pdata->exit_platform_hw)
diff --git a/drivers/leds/leds-bd2802.c b/drivers/leds/leds-bd2802.c
index 286b501..5dcdf9d 100644
--- a/drivers/leds/leds-bd2802.c
+++ b/drivers/leds/leds-bd2802.c
@@ -742,7 +742,6 @@ failed_unregister_dev_file:
 	for (i--; i >= 0; i--)
 		device_remove_file(&led->client->dev, bd2802_attributes[i]);
 failed_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(led);
 
 	return ret;
@@ -759,7 +758,6 @@ static int __exit bd2802_remove(struct i2c_client *client)
 		bd2802_disable_adv_conf(led);
 	for (i = 0; i < ARRAY_SIZE(bd2802_attributes); i++)
 		device_remove_file(&led->client->dev, bd2802_attributes[i]);
-	i2c_set_clientdata(client, NULL);
 	kfree(led);
 
 	return 0;
diff --git a/drivers/leds/leds-lp3944.c b/drivers/leds/leds-lp3944.c
index 932a58d..9010c05 100644
--- a/drivers/leds/leds-lp3944.c
+++ b/drivers/leds/leds-lp3944.c
@@ -432,7 +432,6 @@ static int __devexit lp3944_remove(struct i2c_client *client)
 		}
 
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c
index 6682175..43d0875 100644
--- a/drivers/leds/leds-pca9532.c
+++ b/drivers/leds/leds-pca9532.c
@@ -320,10 +320,8 @@ static int pca9532_probe(struct i2c_client *client,
 	mutex_init(&data->update_lock);
 
 	err = pca9532_configure(client, data, pca9532_pdata);
-	if (err) {
+	if (err)
 		kfree(data);
-		i2c_set_clientdata(client, NULL);
-	}
 
 	return err;
 }
@@ -351,7 +349,6 @@ static int pca9532_remove(struct i2c_client *client)
 		}
 
 	kfree(data);
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 8ff50f2..66aa3e8 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -342,7 +342,6 @@ exit:
 	}
 
 	kfree(pca955x);
-	i2c_set_clientdata(client, NULL);
 
 	return err;
 }
@@ -358,7 +357,6 @@ static int __devexit pca955x_remove(struct i2c_client *client)
 	}
 
 	kfree(pca955x);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index 16d82f1..c42eeb4 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -182,7 +182,6 @@ remove_thermostat(struct i2c_client *client)
 
 	thermostat = NULL;
 
-	i2c_set_clientdata(client, NULL);
 	kfree(th);
 
 	return 0;
@@ -400,7 +399,6 @@ static int probe_thermostat(struct i2c_client *client,
 	rc = read_reg(th, CONFIG_REG);
 	if (rc < 0) {
 		dev_err(&client->dev, "Thermostat failed to read config!\n");
-		i2c_set_clientdata(client, NULL);
 		kfree(th);
 		return -ENODEV;
 	}
diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c
index d8257d3..647c6ad 100644
--- a/drivers/macintosh/windfarm_lm75_sensor.c
+++ b/drivers/macintosh/windfarm_lm75_sensor.c
@@ -107,10 +107,8 @@ static int wf_lm75_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, lm);
 
 	rc = wf_register_sensor(&lm->sens);
-	if (rc) {
-		i2c_set_clientdata(client, NULL);
+	if (rc)
 		kfree(lm);
-	}
 
 	return rc;
 }
@@ -216,7 +214,6 @@ static int wf_lm75_remove(struct i2c_client *client)
 	/* release sensor */
 	wf_unregister_sensor(&lm->sens);
 
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/macintosh/windfarm_max6690_sensor.c b/drivers/macintosh/windfarm_max6690_sensor.c
index b486eb9..8204113 100644
--- a/drivers/macintosh/windfarm_max6690_sensor.c
+++ b/drivers/macintosh/windfarm_max6690_sensor.c
@@ -81,7 +81,6 @@ static int wf_max6690_probe(struct i2c_client *client,
 
 	rc = wf_register_sensor(&max->sens);
 	if (rc) {
-		i2c_set_clientdata(client, NULL);
 		kfree(max);
 	}
 
diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c
index e20330a..65a8ff3 100644
--- a/drivers/macintosh/windfarm_smu_sat.c
+++ b/drivers/macintosh/windfarm_smu_sat.c
@@ -376,7 +376,6 @@ static int wf_sat_remove(struct i2c_client *client)
 	/* XXX TODO */
 
 	sat->i2c = NULL;
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c
index a5844d0..67a4ec8 100644
--- a/drivers/media/radio/si470x/radio-si470x-i2c.c
+++ b/drivers/media/radio/si470x/radio-si470x-i2c.c
@@ -482,7 +482,6 @@ static __devexit int si470x_i2c_remove(struct i2c_client *client)
 	cancel_work_sync(&radio->radio_work);
 	video_unregister_device(radio->videodev);
 	kfree(radio);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index b62c0bd..e3b9a8a 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -785,7 +785,6 @@ static int mt9m001_probe(struct i2c_client *client,
 	ret = mt9m001_video_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(mt9m001);
 	}
 
@@ -799,7 +798,6 @@ static int mt9m001_remove(struct i2c_client *client)
 
 	icd->ops = NULL;
 	mt9m001_video_remove(icd);
-	i2c_set_clientdata(client, NULL);
 	client->driver = NULL;
 	kfree(mt9m001);
 
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index d35f536..e42162c 100644
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -1068,7 +1068,6 @@ static int mt9m111_probe(struct i2c_client *client,
 	ret = mt9m111_video_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(mt9m111);
 	}
 
@@ -1081,7 +1080,6 @@ static int mt9m111_remove(struct i2c_client *client)
 	struct soc_camera_device *icd = client->dev.platform_data;
 
 	icd->ops = NULL;
-	i2c_set_clientdata(client, NULL);
 	client->driver = NULL;
 	kfree(mt9m111);
 
diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 78b4e09..9f5ff25 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -883,7 +883,6 @@ static int mt9t031_probe(struct i2c_client *client,
 	if (ret) {
 		if (icd)
 			icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(mt9t031);
 	}
 
@@ -897,7 +896,6 @@ static int mt9t031_remove(struct i2c_client *client)
 
 	if (icd)
 		icd->ops = NULL;
-	i2c_set_clientdata(client, NULL);
 	client->driver = NULL;
 	kfree(mt9t031);
 
diff --git a/drivers/media/video/mt9t112.c b/drivers/media/video/mt9t112.c
index 7438f8d..aa4fce9 100644
--- a/drivers/media/video/mt9t112.c
+++ b/drivers/media/video/mt9t112.c
@@ -1119,7 +1119,6 @@ static int mt9t112_probe(struct i2c_client *client,
 	ret = mt9t112_camera_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(priv);
 	}
 
@@ -1132,7 +1131,6 @@ static int mt9t112_remove(struct i2c_client *client)
 	struct soc_camera_device *icd = client->dev.platform_data;
 
 	icd->ops = NULL;
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 	return 0;
 }
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index e5bae4c..fb44ff0 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -920,7 +920,6 @@ static int mt9v022_probe(struct i2c_client *client,
 	ret = mt9v022_video_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(mt9v022);
 	}
 
@@ -934,7 +933,6 @@ static int mt9v022_remove(struct i2c_client *client)
 
 	icd->ops = NULL;
 	mt9v022_video_remove(icd);
-	i2c_set_clientdata(client, NULL);
 	client->driver = NULL;
 	kfree(mt9v022);
 
diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
index 7f8ece3..c33acc9 100644
--- a/drivers/media/video/ov772x.c
+++ b/drivers/media/video/ov772x.c
@@ -1159,7 +1159,6 @@ static int ov772x_probe(struct i2c_client *client,
 	ret = ov772x_video_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(priv);
 	}
 
@@ -1172,7 +1171,6 @@ static int ov772x_remove(struct i2c_client *client)
 	struct soc_camera_device *icd = client->dev.platform_data;
 
 	icd->ops = NULL;
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 	return 0;
 }
diff --git a/drivers/media/video/ov9640.c b/drivers/media/video/ov9640.c
index 36599a6..035e9ec 100644
--- a/drivers/media/video/ov9640.c
+++ b/drivers/media/video/ov9640.c
@@ -783,7 +783,6 @@ static int ov9640_probe(struct i2c_client *client,
 
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(priv);
 	}
 
@@ -794,7 +793,6 @@ static int ov9640_remove(struct i2c_client *client)
 {
 	struct ov9640_priv *priv = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 	return 0;
 }
diff --git a/drivers/media/video/rj54n1cb0c.c b/drivers/media/video/rj54n1cb0c.c
index bbd9c11..2c3b58c 100644
--- a/drivers/media/video/rj54n1cb0c.c
+++ b/drivers/media/video/rj54n1cb0c.c
@@ -1444,7 +1444,6 @@ static int rj54n1_probe(struct i2c_client *client,
 	ret = rj54n1_video_probe(icd, client, rj54n1_priv);
 	if (ret < 0) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(rj54n1);
 		return ret;
 	}
@@ -1461,7 +1460,6 @@ static int rj54n1_remove(struct i2c_client *client)
 	icd->ops = NULL;
 	if (icl->free_bus)
 		icl->free_bus(icl);
-	i2c_set_clientdata(client, NULL);
 	client->driver = NULL;
 	kfree(rj54n1);
 
diff --git a/drivers/media/video/tcm825x.c b/drivers/media/video/tcm825x.c
index b90e9da..54681a5 100644
--- a/drivers/media/video/tcm825x.c
+++ b/drivers/media/video/tcm825x.c
@@ -850,7 +850,6 @@ static int tcm825x_probe(struct i2c_client *client,
 			 const struct i2c_device_id *did)
 {
 	struct tcm825x_sensor *sensor = &tcm825x;
-	int rval;
 
 	if (i2c_get_clientdata(client))
 		return -EBUSY;
@@ -871,11 +870,7 @@ static int tcm825x_probe(struct i2c_client *client,
 	sensor->pix.height = tcm825x_sizes[QVGA].height;
 	sensor->pix.pixelformat = V4L2_PIX_FMT_RGB565;
 
-	rval = v4l2_int_device_register(sensor->v4l2_int_device);
-	if (rval)
-		i2c_set_clientdata(client, NULL);
-
-	return rval;
+	return v4l2_int_device_register(sensor->v4l2_int_device);
 }
 
 static int tcm825x_remove(struct i2c_client *client)
@@ -886,7 +881,6 @@ static int tcm825x_remove(struct i2c_client *client)
 		return -ENODEV;	/* our client isn't attached */
 
 	v4l2_int_device_unregister(sensor->v4l2_int_device);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c
index 76be733..6eb3395 100644
--- a/drivers/media/video/tw9910.c
+++ b/drivers/media/video/tw9910.c
@@ -977,7 +977,6 @@ static int tw9910_probe(struct i2c_client *client,
 	ret = tw9910_video_probe(icd, client);
 	if (ret) {
 		icd->ops = NULL;
-		i2c_set_clientdata(client, NULL);
 		kfree(priv);
 	}
 
@@ -990,7 +989,6 @@ static int tw9910_remove(struct i2c_client *client)
 	struct soc_camera_device *icd = client->dev.platform_data;
 
 	icd->ops = NULL;
-	i2c_set_clientdata(client, NULL);
 	kfree(priv);
 	return 0;
 }
diff --git a/drivers/mfd/88pm860x-i2c.c b/drivers/mfd/88pm860x-i2c.c
index c933b64..bc02e6b 100644
--- a/drivers/mfd/88pm860x-i2c.c
+++ b/drivers/mfd/88pm860x-i2c.c
@@ -200,8 +200,6 @@ static int __devexit pm860x_remove(struct i2c_client *client)
 
 	pm860x_device_exit(chip);
 	i2c_unregister_device(chip->companion);
-	i2c_set_clientdata(chip->client, NULL);
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index 53ebfee..66379b4 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -957,7 +957,6 @@ static int __init ab3100_probe(struct i2c_client *client,
 	i2c_unregister_device(ab3100->testreg_client);
  exit_no_testreg_client:
  exit_no_detect:
-	i2c_set_clientdata(client, NULL);
 	kfree(ab3100);
 	return err;
 }
@@ -979,7 +978,6 @@ static int __exit ab3100_remove(struct i2c_client *client)
 	 * their notifiers so deactivate IRQ
 	 */
 	free_irq(client->irq, ab3100);
-	i2c_set_clientdata(client, NULL);
 	kfree(ab3100);
 	return 0;
 }
diff --git a/drivers/mfd/ab3550-core.c b/drivers/mfd/ab3550-core.c
index 1060f8e..f54ab62 100644
--- a/drivers/mfd/ab3550-core.c
+++ b/drivers/mfd/ab3550-core.c
@@ -1362,7 +1362,6 @@ static int __exit ab3550_remove(struct i2c_client *client)
 	 * their notifiers so deactivate IRQ
 	 */
 	free_irq(client->irq, ab);
-	i2c_set_clientdata(client, NULL);
 	kfree(ab);
 	return 0;
 }
diff --git a/drivers/mfd/adp5520.c b/drivers/mfd/adp5520.c
index 0055328..3122139 100644
--- a/drivers/mfd/adp5520.c
+++ b/drivers/mfd/adp5520.c
@@ -302,7 +302,6 @@ out_free_irq:
 		free_irq(chip->irq, chip);
 
 out_free_chip:
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 
 	return ret;
@@ -317,7 +316,6 @@ static int __devexit adp5520_remove(struct i2c_client *client)
 
 	adp5520_remove_subdevs(chip);
 	adp5520_write(chip->dev, ADP5520_MODE_STATUS, 0);
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/mfd/da903x.c b/drivers/mfd/da903x.c
index 3ad915d..c07aece 100644
--- a/drivers/mfd/da903x.c
+++ b/drivers/mfd/da903x.c
@@ -534,7 +534,6 @@ static int __devinit da903x_probe(struct i2c_client *client,
 out_free_irq:
 	free_irq(client->irq, chip);
 out_free_chip:
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return ret;
 }
@@ -544,7 +543,6 @@ static int __devexit da903x_remove(struct i2c_client *client)
 	struct da903x_chip *chip = i2c_get_clientdata(client);
 
 	da903x_remove_subdevs(chip);
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
index e73f3f5..0219115 100644
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -173,7 +173,6 @@ static int __devexit max8925_remove(struct i2c_client *client)
 	max8925_device_exit(chip);
 	i2c_unregister_device(chip->adc);
 	i2c_unregister_device(chip->rtc);
-	i2c_set_clientdata(chip->i2c, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c
index 721948b..a3fb4bc 100644
--- a/drivers/mfd/menelaus.c
+++ b/drivers/mfd/menelaus.c
@@ -1228,7 +1228,6 @@ fail2:
 	free_irq(client->irq, menelaus);
 	flush_scheduled_work();
 fail1:
-	i2c_set_clientdata(client, NULL);
 	kfree(menelaus);
 	return err;
 }
@@ -1238,7 +1237,6 @@ static int __exit menelaus_remove(struct i2c_client *client)
 	struct menelaus_chip	*menelaus = i2c_get_clientdata(client);
 
 	free_irq(client->irq, menelaus);
-	i2c_set_clientdata(client, NULL);
 	kfree(menelaus);
 	the_menelaus = NULL;
 	return 0;
diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
index 704736e..23e5855 100644
--- a/drivers/mfd/pcf50633-core.c
+++ b/drivers/mfd/pcf50633-core.c
@@ -336,7 +336,6 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
 	return 0;
 
 err_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(pcf);
 
 	return ret;
@@ -357,7 +356,6 @@ static int __devexit pcf50633_remove(struct i2c_client *client)
 	for (i = 0; i < PCF50633_NUM_REGULATORS; i++)
 		platform_device_unregister(pcf->regulator_pdev[i]);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(pcf);
 
 	return 0;
diff --git a/drivers/mfd/tc35892.c b/drivers/mfd/tc35892.c
index 715f095..e619e2a 100644
--- a/drivers/mfd/tc35892.c
+++ b/drivers/mfd/tc35892.c
@@ -296,7 +296,6 @@ out_freeirq:
 out_removeirq:
 	tc35892_irq_remove(tc35892);
 out_free:
-	i2c_set_clientdata(i2c, NULL);
 	kfree(tc35892);
 	return ret;
 }
@@ -310,7 +309,6 @@ static int __devexit tc35892_remove(struct i2c_client *client)
 	free_irq(tc35892->i2c->irq, tc35892);
 	tc35892_irq_remove(tc35892);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(tc35892);
 
 	return 0;
diff --git a/drivers/mfd/tps65010.c b/drivers/mfd/tps65010.c
index 9b22a77..d0016b6 100644
--- a/drivers/mfd/tps65010.c
+++ b/drivers/mfd/tps65010.c
@@ -530,7 +530,6 @@ static int __exit tps65010_remove(struct i2c_client *client)
 	cancel_delayed_work(&tps->work);
 	flush_scheduled_work();
 	debugfs_remove(tps->file);
-	i2c_set_clientdata(client, NULL);
 	kfree(tps);
 	the_tps = NULL;
 	return 0;
diff --git a/drivers/mfd/wm8350-i2c.c b/drivers/mfd/wm8350-i2c.c
index 7795af4..5fe5de1 100644
--- a/drivers/mfd/wm8350-i2c.c
+++ b/drivers/mfd/wm8350-i2c.c
@@ -80,7 +80,6 @@ static int wm8350_i2c_probe(struct i2c_client *i2c,
 	return ret;
 
 err:
-	i2c_set_clientdata(i2c, NULL);
 	kfree(wm8350);
 	return ret;
 }
@@ -90,7 +89,6 @@ static int wm8350_i2c_remove(struct i2c_client *i2c)
 	struct wm8350 *wm8350 = i2c_get_clientdata(i2c);
 
 	wm8350_device_exit(wm8350);
-	i2c_set_clientdata(i2c, NULL);
 	kfree(wm8350);
 
 	return 0;
diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index e08aafa..1bfef48 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -415,7 +415,6 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
 	return 0;
 
 struct_err:
-	i2c_set_clientdata(i2c, NULL);
 	kfree(wm8400);
 err:
 	return ret;
@@ -426,7 +425,6 @@ static int wm8400_i2c_remove(struct i2c_client *i2c)
 	struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
 
 	wm8400_release(wm8400);
-	i2c_set_clientdata(i2c, NULL);
 	kfree(wm8400);
 
 	return 0;
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index f7ca3a4..559b0b3 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -643,7 +643,6 @@ static int __devexit at24_remove(struct i2c_client *client)
 
 	kfree(at24->writebuf);
 	kfree(at24);
-	i2c_set_clientdata(client, NULL);
 	return 0;
 }
 
diff --git a/drivers/mtd/maps/pismo.c b/drivers/mtd/maps/pismo.c
index eb476b7..f4ce273 100644
--- a/drivers/mtd/maps/pismo.c
+++ b/drivers/mtd/maps/pismo.c
@@ -234,7 +234,6 @@ static int __devexit pismo_remove(struct i2c_client *client)
 	/* FIXME: set_vpp needs saner arguments */
 	pismo_setvpp_remove_fix(pismo);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(pismo);
 
 	return 0;
@@ -286,7 +285,6 @@ static int __devinit pismo_probe(struct i2c_client *client,
 	return 0;
 
  exit_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(pismo);
 	return ret;
 }
diff --git a/drivers/power/max17040_battery.c b/drivers/power/max17040_battery.c
index f3e22c9..2f2f9a6 100644
--- a/drivers/power/max17040_battery.c
+++ b/drivers/power/max17040_battery.c
@@ -225,7 +225,6 @@ static int __devinit max17040_probe(struct i2c_client *client,
 	ret = power_supply_register(&client->dev, &chip->battery);
 	if (ret) {
 		dev_err(&client->dev, "failed: power supply register\n");
-		i2c_set_clientdata(client, NULL);
 		kfree(chip);
 		return ret;
 	}
@@ -245,7 +244,6 @@ static int __devexit max17040_remove(struct i2c_client *client)
 
 	power_supply_unregister(&chip->battery);
 	cancel_delayed_work(&chip->work);
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index 671a7d1..8ae3732 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -519,8 +519,6 @@ static int __devexit lp3971_i2c_remove(struct i2c_client *i2c)
 	struct lp3971 *lp3971 = i2c_get_clientdata(i2c);
 	int i;
 
-	i2c_set_clientdata(i2c, NULL);
-
 	for (i = 0; i < lp3971->num_regulators; i++)
 		regulator_unregister(lp3971->rdev[i]);
 
diff --git a/drivers/regulator/max1586.c b/drivers/regulator/max1586.c
index b3c1afc..2b54d9d 100644
--- a/drivers/regulator/max1586.c
+++ b/drivers/regulator/max1586.c
@@ -244,7 +244,6 @@ static int __devexit max1586_pmic_remove(struct i2c_client *client)
 	for (i = 0; i <= MAX1586_V6; i++)
 		if (rdev[i])
 			regulator_unregister(rdev[i]);
-	i2c_set_clientdata(client, NULL);
 	kfree(rdev);
 
 	return 0;
diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c
index bfc4c5f..4520ace 100644
--- a/drivers/regulator/max8649.c
+++ b/drivers/regulator/max8649.c
@@ -357,7 +357,6 @@ static int __devinit max8649_regulator_probe(struct i2c_client *client,
 	dev_info(info->dev, "Max8649 regulator device is detected.\n");
 	return 0;
 out:
-	i2c_set_clientdata(client, NULL);
 	kfree(info);
 	return ret;
 }
@@ -369,7 +368,6 @@ static int __devexit max8649_regulator_remove(struct i2c_client *client)
 	if (info) {
 		if (info->regulator)
 			regulator_unregister(info->regulator);
-		i2c_set_clientdata(client, NULL);
 		kfree(info);
 	}
 
diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c
index 3790b21..d97220e 100644
--- a/drivers/regulator/max8660.c
+++ b/drivers/regulator/max8660.c
@@ -471,7 +471,6 @@ static int __devexit max8660_remove(struct i2c_client *client)
 	for (i = 0; i < MAX8660_V_END; i++)
 		if (rdev[i])
 			regulator_unregister(rdev[i]);
-	i2c_set_clientdata(client, NULL);
 	kfree(rdev);
 
 	return 0;
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index 8e2f209..f50afc9 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -538,9 +538,6 @@ static int __devexit tps_65023_remove(struct i2c_client *client)
 	struct tps_pmic *tps = i2c_get_clientdata(client);
 	int i;
 
-	/* clear the client data in i2c */
-	i2c_set_clientdata(client, NULL);
-
 	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
 		regulator_unregister(tps->rdev[i]);
 
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 6194573..1f0007f 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -403,7 +403,6 @@ out_irq:
 		free_irq(client->irq, client);
 
 out_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(ds1374);
 	return ret;
 }
@@ -422,7 +421,6 @@ static int __devexit ds1374_remove(struct i2c_client *client)
 	}
 
 	rtc_device_unregister(ds1374->rtc);
-	i2c_set_clientdata(client, NULL);
 	kfree(ds1374);
 	return 0;
 }
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index b65c82f..789f62f 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -632,7 +632,6 @@ errout_reg:
 	rtc_device_unregister(rx8025->rtc);
 
 errout_free:
-	i2c_set_clientdata(client, NULL);
 	kfree(rx8025);
 
 errout:
@@ -656,7 +655,6 @@ static int __devexit rx8025_remove(struct i2c_client *client)
 
 	rx8025_sysfs_unregister(&client->dev);
 	rtc_device_unregister(rx8025->rtc);
-	i2c_set_clientdata(client, NULL);
 	kfree(rx8025);
 	return 0;
 }
diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c
index def4d39..f789e00 100644
--- a/drivers/rtc/rtc-s35390a.c
+++ b/drivers/rtc/rtc-s35390a.c
@@ -275,7 +275,6 @@ exit_dummy:
 		if (s35390a->client[i])
 			i2c_unregister_device(s35390a->client[i]);
 	kfree(s35390a);
-	i2c_set_clientdata(client, NULL);
 
 exit:
 	return err;
@@ -292,7 +291,6 @@ static int s35390a_remove(struct i2c_client *client)
 
 	rtc_device_unregister(s35390a->rtc);
 	kfree(s35390a);
-	i2c_set_clientdata(client, NULL);
 
 	return 0;
 }
diff --git a/drivers/staging/dream/synaptics_i2c_rmi.c b/drivers/staging/dream/synaptics_i2c_rmi.c
index 1f020da..3320359 100644
--- a/drivers/staging/dream/synaptics_i2c_rmi.c
+++ b/drivers/staging/dream/synaptics_i2c_rmi.c
@@ -519,7 +519,6 @@ err_input_register_device_failed:
 err_input_dev_alloc_failed:
 err_detect_failed:
 err_power_failed:
-	i2c_set_clientdata(client, NULL);
 	kfree(ts);
 err_alloc_data_failed:
 err_check_functionality_failed:
@@ -537,7 +536,6 @@ static int synaptics_ts_remove(struct i2c_client *client)
 	else
 		hrtimer_cancel(&ts->timer);
 	input_unregister_device(ts->input_dev);
-	i2c_set_clientdata(client, NULL);
 	kfree(ts);
 	return 0;
 }
diff --git a/drivers/staging/go7007/wis-saa7113.c b/drivers/staging/go7007/wis-saa7113.c
index bd92545..72f5c1f 100644
--- a/drivers/staging/go7007/wis-saa7113.c
+++ b/drivers/staging/go7007/wis-saa7113.c
@@ -289,7 +289,6 @@ static int wis_saa7113_probe(struct i2c_client *client,
 	if (write_regs(client, initial_registers) < 0) {
 		printk(KERN_ERR
 			"wis-saa7113: error initializing SAA7113\n");
-		i2c_set_clientdata(client, NULL);
 		kfree(dec);
 		return -ENODEV;
 	}
@@ -301,7 +300,6 @@ static int wis_saa7113_remove(struct i2c_client *client)
 {
 	struct wis_saa7113 *dec = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(dec);
 	return 0;
 }
diff --git a/drivers/staging/go7007/wis-saa7115.c b/drivers/staging/go7007/wis-saa7115.c
index b2eb804..cd950b6 100644
--- a/drivers/staging/go7007/wis-saa7115.c
+++ b/drivers/staging/go7007/wis-saa7115.c
@@ -422,7 +422,6 @@ static int wis_saa7115_probe(struct i2c_client *client,
 	if (write_regs(client, initial_registers) < 0) {
 		printk(KERN_ERR
 			"wis-saa7115: error initializing SAA7115\n");
-		i2c_set_clientdata(client, NULL);
 		kfree(dec);
 		return -ENODEV;
 	}
@@ -434,7 +433,6 @@ static int wis_saa7115_remove(struct i2c_client *client)
 {
 	struct wis_saa7115 *dec = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(dec);
 	return 0;
 }
diff --git a/drivers/staging/go7007/wis-sony-tuner.c b/drivers/staging/go7007/wis-sony-tuner.c
index b101329..981c9b3 100644
--- a/drivers/staging/go7007/wis-sony-tuner.c
+++ b/drivers/staging/go7007/wis-sony-tuner.c
@@ -684,7 +684,6 @@ static int wis_sony_tuner_remove(struct i2c_client *client)
 {
 	struct wis_sony_tuner *t = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(t);
 	return 0;
 }
diff --git a/drivers/staging/go7007/wis-tw2804.c b/drivers/staging/go7007/wis-tw2804.c
index 315268d..ee28a99 100644
--- a/drivers/staging/go7007/wis-tw2804.c
+++ b/drivers/staging/go7007/wis-tw2804.c
@@ -323,7 +323,6 @@ static int wis_tw2804_remove(struct i2c_client *client)
 {
 	struct wis_tw2804 *dec = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(dec);
 	return 0;
 }
diff --git a/drivers/staging/go7007/wis-tw9903.c b/drivers/staging/go7007/wis-tw9903.c
index 2afea09..80d4726 100644
--- a/drivers/staging/go7007/wis-tw9903.c
+++ b/drivers/staging/go7007/wis-tw9903.c
@@ -294,7 +294,6 @@ static int wis_tw9903_probe(struct i2c_client *client,
 
 	if (write_regs(client, initial_registers) < 0) {
 		printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
-		i2c_set_clientdata(client, NULL);
 		kfree(dec);
 		return -ENODEV;
 	}
@@ -306,7 +305,6 @@ static int wis_tw9903_remove(struct i2c_client *client)
 {
 	struct wis_tw9903 *dec = i2c_get_clientdata(client);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(dec);
 	return 0;
 }
diff --git a/drivers/staging/iio/adc/max1363_core.c b/drivers/staging/iio/adc/max1363_core.c
index 20e2674..905f856 100644
--- a/drivers/staging/iio/adc/max1363_core.c
+++ b/drivers/staging/iio/adc/max1363_core.c
@@ -1011,7 +1011,6 @@ error_put_reg:
 	if (!IS_ERR(st->reg))
 		regulator_put(st->reg);
 error_free_st:
-	i2c_set_clientdata(client, NULL);
 	kfree(st);
 
 error_ret:
@@ -1030,7 +1029,6 @@ static int max1363_remove(struct i2c_client *client)
 		regulator_disable(st->reg);
 		regulator_put(st->reg);
 	}
-	i2c_set_clientdata(client, NULL);
 	kfree(st);
 
 	return 0;
diff --git a/drivers/staging/iio/light/tsl2563.c b/drivers/staging/iio/light/tsl2563.c
index 43aaacf..e4b0a5e 100644
--- a/drivers/staging/iio/light/tsl2563.c
+++ b/drivers/staging/iio/light/tsl2563.c
@@ -694,7 +694,6 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
 fail2:
 	iio_device_unregister(chip->indio_dev);
 fail1:
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return err;
 }
@@ -705,7 +704,6 @@ static int tsl2563_remove(struct i2c_client *client)
 
 	iio_device_unregister(chip->indio_dev);
 
-	i2c_set_clientdata(client, NULL);
 	kfree(chip);
 	return 0;
 }
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 921ca37..3ec2460 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -756,7 +756,6 @@ out:
 out1:
 	backlight_device_unregister(bl);
 out2:
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return ret;
@@ -776,7 +775,6 @@ static int __devexit adp8860_remove(struct i2c_client *client)
 			&adp8860_bl_attr_group);
 
 	backlight_device_unregister(data->bl);
-	i2c_set_clientdata(client, NULL);
 	kfree(data);
 
 	return 0;
diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index e03e60b..2a04b38 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -119,7 +119,6 @@ static int __devinit tosa_bl_probe(struct i2c_client *client,
 
 err_reg:
 	data->bl = NULL;
-	i2c_set_clientdata(client, NULL);
 err_gpio_dir:
 	gpio_free(TOSA_GPIO_BL_C20MA);
 err_gpio_bl:
@@ -133,7 +132,6 @@ static int __devexit tosa_bl_remove(struct i2c_client *client)
 
 	backlight_device_unregister(data->bl);
 	data->bl = NULL;
-	i2c_set_clientdata(client, NULL);
 
 	gpio_free(TOSA_GPIO_BL_C20MA);