mxcmmc: Fix missing return value checking in DMA setup code.
[safe/jmp/linux-2.6] / drivers / scsi / scsi_transport_sas.c
index 6d39150..50988cb 100644 (file)
@@ -6,7 +6,7 @@
  *
  * The SAS transport class contains common code to deal with SAS HBAs,
  * an aproximated representation of SAS topologies in the driver model,
- * and various sysfs attributes to expose these topologies and managment
+ * and various sysfs attributes to expose these topologies and management
  * interfaces to userspace.
  *
  * In addition to the basic SCSI core objects this transport class
@@ -29,6 +29,8 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/blkdev.h>
+#include <linux/bsg.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
@@ -40,6 +42,7 @@
 struct sas_host_attrs {
        struct list_head rphy_list;
        struct mutex lock;
+       struct request_queue *q;
        u32 next_target_id;
        u32 next_expander_id;
        int next_port_id;
@@ -50,8 +53,8 @@ struct sas_host_attrs {
 /*
  * Hack to allow attributes of the same name in different objects.
  */
-#define SAS_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
-       struct class_device_attribute class_device_attr_##_prefix##_##_name = \
+#define SAS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
+       struct device_attribute dev_attr_##_prefix##_##_name = \
        __ATTR(_name,_mode,_show,_store)
 
 
@@ -152,12 +155,124 @@ static struct {
 sas_bitfield_name_search(linkspeed, sas_linkspeed_names)
 sas_bitfield_name_set(linkspeed, sas_linkspeed_names)
 
+static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
+                           struct sas_rphy *rphy)
+{
+       struct request *req;
+       int ret;
+       int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
+
+       while (!blk_queue_plugged(q)) {
+               req = elv_next_request(q);
+               if (!req)
+                       break;
+
+               blkdev_dequeue_request(req);
+
+               spin_unlock_irq(q->queue_lock);
+
+               handler = to_sas_internal(shost->transportt)->f->smp_handler;
+               ret = handler(shost, rphy, req);
+               req->errors = ret;
+
+               spin_lock_irq(q->queue_lock);
+
+               req->end_io(req, ret);
+       }
+}
+
+static void sas_host_smp_request(struct request_queue *q)
+{
+       sas_smp_request(q, (struct Scsi_Host *)q->queuedata, NULL);
+}
+
+static void sas_non_host_smp_request(struct request_queue *q)
+{
+       struct sas_rphy *rphy = q->queuedata;
+       sas_smp_request(q, rphy_to_shost(rphy), rphy);
+}
+
+static void sas_host_release(struct device *dev)
+{
+       struct Scsi_Host *shost = dev_to_shost(dev);
+       struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
+       struct request_queue *q = sas_host->q;
+
+       if (q)
+               blk_cleanup_queue(q);
+}
+
+static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
+{
+       struct request_queue *q;
+       int error;
+       struct device *dev;
+       char namebuf[20];
+       const char *name;
+       void (*release)(struct device *);
+
+       if (!to_sas_internal(shost->transportt)->f->smp_handler) {
+               printk("%s can't handle SMP requests\n", shost->hostt->name);
+               return 0;
+       }
+
+       if (rphy) {
+               q = blk_init_queue(sas_non_host_smp_request, NULL);
+               dev = &rphy->dev;
+               name = dev_name(dev);
+               release = NULL;
+       } else {
+               q = blk_init_queue(sas_host_smp_request, NULL);
+               dev = &shost->shost_gendev;
+               snprintf(namebuf, sizeof(namebuf),
+                        "sas_host%d", shost->host_no);
+               name = namebuf;
+               release = sas_host_release;
+       }
+       if (!q)
+               return -ENOMEM;
+
+       error = bsg_register_queue(q, dev, name, release);
+       if (error) {
+               blk_cleanup_queue(q);
+               return -ENOMEM;
+       }
+
+       if (rphy)
+               rphy->q = q;
+       else
+               to_sas_host_attrs(shost)->q = q;
+
+       if (rphy)
+               q->queuedata = rphy;
+       else
+               q->queuedata = shost;
+
+       queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
+       return 0;
+}
+
+static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
+{
+       struct request_queue *q;
+
+       if (rphy)
+               q = rphy->q;
+       else
+               q = to_sas_host_attrs(shost)->q;
+
+       if (!q)
+               return;
+
+       bsg_unregister_queue(q);
+}
+
 /*
  * SAS host attributes
  */
 
 static int sas_host_setup(struct transport_container *tc, struct device *dev,
-                         struct class_device *cdev)
+                         struct device *cdev)
 {
        struct Scsi_Host *shost = dev_to_shost(dev);
        struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
@@ -167,11 +282,26 @@ static int sas_host_setup(struct transport_container *tc, struct device *dev,
        sas_host->next_target_id = 0;
        sas_host->next_expander_id = 0;
        sas_host->next_port_id = 0;
+
+       if (sas_bsg_initialize(shost, NULL))
+               dev_printk(KERN_ERR, dev, "fail to a bsg device %d\n",
+                          shost->host_no);
+
+       return 0;
+}
+
+static int sas_host_remove(struct transport_container *tc, struct device *dev,
+                          struct device *cdev)
+{
+       struct Scsi_Host *shost = dev_to_shost(dev);
+
+       sas_bsg_remove(shost, NULL);
+
        return 0;
 }
 
 static DECLARE_TRANSPORT_CLASS(sas_host_class,
-               "sas_host", sas_host_setup, NULL, NULL);
+               "sas_host", sas_host_setup, sas_host_remove, NULL);
 
 static int sas_host_match(struct attribute_container *cont,
                            struct device *dev)
@@ -205,7 +335,7 @@ static int do_sas_phy_delete(struct device *dev, void *data)
 }
 
 /**
- * sas_remove_children  --  tear down a devices SAS data structures
+ * sas_remove_children  -  tear down a devices SAS data structures
  * @dev:       device belonging to the sas object
  *
  * Removes all SAS PHYs and remote PHYs for a given object
@@ -218,7 +348,7 @@ void sas_remove_children(struct device *dev)
 EXPORT_SYMBOL(sas_remove_children);
 
 /**
- * sas_remove_host  --  tear down a Scsi_Host's SAS data structures
+ * sas_remove_host  -  tear down a Scsi_Host's SAS data structures
  * @shost:     Scsi Host that is torn down
  *
  * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
@@ -237,22 +367,24 @@ EXPORT_SYMBOL(sas_remove_host);
 
 #define sas_phy_show_simple(field, name, format_string, cast)          \
 static ssize_t                                                         \
-show_sas_phy_##name(struct class_device *cdev, char *buf)              \
+show_sas_phy_##name(struct device *dev,                                \
+                   struct device_attribute *attr, char *buf)           \
 {                                                                      \
-       struct sas_phy *phy = transport_class_to_phy(cdev);             \
+       struct sas_phy *phy = transport_class_to_phy(dev);              \
                                                                        \
        return snprintf(buf, 20, format_string, cast phy->field);       \
 }
 
 #define sas_phy_simple_attr(field, name, format_string, type)          \
        sas_phy_show_simple(field, name, format_string, (type)) \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
+static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
 
 #define sas_phy_show_protocol(field, name)                             \
 static ssize_t                                                         \
-show_sas_phy_##name(struct class_device *cdev, char *buf)              \
+show_sas_phy_##name(struct device *dev,                                \
+                   struct device_attribute *attr, char *buf)           \
 {                                                                      \
-       struct sas_phy *phy = transport_class_to_phy(cdev);             \
+       struct sas_phy *phy = transport_class_to_phy(dev);              \
                                                                        \
        if (!phy->field)                                                \
                return snprintf(buf, 20, "none\n");                     \
@@ -261,13 +393,14 @@ show_sas_phy_##name(struct class_device *cdev, char *buf)         \
 
 #define sas_phy_protocol_attr(field, name)                             \
        sas_phy_show_protocol(field, name)                              \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
+static DEVICE_ATTR(name, S_IRUGO, show_sas_phy_##name, NULL)
 
 #define sas_phy_show_linkspeed(field)                                  \
 static ssize_t                                                         \
-show_sas_phy_##field(struct class_device *cdev, char *buf)             \
+show_sas_phy_##field(struct device *dev,                               \
+                    struct device_attribute *attr, char *buf)          \
 {                                                                      \
-       struct sas_phy *phy = transport_class_to_phy(cdev);             \
+       struct sas_phy *phy = transport_class_to_phy(dev);              \
                                                                        \
        return get_sas_linkspeed_names(phy->field, buf);                \
 }
@@ -275,10 +408,11 @@ show_sas_phy_##field(struct class_device *cdev, char *buf)                \
 /* Fudge to tell if we're minimum or maximum */
 #define sas_phy_store_linkspeed(field)                                 \
 static ssize_t                                                         \
-store_sas_phy_##field(struct class_device *cdev, const char *buf,      \
-                     size_t count)                                     \
+store_sas_phy_##field(struct device *dev,                              \
+                     struct device_attribute *attr,                    \
+                     const char *buf,  size_t count)                   \
 {                                                                      \
-       struct sas_phy *phy = transport_class_to_phy(cdev);             \
+       struct sas_phy *phy = transport_class_to_phy(dev);              \
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);        \
        struct sas_internal *i = to_sas_internal(shost->transportt);    \
        u32 value;                                                      \
@@ -297,19 +431,20 @@ store_sas_phy_##field(struct class_device *cdev, const char *buf, \
 #define sas_phy_linkspeed_rw_attr(field)                               \
        sas_phy_show_linkspeed(field)                                   \
        sas_phy_store_linkspeed(field)                                  \
-static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field,         \
+static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field,               \
        store_sas_phy_##field)
 
 #define sas_phy_linkspeed_attr(field)                                  \
        sas_phy_show_linkspeed(field)                                   \
-static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
+static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
 
 
 #define sas_phy_show_linkerror(field)                                  \
 static ssize_t                                                         \
-show_sas_phy_##field(struct class_device *cdev, char *buf)             \
+show_sas_phy_##field(struct device *dev,                               \
+                    struct device_attribute *attr, char *buf)          \
 {                                                                      \
-       struct sas_phy *phy = transport_class_to_phy(cdev);             \
+       struct sas_phy *phy = transport_class_to_phy(dev);              \
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);        \
        struct sas_internal *i = to_sas_internal(shost->transportt);    \
        int error;                                                      \
@@ -322,24 +457,25 @@ show_sas_phy_##field(struct class_device *cdev, char *buf)                \
 
 #define sas_phy_linkerror_attr(field)                                  \
        sas_phy_show_linkerror(field)                                   \
-static CLASS_DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
+static DEVICE_ATTR(field, S_IRUGO, show_sas_phy_##field, NULL)
 
 
 static ssize_t
-show_sas_device_type(struct class_device *cdev, char *buf)
+show_sas_device_type(struct device *dev,
+                    struct device_attribute *attr, char *buf)
 {
-       struct sas_phy *phy = transport_class_to_phy(cdev);
+       struct sas_phy *phy = transport_class_to_phy(dev);
 
        if (!phy->identify.device_type)
                return snprintf(buf, 20, "none\n");
        return get_sas_device_type_names(phy->identify.device_type, buf);
 }
-static CLASS_DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
+static DEVICE_ATTR(device_type, S_IRUGO, show_sas_device_type, NULL);
 
-static ssize_t do_sas_phy_enable(struct class_device *cdev,
+static ssize_t do_sas_phy_enable(struct device *dev,
                size_t count, int enable)
 {
-       struct sas_phy *phy = transport_class_to_phy(cdev);
+       struct sas_phy *phy = transport_class_to_phy(dev);
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
        struct sas_internal *i = to_sas_internal(shost->transportt);
        int error;
@@ -351,18 +487,19 @@ static ssize_t do_sas_phy_enable(struct class_device *cdev,
        return count;
 };
 
-static ssize_t store_sas_phy_enable(struct class_device *cdev,
-               const char *buf, size_t count)
+static ssize_t
+store_sas_phy_enable(struct device *dev, struct device_attribute *attr,
+                    const char *buf, size_t count)
 {
        if (count < 1)
                return -EINVAL;
 
        switch (buf[0]) {
        case '0':
-               do_sas_phy_enable(cdev, count, 0);
+               do_sas_phy_enable(dev, count, 0);
                break;
        case '1':
-               do_sas_phy_enable(cdev, count, 1);
+               do_sas_phy_enable(dev, count, 1);
                break;
        default:
                return -EINVAL;
@@ -371,20 +508,22 @@ static ssize_t store_sas_phy_enable(struct class_device *cdev,
        return count;
 }
 
-static ssize_t show_sas_phy_enable(struct class_device *cdev, char *buf)
+static ssize_t
+show_sas_phy_enable(struct device *dev, struct device_attribute *attr,
+                   char *buf)
 {
-       struct sas_phy *phy = transport_class_to_phy(cdev);
+       struct sas_phy *phy = transport_class_to_phy(dev);
 
        return snprintf(buf, 20, "%d", phy->enabled);
 }
 
-static CLASS_DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
+static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
                         store_sas_phy_enable);
 
-static ssize_t do_sas_phy_reset(struct class_device *cdev,
-               size_t count, int hard_reset)
+static ssize_t
+do_sas_phy_reset(struct device *dev, size_t count, int hard_reset)
 {
-       struct sas_phy *phy = transport_class_to_phy(cdev);
+       struct sas_phy *phy = transport_class_to_phy(dev);
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
        struct sas_internal *i = to_sas_internal(shost->transportt);
        int error;
@@ -395,19 +534,21 @@ static ssize_t do_sas_phy_reset(struct class_device *cdev,
        return count;
 };
 
-static ssize_t store_sas_link_reset(struct class_device *cdev,
-               const char *buf, size_t count)
+static ssize_t
+store_sas_link_reset(struct device *dev, struct device_attribute *attr,
+                    const char *buf, size_t count)
 {
-       return do_sas_phy_reset(cdev, count, 0);
+       return do_sas_phy_reset(dev, count, 0);
 }
-static CLASS_DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
+static DEVICE_ATTR(link_reset, S_IWUSR, NULL, store_sas_link_reset);
 
-static ssize_t store_sas_hard_reset(struct class_device *cdev,
-               const char *buf, size_t count)
+static ssize_t
+store_sas_hard_reset(struct device *dev, struct device_attribute *attr,
+                    const char *buf, size_t count)
 {
-       return do_sas_phy_reset(cdev, count, 1);
+       return do_sas_phy_reset(dev, count, 1);
 }
-static CLASS_DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
+static DEVICE_ATTR(hard_reset, S_IWUSR, NULL, store_sas_hard_reset);
 
 sas_phy_protocol_attr(identify.initiator_port_protocols,
                initiator_port_protocols);
@@ -459,7 +600,7 @@ static void sas_phy_release(struct device *dev)
 }
 
 /**
- * sas_phy_alloc  --  allocates and initialize a SAS PHY structure
+ * sas_phy_alloc  -  allocates and initialize a SAS PHY structure
  * @parent:    Parent device
  * @number:    Phy index
  *
@@ -488,10 +629,10 @@ struct sas_phy *sas_phy_alloc(struct device *parent, int number)
        INIT_LIST_HEAD(&phy->port_siblings);
        if (scsi_is_sas_expander_device(parent)) {
                struct sas_rphy *rphy = dev_to_rphy(parent);
-               sprintf(phy->dev.bus_id, "phy-%d:%d:%d", shost->host_no,
+               dev_set_name(&phy->dev, "phy-%d:%d:%d", shost->host_no,
                        rphy->scsi_target_id, number);
        } else
-               sprintf(phy->dev.bus_id, "phy-%d:%d", shost->host_no, number);
+               dev_set_name(&phy->dev, "phy-%d:%d", shost->host_no, number);
 
        transport_setup_device(&phy->dev);
 
@@ -500,7 +641,7 @@ struct sas_phy *sas_phy_alloc(struct device *parent, int number)
 EXPORT_SYMBOL(sas_phy_alloc);
 
 /**
- * sas_phy_add  --  add a SAS PHY to the device hierachy
+ * sas_phy_add  -  add a SAS PHY to the device hierarchy
  * @phy:       The PHY to be added
  *
  * Publishes a SAS PHY to the rest of the system.
@@ -520,7 +661,7 @@ int sas_phy_add(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_add);
 
 /**
- * sas_phy_free  --  free a SAS PHY
+ * sas_phy_free  -  free a SAS PHY
  * @phy:       SAS PHY to free
  *
  * Frees the specified SAS PHY.
@@ -537,7 +678,7 @@ void sas_phy_free(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_free);
 
 /**
- * sas_phy_delete  --  remove SAS PHY
+ * sas_phy_delete  -  remove SAS PHY
  * @phy:       SAS PHY to remove
  *
  * Removes the specified SAS PHY.  If the SAS PHY has an
@@ -559,7 +700,7 @@ sas_phy_delete(struct sas_phy *phy)
 EXPORT_SYMBOL(sas_phy_delete);
 
 /**
- * scsi_is_sas_phy  --  check if a struct device represents a SAS PHY
+ * scsi_is_sas_phy  -  check if a struct device represents a SAS PHY
  * @dev:       device to check
  *
  * Returns:
@@ -576,16 +717,17 @@ EXPORT_SYMBOL(scsi_is_sas_phy);
  */
 #define sas_port_show_simple(field, name, format_string, cast)         \
 static ssize_t                                                         \
-show_sas_port_##name(struct class_device *cdev, char *buf)             \
+show_sas_port_##name(struct device *dev,                               \
+                    struct device_attribute *attr, char *buf)          \
 {                                                                      \
-       struct sas_port *port = transport_class_to_sas_port(cdev);      \
+       struct sas_port *port = transport_class_to_sas_port(dev);       \
                                                                        \
        return snprintf(buf, 20, format_string, cast port->field);      \
 }
 
 #define sas_port_simple_attr(field, name, format_string, type)         \
        sas_port_show_simple(field, name, format_string, (type))        \
-static CLASS_DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
+static DEVICE_ATTR(name, S_IRUGO, show_sas_port_##name, NULL)
 
 sas_port_simple_attr(num_phys, num_phys, "%d\n", int);
 
@@ -628,7 +770,7 @@ static void sas_port_create_link(struct sas_port *port,
        int res;
 
        res = sysfs_create_link(&port->dev.kobj, &phy->dev.kobj,
-                               phy->dev.bus_id);
+                               dev_name(&phy->dev));
        if (res)
                goto err;
        res = sysfs_create_link(&phy->dev.kobj, &port->dev.kobj, "port");
@@ -637,13 +779,13 @@ static void sas_port_create_link(struct sas_port *port,
        return;
 err:
        printk(KERN_ERR "%s: Cannot create port links, err=%d\n",
-              __FUNCTION__, res);
+              __func__, res);
 }
 
 static void sas_port_delete_link(struct sas_port *port,
                                 struct sas_phy *phy)
 {
-       sysfs_remove_link(&port->dev.kobj, phy->dev.bus_id);
+       sysfs_remove_link(&port->dev.kobj, dev_name(&phy->dev));
        sysfs_remove_link(&phy->dev.kobj, "port");
 }
 
@@ -679,11 +821,11 @@ struct sas_port *sas_port_alloc(struct device *parent, int port_id)
 
        if (scsi_is_sas_expander_device(parent)) {
                struct sas_rphy *rphy = dev_to_rphy(parent);
-               sprintf(port->dev.bus_id, "port-%d:%d:%d", shost->host_no,
-                       rphy->scsi_target_id, port->port_identifier);
+               dev_set_name(&port->dev, "port-%d:%d:%d", shost->host_no,
+                            rphy->scsi_target_id, port->port_identifier);
        } else
-               sprintf(port->dev.bus_id, "port-%d:%d", shost->host_no,
-                       port->port_identifier);
+               dev_set_name(&port->dev, "port-%d:%d", shost->host_no,
+                            port->port_identifier);
 
        transport_setup_device(&port->dev);
 
@@ -725,7 +867,6 @@ EXPORT_SYMBOL(sas_port_alloc_num);
 
 /**
  * sas_port_add - add a SAS port to the device hierarchy
- *
  * @port:      port to be added
  *
  * publishes a port to the rest of the system
@@ -750,7 +891,7 @@ int sas_port_add(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_add);
 
 /**
- * sas_port_free  --  free a SAS PORT
+ * sas_port_free  -  free a SAS PORT
  * @port:      SAS PORT to free
  *
  * Frees the specified SAS PORT.
@@ -767,7 +908,7 @@ void sas_port_free(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_free);
 
 /**
- * sas_port_delete  --  remove SAS PORT
+ * sas_port_delete  -  remove SAS PORT
  * @port:      SAS PORT to remove
  *
  * Removes the specified SAS PORT.  If the SAS PORT has an
@@ -794,7 +935,7 @@ void sas_port_delete(struct sas_port *port)
        if (port->is_backlink) {
                struct device *parent = port->dev.parent;
 
-               sysfs_remove_link(&port->dev.kobj, parent->bus_id);
+               sysfs_remove_link(&port->dev.kobj, dev_name(parent));
                port->is_backlink = 0;
        }
 
@@ -806,7 +947,7 @@ void sas_port_delete(struct sas_port *port)
 EXPORT_SYMBOL(sas_port_delete);
 
 /**
- * scsi_is_sas_port --  check if a struct device represents a SAS port
+ * scsi_is_sas_port -  check if a struct device represents a SAS port
  * @dev:       device to check
  *
  * Returns:
@@ -843,7 +984,8 @@ void sas_port_add_phy(struct sas_port *port, struct sas_phy *phy)
                /* If this trips, you added a phy that was already
                 * part of a different port */
                if (unlikely(tmp != phy)) {
-                       dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n", phy->dev.bus_id);
+                       dev_printk(KERN_ERR, &port->dev, "trying to add phy %s fails: it's already part of another port\n",
+                                  dev_name(&phy->dev));
                        BUG();
                }
        } else {
@@ -882,13 +1024,13 @@ void sas_port_mark_backlink(struct sas_port *port)
                return;
        port->is_backlink = 1;
        res = sysfs_create_link(&port->dev.kobj, &parent->kobj,
-                               parent->bus_id);
+                               dev_name(parent));
        if (res)
                goto err;
        return;
 err:
        printk(KERN_ERR "%s: Cannot create port backlink, err=%d\n",
-              __FUNCTION__, res);
+              __func__, res);
 
 }
 EXPORT_SYMBOL(sas_port_mark_backlink);
@@ -899,23 +1041,25 @@ EXPORT_SYMBOL(sas_port_mark_backlink);
 
 #define sas_rphy_show_simple(field, name, format_string, cast)         \
 static ssize_t                                                         \
-show_sas_rphy_##name(struct class_device *cdev, char *buf)             \
+show_sas_rphy_##name(struct device *dev,                               \
+                    struct device_attribute *attr, char *buf)          \
 {                                                                      \
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);  \
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);           \
                                                                        \
        return snprintf(buf, 20, format_string, cast rphy->field);      \
 }
 
 #define sas_rphy_simple_attr(field, name, format_string, type)         \
        sas_rphy_show_simple(field, name, format_string, (type))        \
-static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO,                      \
+static SAS_DEVICE_ATTR(rphy, name, S_IRUGO,                    \
                show_sas_rphy_##name, NULL)
 
 #define sas_rphy_show_protocol(field, name)                            \
 static ssize_t                                                         \
-show_sas_rphy_##name(struct class_device *cdev, char *buf)             \
+show_sas_rphy_##name(struct device *dev,                               \
+                    struct device_attribute *attr, char *buf)          \
 {                                                                      \
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);  \
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);           \
                                                                        \
        if (!rphy->field)                                       \
                return snprintf(buf, 20, "none\n");                     \
@@ -924,13 +1068,14 @@ show_sas_rphy_##name(struct class_device *cdev, char *buf)               \
 
 #define sas_rphy_protocol_attr(field, name)                            \
        sas_rphy_show_protocol(field, name)                             \
-static SAS_CLASS_DEVICE_ATTR(rphy, name, S_IRUGO,                      \
+static SAS_DEVICE_ATTR(rphy, name, S_IRUGO,                    \
                show_sas_rphy_##name, NULL)
 
 static ssize_t
-show_sas_rphy_device_type(struct class_device *cdev, char *buf)
+show_sas_rphy_device_type(struct device *dev,
+                         struct device_attribute *attr, char *buf)
 {
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);
 
        if (!rphy->identify.device_type)
                return snprintf(buf, 20, "none\n");
@@ -938,13 +1083,14 @@ show_sas_rphy_device_type(struct class_device *cdev, char *buf)
                        rphy->identify.device_type, buf);
 }
 
-static SAS_CLASS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
+static SAS_DEVICE_ATTR(rphy, device_type, S_IRUGO,
                show_sas_rphy_device_type, NULL);
 
 static ssize_t
-show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
+show_sas_rphy_enclosure_identifier(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
 {
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);
        struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
        struct sas_internal *i = to_sas_internal(shost->transportt);
@@ -964,13 +1110,14 @@ show_sas_rphy_enclosure_identifier(struct class_device *cdev, char *buf)
        return sprintf(buf, "0x%llx\n", (unsigned long long)identifier);
 }
 
-static SAS_CLASS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
+static SAS_DEVICE_ATTR(rphy, enclosure_identifier, S_IRUGO,
                show_sas_rphy_enclosure_identifier, NULL);
 
 static ssize_t
-show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
+show_sas_rphy_bay_identifier(struct device *dev,
+                            struct device_attribute *attr, char *buf)
 {
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);
        struct sas_phy *phy = dev_to_phy(rphy->dev.parent);
        struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
        struct sas_internal *i = to_sas_internal(shost->transportt);
@@ -985,7 +1132,7 @@ show_sas_rphy_bay_identifier(struct class_device *cdev, char *buf)
        return sprintf(buf, "%d\n", val);
 }
 
-static SAS_CLASS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
+static SAS_DEVICE_ATTR(rphy, bay_identifier, S_IRUGO,
                show_sas_rphy_bay_identifier, NULL);
 
 sas_rphy_protocol_attr(identify.initiator_port_protocols,
@@ -1043,9 +1190,10 @@ static DECLARE_TRANSPORT_CLASS(sas_end_dev_class,
 
 #define sas_end_dev_show_simple(field, name, format_string, cast)      \
 static ssize_t                                                         \
-show_sas_end_dev_##name(struct class_device *cdev, char *buf)          \
+show_sas_end_dev_##name(struct device *dev,                            \
+                       struct device_attribute *attr, char *buf)       \
 {                                                                      \
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);          \
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);           \
        struct sas_end_device *rdev = rphy_to_end_device(rphy);         \
                                                                        \
        return snprintf(buf, 20, format_string, cast rdev->field);      \
@@ -1053,7 +1201,7 @@ show_sas_end_dev_##name(struct class_device *cdev, char *buf)             \
 
 #define sas_end_dev_simple_attr(field, name, format_string, type)      \
        sas_end_dev_show_simple(field, name, format_string, (type))     \
-static SAS_CLASS_DEVICE_ATTR(end_dev, name, S_IRUGO,                   \
+static SAS_DEVICE_ATTR(end_dev, name, S_IRUGO,                         \
                show_sas_end_dev_##name, NULL)
 
 sas_end_dev_simple_attr(ready_led_meaning, ready_led_meaning, "%d\n", int);
@@ -1067,9 +1215,10 @@ static DECLARE_TRANSPORT_CLASS(sas_expander_class,
 
 #define sas_expander_show_simple(field, name, format_string, cast)     \
 static ssize_t                                                         \
-show_sas_expander_##name(struct class_device *cdev, char *buf)         \
+show_sas_expander_##name(struct device *dev,                           \
+                        struct device_attribute *attr, char *buf)      \
 {                                                                      \
-       struct sas_rphy *rphy = transport_class_to_rphy(cdev);          \
+       struct sas_rphy *rphy = transport_class_to_rphy(dev);           \
        struct sas_expander_device *edev = rphy_to_expander_device(rphy); \
                                                                        \
        return snprintf(buf, 20, format_string, cast edev->field);      \
@@ -1077,7 +1226,7 @@ show_sas_expander_##name(struct class_device *cdev, char *buf)            \
 
 #define sas_expander_simple_attr(field, name, format_string, type)     \
        sas_expander_show_simple(field, name, format_string, (type))    \
-static SAS_CLASS_DEVICE_ATTR(expander, name, S_IRUGO,                  \
+static SAS_DEVICE_ATTR(expander, name, S_IRUGO,                        \
                show_sas_expander_##name, NULL)
 
 sas_expander_simple_attr(vendor_id, vendor_id, "%s\n", char *);
@@ -1164,6 +1313,9 @@ static void sas_expander_release(struct device *dev)
        struct sas_rphy *rphy = dev_to_rphy(dev);
        struct sas_expander_device *edev = rphy_to_expander_device(rphy);
 
+       if (rphy->q)
+               blk_cleanup_queue(rphy->q);
+
        put_device(dev->parent);
        kfree(edev);
 }
@@ -1173,6 +1325,9 @@ static void sas_end_device_release(struct device *dev)
        struct sas_rphy *rphy = dev_to_rphy(dev);
        struct sas_end_device *edev = rphy_to_end_device(rphy);
 
+       if (rphy->q)
+               blk_cleanup_queue(rphy->q);
+
        put_device(dev->parent);
        kfree(edev);
 }
@@ -1191,6 +1346,7 @@ static void sas_rphy_initialize(struct sas_rphy *rphy)
 
 /**
  * sas_end_device_alloc - allocate an rphy for an end device
+ * @parent: which port
  *
  * Allocates an SAS remote PHY structure, connected to @parent.
  *
@@ -1212,11 +1368,12 @@ struct sas_rphy *sas_end_device_alloc(struct sas_port *parent)
        rdev->rphy.dev.release = sas_end_device_release;
        if (scsi_is_sas_expander_device(parent->dev.parent)) {
                struct sas_rphy *rphy = dev_to_rphy(parent->dev.parent);
-               sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d:%d",
-                       shost->host_no, rphy->scsi_target_id, parent->port_identifier);
+               dev_set_name(&rdev->rphy.dev, "end_device-%d:%d:%d",
+                            shost->host_no, rphy->scsi_target_id,
+                            parent->port_identifier);
        } else
-               sprintf(rdev->rphy.dev.bus_id, "end_device-%d:%d",
-                       shost->host_no, parent->port_identifier);
+               dev_set_name(&rdev->rphy.dev, "end_device-%d:%d",
+                            shost->host_no, parent->port_identifier);
        rdev->rphy.identify.device_type = SAS_END_DEVICE;
        sas_rphy_initialize(&rdev->rphy);
        transport_setup_device(&rdev->rphy.dev);
@@ -1227,6 +1384,8 @@ EXPORT_SYMBOL(sas_end_device_alloc);
 
 /**
  * sas_expander_alloc - allocate an rphy for an end device
+ * @parent: which port
+ * @type: SAS_EDGE_EXPANDER_DEVICE or SAS_FANOUT_EXPANDER_DEVICE
  *
  * Allocates an SAS remote PHY structure, connected to @parent.
  *
@@ -1254,8 +1413,8 @@ struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
        mutex_lock(&sas_host->lock);
        rdev->rphy.scsi_target_id = sas_host->next_expander_id++;
        mutex_unlock(&sas_host->lock);
-       sprintf(rdev->rphy.dev.bus_id, "expander-%d:%d",
-               shost->host_no, rdev->rphy.scsi_target_id);
+       dev_set_name(&rdev->rphy.dev, "expander-%d:%d",
+                    shost->host_no, rdev->rphy.scsi_target_id);
        rdev->rphy.identify.device_type = type;
        sas_rphy_initialize(&rdev->rphy);
        transport_setup_device(&rdev->rphy.dev);
@@ -1265,7 +1424,7 @@ struct sas_rphy *sas_expander_alloc(struct sas_port *parent,
 EXPORT_SYMBOL(sas_expander_alloc);
 
 /**
- * sas_rphy_add  --  add a SAS remote PHY to the device hierachy
+ * sas_rphy_add  -  add a SAS remote PHY to the device hierarchy
  * @rphy:      The remote PHY to be added
  *
  * Publishes a SAS remote PHY to the rest of the system.
@@ -1287,6 +1446,9 @@ int sas_rphy_add(struct sas_rphy *rphy)
                return error;
        transport_add_device(&rphy->dev);
        transport_configure_device(&rphy->dev);
+       if (sas_bsg_initialize(shost, rphy))
+               printk("fail to a bsg device %s\n", dev_name(&rphy->dev));
+
 
        mutex_lock(&sas_host->lock);
        list_add_tail(&rphy->list, &sas_host->rphy_list);
@@ -1309,8 +1471,8 @@ int sas_rphy_add(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_add);
 
 /**
- * sas_rphy_free  --  free a SAS remote PHY
- * @rphy       SAS remote PHY to free
+ * sas_rphy_free  -  free a SAS remote PHY
+ * @rphy: SAS remote PHY to free
  *
  * Frees the specified SAS remote PHY.
  *
@@ -1329,6 +1491,8 @@ void sas_rphy_free(struct sas_rphy *rphy)
        list_del(&rphy->list);
        mutex_unlock(&sas_host->lock);
 
+       sas_bsg_remove(shost, rphy);
+
        transport_destroy_device(dev);
 
        put_device(dev);
@@ -1336,7 +1500,7 @@ void sas_rphy_free(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_free);
 
 /**
- * sas_rphy_delete  --  remove and free SAS remote PHY
+ * sas_rphy_delete  -  remove and free SAS remote PHY
  * @rphy:      SAS remote PHY to remove and free
  *
  * Removes the specified SAS remote PHY and frees it.
@@ -1350,7 +1514,7 @@ sas_rphy_delete(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_delete);
 
 /**
- * sas_rphy_remove  --  remove SAS remote PHY
+ * sas_rphy_remove  -  remove SAS remote PHY
  * @rphy:      SAS remote phy to remove
  *
  * Removes the specified SAS remote PHY.
@@ -1381,7 +1545,7 @@ sas_rphy_remove(struct sas_rphy *rphy)
 EXPORT_SYMBOL(sas_rphy_remove);
 
 /**
- * scsi_is_sas_rphy  --  check if a struct device represents a SAS remote PHY
+ * scsi_is_sas_rphy  -  check if a struct device represents a SAS remote PHY
  * @dev:       device to check
  *
  * Returns:
@@ -1428,14 +1592,14 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
  */
 
 #define SETUP_TEMPLATE(attrb, field, perm, test)                       \
-       i->private_##attrb[count] = class_device_attr_##field;          \
+       i->private_##attrb[count] = dev_attr_##field;           \
        i->private_##attrb[count].attr.mode = perm;                     \
        i->attrb[count] = &i->private_##attrb[count];                   \
        if (test)                                                       \
                count++
 
 #define SETUP_TEMPLATE_RW(attrb, field, perm, test, ro_test, ro_perm)  \
-       i->private_##attrb[count] = class_device_attr_##field;          \
+       i->private_##attrb[count] = dev_attr_##field;           \
        i->private_##attrb[count].attr.mode = perm;                     \
        if (ro_test) {                                                  \
                i->private_##attrb[count].attr.mode = ro_perm;          \
@@ -1481,7 +1645,7 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
        SETUP_TEMPLATE(expander_attrs, expander_##field, S_IRUGO, 1)
 
 /**
- * sas_attach_transport  --  instantiate SAS transport template
+ * sas_attach_transport  -  instantiate SAS transport template
  * @ft:                SAS transport class function template
  */
 struct scsi_transport_template *
@@ -1592,7 +1756,7 @@ sas_attach_transport(struct sas_function_template *ft)
 EXPORT_SYMBOL(sas_attach_transport);
 
 /**
- * sas_release_transport  --  release SAS transport template instance
+ * sas_release_transport  -  release SAS transport template instance
  * @t:         transport template instance
  */
 void sas_release_transport(struct scsi_transport_template *t)