diff --git a/drivers/base/class.c b/drivers/base/class.c
index 6e2c3b0..34a2de9 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -31,7 +31,7 @@
 	ssize_t ret = -EIO;
 
 	if (class_attr->show)
-		ret = class_attr->show(cp->class, buf);
+		ret = class_attr->show(cp->class, class_attr, buf);
 	return ret;
 }
 
@@ -43,7 +43,7 @@
 	ssize_t ret = -EIO;
 
 	if (class_attr->store)
-		ret = class_attr->store(cp->class, buf, count);
+		ret = class_attr->store(cp->class, class_attr, buf, count);
 	return ret;
 }
 
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index fb456b7..9121c77b 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -79,13 +79,17 @@
 }
 
 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
-static ssize_t cpu_probe_store(struct class *class, const char *buf,
+static ssize_t cpu_probe_store(struct class *class,
+				struct class_attribute *attr,
+				const char *buf,
 			       size_t count)
 {
 	return arch_cpu_probe(buf, count);
 }
 
-static ssize_t cpu_release_store(struct class *class, const char *buf,
+static ssize_t cpu_release_store(struct class *class,
+				struct class_attribute *attr,
+				const char *buf,
 				 size_t count)
 {
 	return arch_cpu_release(buf, count);
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index a950241..6604fb33 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -69,7 +69,9 @@
 }
 
 static ssize_t
-firmware_timeout_show(struct class *class, char *buf)
+firmware_timeout_show(struct class *class,
+		      struct class_attribute *attr,
+		      char *buf)
 {
 	return sprintf(buf, "%d\n", loading_timeout);
 }
@@ -87,7 +89,9 @@
  *	Note: zero means 'wait forever'.
  **/
 static ssize_t
-firmware_timeout_store(struct class *class, const char *buf, size_t count)
+firmware_timeout_store(struct class *class,
+			struct class_attribute *attr,
+			const char *buf, size_t count)
 {
 	loading_timeout = simple_strtol(buf, NULL, 10);
 	if (loading_timeout < 0)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 563656a..495f15e 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -331,7 +331,8 @@
  */
 #ifdef CONFIG_ARCH_MEMORY_PROBE
 static ssize_t
-memory_probe_store(struct class *class, const char *buf, size_t count)
+memory_probe_store(struct class *class, struct class_attribute *attr,
+		   const char *buf, size_t count)
 {
 	u64 phys_addr;
 	int nid;
@@ -368,7 +369,9 @@
 
 /* Soft offline a page */
 static ssize_t
-store_soft_offline_page(struct class *class, const char *buf, size_t count)
+store_soft_offline_page(struct class *class,
+			struct class_attribute *attr,
+			const char *buf, size_t count)
 {
 	int ret;
 	u64 pfn;
@@ -385,7 +388,9 @@
 
 /* Forcibly offline a page, including killing processes. */
 static ssize_t
-store_hard_offline_page(struct class *class, const char *buf, size_t count)
+store_hard_offline_page(struct class *class,
+			struct class_attribute *attr,
+			const char *buf, size_t count)
 {
 	int ret;
 	u64 pfn;
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index a808b15..eb2091a 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -476,7 +476,9 @@
 	kfree(cls);
 }
 
-static ssize_t class_osdblk_list(struct class *c, char *data)
+static ssize_t class_osdblk_list(struct class *c,
+				struct class_attribute *attr,
+				char *data)
 {
 	int n = 0;
 	struct list_head *tmp;
@@ -500,7 +502,9 @@
 	return n;
 }
 
-static ssize_t class_osdblk_add(struct class *c, const char *buf, size_t count)
+static ssize_t class_osdblk_add(struct class *c,
+				struct class_attribute *attr,
+				const char *buf, size_t count)
 {
 	struct osdblk_device *osdev;
 	ssize_t rc;
@@ -592,7 +596,9 @@
 	return rc;
 }
 
-static ssize_t class_osdblk_remove(struct class *c, const char *buf,
+static ssize_t class_osdblk_remove(struct class *c,
+					struct class_attribute *attr,
+					const char *buf,
 					size_t count)
 {
 	struct osdblk_device *osdev = NULL;
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index b72935b8..73d815d 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -337,7 +337,9 @@
 {
 	kfree(cls);
 }
-static ssize_t class_pktcdvd_show_map(struct class *c, char *data)
+static ssize_t class_pktcdvd_show_map(struct class *c,
+					struct class_attribute *attr,
+					char *data)
 {
 	int n = 0;
 	int idx;
@@ -356,7 +358,9 @@
 	return n;
 }
 
-static ssize_t class_pktcdvd_store_add(struct class *c, const char *buf,
+static ssize_t class_pktcdvd_store_add(struct class *c,
+					struct class_attribute *attr,
+					const char *buf,
 					size_t count)
 {
 	unsigned int major, minor;
@@ -376,7 +380,9 @@
 	return -EINVAL;
 }
 
-static ssize_t class_pktcdvd_store_remove(struct class *c, const char *buf,
+static ssize_t class_pktcdvd_store_remove(struct class *c,
+					  struct class_attribute *attr,
+					  const char *buf,
 					size_t count)
 {
 	unsigned int major, minor;
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 9006fdb..6d1b866 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -623,7 +623,9 @@
  * /sys/class/gpio/unexport ... write-only
  *	integer N ... number of GPIO to unexport
  */
-static ssize_t export_store(struct class *class, const char *buf, size_t len)
+static ssize_t export_store(struct class *class,
+				struct class_attribute *attr,
+				const char *buf, size_t len)
 {
 	long	gpio;
 	int	status;
@@ -653,7 +655,9 @@
 	return status ? : len;
 }
 
-static ssize_t unexport_store(struct class *class, const char *buf, size_t len)
+static ssize_t unexport_store(struct class *class,
+				struct class_attribute *attr,
+				const char *buf, size_t len)
 {
 	long	gpio;
 	int	status;
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 7e42b7e..b95aaf2 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -71,7 +71,8 @@
 }
 
 /* Display the version of drm_core. This doesn't work right in current design */
-static ssize_t version_show(struct class *dev, char *buf)
+static ssize_t version_show(struct class *dev, struct class_attribute *attr,
+				char *buf)
 {
 	return sprintf(buf, "%s %d.%d.%d %s\n", CORE_NAME, CORE_MAJOR,
 		       CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index 1b09b73..02e209f 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1336,7 +1336,9 @@
 	device_unregister(&ucm_dev->dev);
 }
 
-static ssize_t show_abi_version(struct class *class, char *buf)
+static ssize_t show_abi_version(struct class *class,
+				struct class_attribute *attr,
+				char *buf)
 {
 	return sprintf(buf, "%d\n", IB_USER_CM_ABI_VERSION);
 }
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 02d360c..d0de8f2 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -965,7 +965,9 @@
 }
 static DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
 
-static ssize_t show_abi_version(struct class *class, char *buf)
+static ssize_t show_abi_version(struct class *class,
+				struct class_attribute *attr,
+				char *buf)
 {
 	return sprintf(buf, "%d\n", IB_USER_MAD_ABI_VERSION);
 }
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 4fa2e65..6087939 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -691,7 +691,9 @@
 }
 static DEVICE_ATTR(abi_version, S_IRUGO, show_dev_abi_version, NULL);
 
-static ssize_t show_abi_version(struct class *class, char *buf)
+static ssize_t show_abi_version(struct class *class,
+				struct class_attribute *attr,
+				char *buf)
 {
 	return sprintf(buf, "%d\n", IB_USER_VERBS_ABI_VERSION);
 }
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 04c2726..d30ae95 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -497,7 +497,7 @@
 	.resume = phantom_resume
 };
 
-static ssize_t phantom_show_version(struct class *cls, char *buf)
+static ssize_t phantom_show_version(struct class *cls, struct class_attribute *attr, char *buf)
 {
 	return sprintf(buf, PHANTOM_VERSION "\n");
 }
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index bc45ef9..fad40aa 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -89,7 +89,8 @@
 static DEFINE_SPINLOCK(ubi_devices_lock);
 
 /* "Show" method for files in '/<sysfs>/class/ubi/' */
-static ssize_t ubi_version_show(struct class *class, char *buf)
+static ssize_t ubi_version_show(struct class *class, struct class_attribute *attr,
+				char *buf)
 {
 	return sprintf(buf, "%d\n", UBI_VERSION);
 }
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 5acd557..b8bec08 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -51,7 +51,9 @@
  * "show" function for the bond_masters attribute.
  * The class parameter is ignored.
  */
-static ssize_t bonding_show_bonds(struct class *cls, char *buf)
+static ssize_t bonding_show_bonds(struct class *cls,
+				  struct class_attribute *attr,
+				  char *buf)
 {
 	struct net *net = current->nsproxy->net_ns;
 	struct bond_net *bn = net_generic(net, bond_net_id);
@@ -98,6 +100,7 @@
  */
 
 static ssize_t bonding_store_bonds(struct class *cls,
+				   struct class_attribute *attr,
 				   const char *buffer, size_t count)
 {
 	struct net *net = current->nsproxy->net_ns;
diff --git a/drivers/staging/asus_oled/asus_oled.c b/drivers/staging/asus_oled/asus_oled.c
index cadb6f7..7d93f50 100644
--- a/drivers/staging/asus_oled/asus_oled.c
+++ b/drivers/staging/asus_oled/asus_oled.c
@@ -770,7 +770,9 @@
 	.id_table =	id_table,
 };
 
-static ssize_t version_show(struct class *dev, char *buf)
+static ssize_t version_show(struct class *dev,
+			    struct class_attribute *attr,
+			    char *buf)
 {
 	return sprintf(buf, ASUS_OLED_UNDERSCORE_NAME " %s\n",
 		       ASUS_OLED_VERSION);
diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c
index da77e41..08bd6db 100644
--- a/drivers/uwb/driver.c
+++ b/drivers/uwb/driver.c
@@ -74,13 +74,16 @@
 unsigned long beacon_timeout_ms = 500;
 
 static
-ssize_t beacon_timeout_ms_show(struct class *class, char *buf)
+ssize_t beacon_timeout_ms_show(struct class *class,
+				struct class_attribute *attr,
+				char *buf)
 {
 	return scnprintf(buf, PAGE_SIZE, "%lu\n", beacon_timeout_ms);
 }
 
 static
 ssize_t beacon_timeout_ms_store(struct class *class,
+				struct class_attribute *attr,
 				const char *buf, size_t size)
 {
 	unsigned long bt;