s390/claw: switch to ccwgroup_create_dev

Switch to the new ccwgroup_create_dev interface. Also wrap device
attributes in a struct device_type and let the driver core create
these attributes automagically.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 54 insertions, 78 deletions

diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 4c3d4f675149..f7e7dcd74817 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -230,8 +230,6 @@ static ssize_t claw_rbuff_show(struct device *dev,
 static ssize_t claw_rbuff_write(struct device *dev,
         struct device_attribute *attr,
         const char *buf, size_t count);
-static int claw_add_files(struct device *dev);
-static void claw_remove_files(struct device *dev);
 
 /*   Functions for System Validate  */
 static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw);
@@ -266,7 +264,7 @@ static struct ccwgroup_driver claw_group_driver = {
         },
         .max_slaves  = 2,
         .driver_id   = 0xC3D3C1E6,
-        .probe       = claw_probe,
+        .setup       = claw_probe,
         .remove      = claw_remove_device,
         .set_online  = claw_new_device,
         .set_offline = claw_shutdown_device,
@@ -290,17 +288,14 @@ static struct ccw_driver claw_ccw_driver = {
         .int_class = IOINT_CLW,
 };
 
-static ssize_t
-claw_driver_group_store(struct device_driver *ddrv, const char *buf,
-                        size_t count)
+static ssize_t claw_driver_group_store(struct device_driver *ddrv,
+                                       const char *buf, size_t count)
 {
         int err;
-        err = ccwgroup_create_from_string(claw_root_dev,
-                                          claw_group_driver.driver_id,
-                                          &claw_ccw_driver, 2, buf);
+        err = ccwgroup_create_dev(claw_root_dev, claw_group_driver.driver_id,
+                                  &claw_group_driver, 2, buf);
         return err ? err : count;
 }
-
 static DRIVER_ATTR(group, 0200, NULL, claw_driver_group_store);
 
 static struct attribute *claw_group_attrs[] = {
@@ -321,60 +316,6 @@ static const struct attribute_group *claw_group_attr_groups[] = {
 *       Key functions
 */
 
-/*----------------------------------------------------------------*
- *   claw_probe                                                   *
- *      this function is called for each CLAW device.             *
- *----------------------------------------------------------------*/
-static int
-claw_probe(struct ccwgroup_device *cgdev)
-{
-        int             rc;
-        struct claw_privbk *privptr=NULL;
-
-        CLAW_DBF_TEXT(2, setup, "probe");
-        if (!get_device(&cgdev->dev))
-                return -ENODEV;
-        privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL);
-        dev_set_drvdata(&cgdev->dev, privptr);
-        if (privptr == NULL) {
-                probe_error(cgdev);
-                put_device(&cgdev->dev);
-                CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM);
-                return -ENOMEM;
-        }
-        privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
-        privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL);
-        if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) {
-                probe_error(cgdev);
-                put_device(&cgdev->dev);
-                CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM);
-                return -ENOMEM;
-        }
-        memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8);
-        memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8);
-        memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8);
-        privptr->p_env->packing = 0;
-        privptr->p_env->write_buffers = 5;
-        privptr->p_env->read_buffers = 5;
-        privptr->p_env->read_size = CLAW_FRAME_SIZE;
-        privptr->p_env->write_size = CLAW_FRAME_SIZE;
-        rc = claw_add_files(&cgdev->dev);
-        if (rc) {
-                probe_error(cgdev);
-                put_device(&cgdev->dev);
-                dev_err(&cgdev->dev, "Creating the /proc files for a new"
-                " CLAW device failed\n");
-                CLAW_DBF_TEXT_(2, setup, "probex%d", rc);
-                return rc;
-        }
-        privptr->p_env->p_priv = privptr;
-        cgdev->cdev[0]->handler = claw_irq_handler;
-        cgdev->cdev[1]->handler = claw_irq_handler;
-        CLAW_DBF_TEXT(2, setup, "prbext 0");
-
-        return 0;
-}  /*  end of claw_probe       */
-
 /*-------------------------------------------------------------------*
  *   claw_tx                                                         *
  *-------------------------------------------------------------------*/
@@ -3090,7 +3031,6 @@ claw_remove_device(struct ccwgroup_device *cgdev)
         dev_info(&cgdev->dev, " will be removed.\n");
         if (cgdev->state == CCWGROUP_ONLINE)
                 claw_shutdown_device(cgdev);
-        claw_remove_files(&cgdev->dev);
         kfree(priv->p_mtc_envelope);
         priv->p_mtc_envelope=NULL;
         kfree(priv->p_env);
@@ -3318,7 +3258,6 @@ claw_rbuff_write(struct device *dev, struct device_attribute *attr,
         CLAW_DBF_TEXT_(2, setup, "RB=%d", p_env->read_buffers);
         return count;
 }
-
 static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write);
 
 static struct attribute *claw_attr[] = {
@@ -3329,24 +3268,61 @@ static struct attribute *claw_attr[] = {
         &dev_attr_host_name.attr,
         NULL,
 };
-
 static struct attribute_group claw_attr_group = {
         .attrs = claw_attr,
 };
+static const struct attribute_group *claw_attr_groups[] = {
+        &claw_attr_group,
+        NULL,
+};
+static const struct device_type claw_devtype = {
+        .name = "claw",
+        .groups = claw_attr_groups,
+};
 
-static int
-claw_add_files(struct device *dev)
+/*----------------------------------------------------------------*
+ *   claw_probe                                                   *
+ *      this function is called for each CLAW device.             *
+ *----------------------------------------------------------------*/
+static int claw_probe(struct ccwgroup_device *cgdev)
 {
-        CLAW_DBF_TEXT(2, setup, "add_file");
-        return sysfs_create_group(&dev->kobj, &claw_attr_group);
-}
+        struct claw_privbk *privptr = NULL;
 
-static void
-claw_remove_files(struct device *dev)
-{
-        CLAW_DBF_TEXT(2, setup, "rem_file");
-        sysfs_remove_group(&dev->kobj, &claw_attr_group);
-}
+        CLAW_DBF_TEXT(2, setup, "probe");
+        if (!get_device(&cgdev->dev))
+                return -ENODEV;
+        privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL);
+        dev_set_drvdata(&cgdev->dev, privptr);
+        if (privptr == NULL) {
+                probe_error(cgdev);
+                put_device(&cgdev->dev);
+                CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM);
+                return -ENOMEM;
+        }
+        privptr->p_mtc_envelope = kzalloc(MAX_ENVELOPE_SIZE, GFP_KERNEL);
+        privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL);
+        if ((privptr->p_mtc_envelope == NULL) || (privptr->p_env == NULL)) {
+                probe_error(cgdev);
+                put_device(&cgdev->dev);
+                CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM);
+                return -ENOMEM;
+        }
+        memcpy(privptr->p_env->adapter_name, WS_NAME_NOT_DEF, 8);
+        memcpy(privptr->p_env->host_name, WS_NAME_NOT_DEF, 8);
+        memcpy(privptr->p_env->api_type, WS_NAME_NOT_DEF, 8);
+        privptr->p_env->packing = 0;
+        privptr->p_env->write_buffers = 5;
+        privptr->p_env->read_buffers = 5;
+        privptr->p_env->read_size = CLAW_FRAME_SIZE;
+        privptr->p_env->write_size = CLAW_FRAME_SIZE;
+        privptr->p_env->p_priv = privptr;
+        cgdev->cdev[0]->handler = claw_irq_handler;
+        cgdev->cdev[1]->handler = claw_irq_handler;
+        cgdev->dev.type = &claw_devtype;
+        CLAW_DBF_TEXT(2, setup, "prbext 0");
+
+        return 0;
+}  /*  end of claw_probe       */
 
 /*--------------------------------------------------------------------*
 *    claw_init  and cleanup                                           *