21 files changed, 87 insertions, 32 deletions

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 6e2c3b064f53..34a2de9c5385 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -31,7 +31,7 @@ static ssize_t class_attr_show(struct kobject *kobj, struct attribute *attr,
         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 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr,
         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 fb456b729803..9121c77b77fa 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -79,13 +79,17 @@ void unregister_cpu(struct cpu *cpu)
 }
 
 #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 a95024166b66..6604fb33d072 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -69,7 +69,9 @@ fw_load_abort(struct firmware_priv *fw_priv)
 }
 
 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 @@ firmware_timeout_show(struct class *class, char *buf)
  *      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 563656ad75a1..495f15e92d4c 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -331,7 +331,8 @@ static int block_size_init(void)
  */
 #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 @@ static inline int memory_probe_init(void)
 
 /* 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 @@ store_soft_offline_page(struct class *class, const char *buf, size_t count)
 
 /* 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 a808b1530b3b..eb2091aa1c19 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -476,7 +476,9 @@ static void class_osdblk_release(struct class *cls)
         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 @@ static ssize_t class_osdblk_list(struct class *c, char *data)
         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 @@ err_out_mod:
         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 b72935b8f203..73d815d3f1b2 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -337,7 +337,9 @@ static void class_pktcdvd_release(struct class *cls)
 {
         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 @@ static ssize_t class_pktcdvd_show_map(struct class *c, char *data)
         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 @@ static ssize_t class_pktcdvd_store_add(struct class *c, const char *buf,
         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 9006fdb26fea..6d1b86661e63 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -623,7 +623,9 @@ static const struct attribute_group gpiochip_attr_group = {
  * /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 @@ done:
         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 7e42b7e9d43a..b95aaf23596e 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -71,7 +71,8 @@ static int drm_class_resume(struct device *dev)
 }
 
 /* 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 1b09b735c5a8..02e209ff33fd 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -1336,7 +1336,9 @@ static void ib_ucm_remove_one(struct ib_device *device)
         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 02d360cfc2f7..d0de8f265f45 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -965,7 +965,9 @@ static ssize_t show_port(struct device *dev, struct device_attribute *attr,
 }
 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 4fa2e6516441..60879399207a 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -691,7 +691,9 @@ static ssize_t show_dev_abi_version(struct device *device,
 }
 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 04c27266f567..d30ae9560309 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -497,7 +497,7 @@ static struct pci_driver phantom_pci_driver = {
         .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 bc45ef9af17d..fad40aa6f099 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -89,7 +89,8 @@ DEFINE_MUTEX(ubi_devices_mutex);
 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 5acd557cea9b..b8bec086daa1 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 struct net_device *bond_get_by_name(struct net *net, const char *ifname)
  */
 
 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 cadb6f7321ad..7d93f50a0a64 100644
--- a/drivers/staging/asus_oled/asus_oled.c
+++ b/drivers/staging/asus_oled/asus_oled.c
@@ -770,7 +770,9 @@ static struct usb_driver oled_driver = {
         .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 da77e41de990..08bd6dbfd4a6 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;
diff --git a/include/linux/device.h b/include/linux/device.h
index b30527db3ac0..190f8d30d1d3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -251,8 +251,10 @@ extern struct device *class_find_device(struct class *class,
 
 struct class_attribute {
         struct attribute attr;
-        ssize_t (*show)(struct class *class, char *buf);
-        ssize_t (*store)(struct class *class, const char *buf, size_t count);
+        ssize_t (*show)(struct class *class, struct class_attribute *attr,
+                        char *buf);
+        ssize_t (*store)(struct class *class, struct class_attribute *attr,
+                        const char *buf, size_t count);
 };
 
 #define CLASS_ATTR(_name, _mode, _show, _store)                 \
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 400efa26ddba..4db7ae2fe07d 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -3937,7 +3937,9 @@ drop:
         return 0;
 }
 
-static ssize_t l2cap_sysfs_show(struct class *dev, char *buf)
+static ssize_t l2cap_sysfs_show(struct class *dev,
+                                struct class_attribute *attr,
+                                char *buf)
 {
         struct sock *sk;
         struct hlist_node *node;
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 89f4a59eb82b..db8a68e1a5ba 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -2098,7 +2098,9 @@ static struct hci_cb rfcomm_cb = {
         .security_cfm   = rfcomm_security_cfm
 };
 
-static ssize_t rfcomm_dlc_sysfs_show(struct class *dev, char *buf)
+static ssize_t rfcomm_dlc_sysfs_show(struct class *dev,
+                                     struct class_attribute *attr,
+                                     char *buf)
 {
         struct rfcomm_session *s;
         struct list_head *pp, *p;
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 4b5968dda673..ca87d6ac6a20 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -1061,7 +1061,9 @@ done:
         return result;
 }
 
-static ssize_t rfcomm_sock_sysfs_show(struct class *dev, char *buf)
+static ssize_t rfcomm_sock_sysfs_show(struct class *dev,
+                                      struct class_attribute *attr,
+                                      char *buf)
 {
         struct sock *sk;
         struct hlist_node *node;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index dd8f6ec57dce..f93b939539bc 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -953,7 +953,9 @@ drop:
         return 0;
 }
 
-static ssize_t sco_sysfs_show(struct class *dev, char *buf)
+static ssize_t sco_sysfs_show(struct class *dev,
+                                struct class_attribute *attr,
+                                char *buf)
 {
         struct sock *sk;
         struct hlist_node *node;