Removed kobjects from sdo and slave.
authorFlorian Pose <fp@igh-essen.com>
Thu, 12 Jun 2008 07:15:54 +0000
changeset 992 50a44cbd30af
parent 991 2548ca639b1f
child 993 8c32564252fd
Removed kobjects from sdo and slave.
TODO
master/fsm_coe.c
master/fsm_master.c
master/master.c
master/master.h
master/sdo.c
master/sdo.h
master/slave.c
master/slave.h
--- a/TODO	Wed Jun 11 15:37:38 2008 +0000
+++ b/TODO	Thu Jun 12 07:15:54 2008 +0000
@@ -25,6 +25,7 @@
 * List of commands that require a slave.
 * Remove configs_attached flag.
 * Remove EC_IOCTL_DOMAIN_COUNT.
+* Remove ATOMIC allocations.
 
 Future issues:
 
--- a/master/fsm_coe.c	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/fsm_coe.c	Thu Jun 12 07:15:54 2008 +0000
@@ -472,12 +472,7 @@
             return;
         }
 
-        if (ec_sdo_init(sdo, sdo_index, slave)) {
-            EC_ERR("Failed to init Sdo!\n");
-            fsm->state = ec_fsm_coe_error;
-            return;
-        }
-
+        ec_sdo_init(sdo, slave, sdo_index);
         list_add_tail(&sdo->list, &slave->sdo_dictionary);
     }
 
--- a/master/fsm_master.c	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/fsm_master.c	Thu Jun 12 07:15:54 2008 +0000
@@ -228,7 +228,7 @@
             ec_master_eoe_stop(master);
             ec_master_clear_eoe_handlers(master);
 #endif
-            ec_master_destroy_slaves(master);
+            ec_master_clear_slaves(master);
             master->configs_attached = 0;
 
             master->slave_count = datagram->working_counter;
@@ -246,21 +246,14 @@
                 if (!(slave = (ec_slave_t *) kmalloc(sizeof(ec_slave_t),
                                 GFP_ATOMIC))) {
                     EC_ERR("Failed to allocate slave %u!\n", i);
-                    ec_master_destroy_slaves(master);
+                    ec_master_clear_slaves(master);
                     master->scan_busy = 0;
                     wake_up_interruptible(&master->scan_queue);
                     fsm->state = ec_fsm_master_state_error;
                     return;
                 }
 
-                if (ec_slave_init(slave, master, i, i + 1)) {
-                    // freeing of "slave" already done
-                    ec_master_destroy_slaves(master);
-                    master->scan_busy = 0;
-                    wake_up_interruptible(&master->scan_queue);
-                    fsm->state = ec_fsm_master_state_error;
-                    return;
-                }
+                ec_slave_init(slave, master, i, i + 1);
 
                 // do not force reconfiguration in operation mode to avoid
                 // unnecesssary process data interruptions
--- a/master/master.c	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/master.c	Thu Jun 12 07:15:54 2008 +0000
@@ -230,7 +230,7 @@
     ec_master_clear_eoe_handlers(master);
 #endif
     ec_master_destroy_slave_configs(master);
-    ec_master_destroy_slaves(master);
+    ec_master_clear_slaves(master);
     ec_master_destroy_domains(master);
     ec_fsm_master_clear(&master->fsm);
     ec_datagram_clear(&master->fsm_datagram);
@@ -280,13 +280,14 @@
 
 /** Destroy all slaves.
  */
-void ec_master_destroy_slaves(ec_master_t *master)
+void ec_master_clear_slaves(ec_master_t *master)
 {
     ec_slave_t *slave, *next;
 
     list_for_each_entry_safe(slave, next, &master->slaves, list) {
         list_del(&slave->list);
-        ec_slave_destroy(slave);
+        ec_slave_clear(slave);
+        kfree(slave);
     }
 
     master->slave_count = 0;
@@ -412,7 +413,7 @@
     ec_master_eoe_stop(master);
 #endif
     ec_master_thread_stop(master);
-    ec_master_destroy_slaves(master);
+    ec_master_clear_slaves(master);
 }
 
 /*****************************************************************************/
--- a/master/master.h	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/master.h	Thu Jun 12 07:15:54 2008 +0000
@@ -195,7 +195,7 @@
 #ifdef EC_EOE
 void ec_master_clear_eoe_handlers(ec_master_t *);
 #endif
-void ec_master_destroy_slaves(ec_master_t *);
+void ec_master_clear_slaves(ec_master_t *);
 
 unsigned int ec_master_config_count(const ec_master_t *);
 const ec_slave_config_t *ec_master_get_config_const(
--- a/master/sdo.c	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/sdo.c	Thu Jun 12 07:15:54 2008 +0000
@@ -38,7 +38,7 @@
 
 /*****************************************************************************/
 
-#include <linux/module.h>
+#include <linux/slab.h>
 
 #include "master.h"
 
@@ -46,43 +46,12 @@
 
 /*****************************************************************************/
 
-ssize_t ec_show_sdo_attribute(struct kobject *, struct attribute *, char *);
-void ec_sdo_clear(struct kobject *);
-
-/*****************************************************************************/
-
-/** \cond */
-
-EC_SYSFS_READ_ATTR(info);
-
-static struct attribute *sdo_def_attrs[] = {
-    &attr_info,
-    NULL,
-};
-
-static struct sysfs_ops sdo_sysfs_ops = {
-    .show = &ec_show_sdo_attribute,
-    .store = NULL
-};
-
-static struct kobj_type ktype_ec_sdo = {
-    .release = ec_sdo_clear,
-    .sysfs_ops = &sdo_sysfs_ops,
-    .default_attrs = sdo_def_attrs
-};
-
-/** \endcond */
-
-/*****************************************************************************/
-
-/** Sdo constructor.
- *
- * \todo Turn parameters.
+/** Constructor.
  */
-int ec_sdo_init(
+void ec_sdo_init(
         ec_sdo_t *sdo, /**< Sdo. */
-        uint16_t index, /**< Sdo index. */
-        ec_slave_t *slave /**< Parent slave. */
+        ec_slave_t *slave, /**< Parent slave. */
+        uint16_t index /**< Sdo index. */
         )
 {
     sdo->slave = slave;
@@ -91,24 +60,6 @@
     sdo->name = NULL;
     sdo->max_subindex = 0;
     INIT_LIST_HEAD(&sdo->entries);
-
-    // Init kobject and add it to the hierarchy
-    memset(&sdo->kobj, 0x00, sizeof(struct kobject));
-    kobject_init(&sdo->kobj);
-    sdo->kobj.ktype = &ktype_ec_sdo;
-    sdo->kobj.parent = &slave->sdo_kobj;
-    if (kobject_set_name(&sdo->kobj, "%4X", sdo->index)) {
-        EC_ERR("Failed to set kobj name.\n");
-        kobject_put(&sdo->kobj);
-        return -1;
-    }
-    if (kobject_add(&sdo->kobj)) {
-        EC_ERR("Failed to add Sdo kobject.\n");
-        kobject_put(&sdo->kobj);
-        return -1;
-    }
-
-    return 0;
 }
 
 /*****************************************************************************/
@@ -117,7 +68,7 @@
  *
  * Clears and frees an Sdo object.
  */
-void ec_sdo_destroy(
+void ec_sdo_clear(
         ec_sdo_t *sdo /**< Sdo. */
         )
 {
@@ -130,27 +81,8 @@
         kfree(entry);
     }
 
-    // destroy self
-    kobject_del(&sdo->kobj);
-    kobject_put(&sdo->kobj);
-}
-
-/*****************************************************************************/
-
-/** Clear and free Sdo.
- *
- * This method is called by the kobject,
- * once there are no more references to it.
- */
-void ec_sdo_clear(
-        struct kobject *kobj /**< Sdo's kobject. */
-        )
-{
-    ec_sdo_t *sdo = container_of(kobj, ec_sdo_t, kobj);
-
-    if (sdo->name) kfree(sdo->name);
-
-    kfree(sdo);
+    if (sdo->name)
+        kfree(sdo->name);
 }
 
 /*****************************************************************************/
@@ -202,44 +134,3 @@
 }
 
 /*****************************************************************************/
-
-/** Print Sdo information to a buffer.
- * 
- * /return size of bytes written to buffer.
- */ 
-ssize_t ec_sdo_info(
-        ec_sdo_t *sdo, /**< Sdo. */
-        char *buffer /**< Target buffer. */
-        )
-{
-    off_t off = 0;
-
-    off += sprintf(buffer + off, "Index: 0x%04X\n", sdo->index);
-    off += sprintf(buffer + off, "Name: %s\n", sdo->name ? sdo->name : "");
-    off += sprintf(buffer + off, "Max subindex: %u\n", sdo->max_subindex);
-
-    return off;
-}
-
-/*****************************************************************************/
-
-/** Show a Sysfs attribute of an Sdo.
- * 
- * /return Number of bytes written to buffer.
- */ 
-ssize_t ec_show_sdo_attribute(
-        struct kobject *kobj, /**< kobject */
-        struct attribute *attr, /**< Requested attribute. */
-        char *buffer /**< Buffer to write the data in. */
-        )
-{
-    ec_sdo_t *sdo = container_of(kobj, ec_sdo_t, kobj);
-
-    if (attr == &attr_info) {
-        return ec_sdo_info(sdo, buffer);
-    }
-
-    return 0;
-}
-
-/*****************************************************************************/
--- a/master/sdo.h	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/sdo.h	Thu Jun 12 07:15:54 2008 +0000
@@ -42,7 +42,6 @@
 #define __EC_SDO_H__
 
 #include <linux/list.h>
-#include <linux/kobject.h>
 
 #include "globals.h"
 #include "sdo_entry.h"
@@ -52,7 +51,6 @@
 /** CANopen Sdo.
  */
 struct ec_sdo {
-    struct kobject kobj; /**< kobject. */
     struct list_head list; /**< List item. */
     ec_slave_t *slave; /**< Parent slave. */
     uint16_t index; /**< Sdo index. */
@@ -64,8 +62,8 @@
 
 /*****************************************************************************/
 
-int ec_sdo_init(ec_sdo_t *, uint16_t, ec_slave_t *);
-void ec_sdo_destroy(ec_sdo_t *);
+void ec_sdo_init(ec_sdo_t *, ec_slave_t *, uint16_t);
+void ec_sdo_clear(ec_sdo_t *);
 
 ec_sdo_entry_t *ec_sdo_get_entry(ec_sdo_t *, uint8_t);
 const ec_sdo_entry_t *ec_sdo_get_entry_const(const ec_sdo_t *, uint8_t);
--- a/master/slave.c	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/slave.c	Thu Jun 12 07:15:54 2008 +0000
@@ -54,50 +54,21 @@
 
 /*****************************************************************************/
 
-void ec_slave_clear(struct kobject *);
-void ec_slave_sdos_clear(struct kobject *);
-ssize_t ec_show_slave_attribute(struct kobject *, struct attribute *, char *);
 char *ec_slave_sii_string(ec_slave_t *, unsigned int);
 
 /*****************************************************************************/
 
-/** \cond */
-
-EC_SYSFS_READ_ATTR(info);
-
-static struct attribute *def_attrs[] = {
-    &attr_info,
-    NULL,
-};
-
-static struct sysfs_ops sysfs_ops = {
-    .show = ec_show_slave_attribute,
-};
-
-static struct kobj_type ktype_ec_slave = {
-    .release = ec_slave_clear,
-    .sysfs_ops = &sysfs_ops,
-    .default_attrs = def_attrs
-};
-
-static struct kobj_type ktype_ec_slave_sdos = {
-    .release = ec_slave_sdos_clear
-};
-
-/** \endcond */
-
-/*****************************************************************************/
-
 /**
    Slave constructor.
    \return 0 in case of success, else < 0
 */
 
-int ec_slave_init(ec_slave_t *slave, /**< EtherCAT slave */
-                  ec_master_t *master, /**< EtherCAT master */
-                  uint16_t ring_position, /**< ring position */
-                  uint16_t station_address /**< station address to configure */
-                  )
+void ec_slave_init(
+        ec_slave_t *slave, /**< EtherCAT slave */
+        ec_master_t *master, /**< EtherCAT master */
+        uint16_t ring_position, /**< ring position */
+        uint16_t station_address /**< station address to configure */
+        )
 {
     unsigned int i;
 
@@ -159,43 +130,6 @@
         slave->dl_signal[i] = 0;
         slave->sii.physical_layer[i] = 0xFF;
     }
-
-    // init kobject and add it to the hierarchy
-    memset(&slave->kobj, 0x00, sizeof(struct kobject));
-    kobject_init(&slave->kobj);
-    slave->kobj.ktype = &ktype_ec_slave;
-    slave->kobj.parent = &master->kobj;
-    if (kobject_set_name(&slave->kobj, "slave%03i", slave->ring_position)) {
-        EC_ERR("Failed to set kobject name.\n");
-        goto out_slave_put;
-    }
-    if (kobject_add(&slave->kobj)) {
-        EC_ERR("Failed to add slave's kobject.\n");
-        goto out_slave_put;
-    }
-
-    // init Sdo kobject and add it to the hierarchy
-    memset(&slave->sdo_kobj, 0x00, sizeof(struct kobject));
-    kobject_init(&slave->sdo_kobj);
-    slave->sdo_kobj.ktype = &ktype_ec_slave_sdos;
-    slave->sdo_kobj.parent = &slave->kobj;
-    if (kobject_set_name(&slave->sdo_kobj, "sdos")) {
-        EC_ERR("Failed to set kobject name.\n");
-        goto out_sdo_put;
-    }
-    if (kobject_add(&slave->sdo_kobj)) {
-        EC_ERR("Failed to add Sdos kobject.\n");
-        goto out_sdo_put;
-    }
-
-    return 0;
-
- out_sdo_put:
-    kobject_put(&slave->sdo_kobj);
-    kobject_del(&slave->kobj);
- out_slave_put:
-    kobject_put(&slave->kobj);
-    return -1;
 }
 
 /*****************************************************************************/
@@ -205,9 +139,11 @@
    Clears and frees a slave object.
 */
 
-void ec_slave_destroy(ec_slave_t *slave /**< EtherCAT slave */)
+void ec_slave_clear(ec_slave_t *slave /**< EtherCAT slave */)
 {
     ec_sdo_t *sdo, *next_sdo;
+    unsigned int i;
+    ec_pdo_t *pdo, *next_pdo;
 
     if (slave->config)
         ec_slave_config_detach(slave->config);
@@ -215,33 +151,9 @@
     // free all Sdos
     list_for_each_entry_safe(sdo, next_sdo, &slave->sdo_dictionary, list) {
         list_del(&sdo->list);
-        ec_sdo_destroy(sdo);
-    }
-
-    // free Sdo kobject
-    kobject_del(&slave->sdo_kobj);
-    kobject_put(&slave->sdo_kobj);
-
-    // destroy self
-    kobject_del(&slave->kobj);
-    kobject_put(&slave->kobj);
-}
-
-/*****************************************************************************/
-
-/**
-   Clear and free slave.
-   This method is called by the kobject,
-   once there are no more references to it.
-*/
-
-void ec_slave_clear(struct kobject *kobj /**< kobject of the slave */)
-{
-    ec_slave_t *slave;
-    ec_pdo_t *pdo, *next_pdo;
-    unsigned int i;
-
-    slave = container_of(kobj, ec_slave_t, kobj);
+        ec_sdo_clear(sdo);
+        kfree(sdo);
+    }
 
     // free all strings
     if (slave->sii.strings) {
@@ -262,18 +174,6 @@
 
     if (slave->sii_words)
         kfree(slave->sii_words);
-
-    kfree(slave);
-}
-
-/*****************************************************************************/
-
-/**
- * Sdo kobject clear method.
- */
-
-void ec_slave_sdos_clear(struct kobject *kobj /**< kobject for Sdos */)
-{
 }
 
 /*****************************************************************************/
@@ -607,239 +507,6 @@
 
 /*****************************************************************************/
 
-/** Outputs all information about a certain slave.
- */
-ssize_t ec_slave_info(const ec_slave_t *slave, /**< EtherCAT slave */
-        char *buffer /**< Output buffer */
-        )
-{
-    const ec_sync_t *sync;
-    const ec_pdo_t *pdo;
-    const ec_pdo_entry_t *pdo_entry;
-    int first, i;
-    char *large_buffer, *buf;
-    unsigned int size;
-
-    if (!(large_buffer = (char *) kmalloc(PAGE_SIZE * 2, GFP_KERNEL))) {
-        return -ENOMEM;
-    }
-
-    buf = large_buffer;
-
-    buf += sprintf(buf, "Ring position: %u\n",
-                   slave->ring_position);
-    buf += sprintf(buf, "State: ");
-    buf += ec_state_string(slave->current_state, buf);
-    buf += sprintf(buf, " (");
-    buf += ec_state_string(slave->requested_state, buf);
-    buf += sprintf(buf, ")\n");
-    buf += sprintf(buf, "Flags: %s\n\n", slave->error_flag ? "ERROR" : "ok");
-
-    buf += sprintf(buf, "Data link status:\n");
-    for (i = 0; i < 4; i++) {
-        buf += sprintf(buf, "  Port %u: Phy %u (",
-                i, slave->sii.physical_layer[i]);
-        switch (slave->sii.physical_layer[i]) {
-            case 0x00:
-                buf += sprintf(buf, "EBUS");
-                break;
-            case 0x01:
-                buf += sprintf(buf, "100BASE-TX");
-                break;
-            case 0x02:
-                buf += sprintf(buf, "100BASE-FX");
-                break;
-            default:
-                buf += sprintf(buf, "unknown");
-        }
-        buf += sprintf(buf, "), Link %s, Loop %s, %s\n",
-                       slave->dl_link[i] ? "up" : "down",
-                       slave->dl_loop[i] ? "closed" : "open",
-                       slave->dl_signal[i] ? "Signal detected" : "No signal");
-    }
-    buf += sprintf(buf, "\n");
-
-    if (slave->sii.alias)
-        buf += sprintf(buf, "Configured station alias:"
-                       " 0x%04X (%u)\n\n", slave->sii.alias, slave->sii.alias);
-
-    buf += sprintf(buf, "Identity:\n");
-    buf += sprintf(buf, "  Vendor ID: 0x%08X (%u)\n",
-                   slave->sii.vendor_id, slave->sii.vendor_id);
-    buf += sprintf(buf, "  Product code: 0x%08X (%u)\n",
-                   slave->sii.product_code, slave->sii.product_code);
-    buf += sprintf(buf, "  Revision number: 0x%08X (%u)\n",
-                   slave->sii.revision_number, slave->sii.revision_number);
-    buf += sprintf(buf, "  Serial number: 0x%08X (%u)\n\n",
-                   slave->sii.serial_number, slave->sii.serial_number);
-
-    if (slave->sii.mailbox_protocols) {
-        buf += sprintf(buf, "Mailboxes:\n");
-        buf += sprintf(buf, "  RX: 0x%04X/%u, TX: 0x%04X/%u\n",
-                slave->sii.rx_mailbox_offset, slave->sii.rx_mailbox_size,
-                slave->sii.tx_mailbox_offset, slave->sii.tx_mailbox_size);
-        buf += sprintf(buf, "  Supported protocols: ");
-
-        first = 1;
-        if (slave->sii.mailbox_protocols & EC_MBOX_AOE) {
-            buf += sprintf(buf, "AoE");
-            first = 0;
-        }
-        if (slave->sii.mailbox_protocols & EC_MBOX_EOE) {
-            if (!first) buf += sprintf(buf, ", ");
-            buf += sprintf(buf, "EoE");
-            first = 0;
-        }
-        if (slave->sii.mailbox_protocols & EC_MBOX_COE) {
-            if (!first) buf += sprintf(buf, ", ");
-            buf += sprintf(buf, "CoE");
-            first = 0;
-        }
-        if (slave->sii.mailbox_protocols & EC_MBOX_FOE) {
-            if (!first) buf += sprintf(buf, ", ");
-            buf += sprintf(buf, "FoE");
-            first = 0;
-        }
-        if (slave->sii.mailbox_protocols & EC_MBOX_SOE) {
-            if (!first) buf += sprintf(buf, ", ");
-            buf += sprintf(buf, "SoE");
-            first = 0;
-        }
-        if (slave->sii.mailbox_protocols & EC_MBOX_VOE) {
-            if (!first) buf += sprintf(buf, ", ");
-            buf += sprintf(buf, "VoE");
-        }
-        buf += sprintf(buf, "\n\n");
-    }
-
-    if (slave->sii.has_general) {
-        buf += sprintf(buf, "General:\n");
-
-        if (slave->sii.group)
-            buf += sprintf(buf, "  Group: %s\n", slave->sii.group);
-        if (slave->sii.image)
-            buf += sprintf(buf, "  Image: %s\n", slave->sii.image);
-        if (slave->sii.order)
-            buf += sprintf(buf, "  Order number: %s\n",
-                    slave->sii.order);
-        if (slave->sii.name)
-            buf += sprintf(buf, "  Name: %s\n", slave->sii.name);
-        if (slave->sii.mailbox_protocols & EC_MBOX_COE) {
-            buf += sprintf(buf, "  CoE details:\n");
-            buf += sprintf(buf, "    Enable Sdo: %s\n",
-                    slave->sii.coe_details.enable_sdo ? "yes" : "no");
-            buf += sprintf(buf, "    Enable Sdo Info: %s\n",
-                    slave->sii.coe_details.enable_sdo_info ? "yes" : "no");
-            buf += sprintf(buf, "    Enable Pdo Assign: %s\n",
-                    slave->sii.coe_details.enable_pdo_assign ? "yes" : "no");
-            buf += sprintf(buf, "    Enable Pdo Configuration: %s\n",
-                    slave->sii.coe_details.enable_pdo_configuration ?
-                    "yes" : "no");
-            buf += sprintf(buf, "    Enable Upload at startup: %s\n",
-                    slave->sii.coe_details.enable_upload_at_startup ?
-                    "yes" : "no");
-            buf += sprintf(buf, "    Enable Sdo complete access: %s\n",
-                    slave->sii.coe_details.enable_sdo_complete_access
-                    ? "yes" : "no");
-        }
-
-        buf += sprintf(buf, "  Flags:\n");
-        buf += sprintf(buf, "    Enable SafeOp: %s\n",
-                slave->sii.general_flags.enable_safeop ? "yes" : "no");
-        buf += sprintf(buf, "    Enable notLRW: %s\n",
-                slave->sii.general_flags.enable_not_lrw ? "yes" : "no");
-        buf += sprintf(buf, "  Current consumption: %i mA\n\n",
-                slave->sii.current_on_ebus);
-    }
-
-    if (slave->sii.sync_count) {
-        buf += sprintf(buf, "Sync managers / assigned Pdos:\n");
-
-        for (i = 0; i < slave->sii.sync_count; i++) {
-            sync = &slave->sii.syncs[i];
-            buf += sprintf(buf,
-                    "  SM%u: addr 0x%04X, size %u, control 0x%02X, %s\n",
-                    sync->index, sync->physical_start_address,
-                    sync->length, sync->control_register,
-                    sync->enable ? "enable" : "disable");
-
-            if (list_empty(&sync->pdos.list)) {
-                buf += sprintf(buf, "    No Pdos assigned.\n");
-            } else if (sync->assign_source != EC_ASSIGN_NONE) {
-                buf += sprintf(buf, "    Pdo assignment from ");
-                switch (sync->assign_source) {
-                    case EC_ASSIGN_SII:
-                        buf += sprintf(buf, "SII");
-                        break;
-                    case EC_ASSIGN_COE:
-                        buf += sprintf(buf, "CoE");
-                        break;
-                    case EC_ASSIGN_CUSTOM:
-                        buf += sprintf(buf, "application");
-                        break;
-                    default:
-                        buf += sprintf(buf, "?");
-                        break;
-                }
-                buf += sprintf(buf, ".\n");
-            }
-
-            list_for_each_entry(pdo, &sync->pdos.list, list) {
-                buf += sprintf(buf, "    %s 0x%04X \"%s\"\n",
-                        pdo->dir == EC_DIR_OUTPUT ? "RxPdo" : "TxPdo",
-                        pdo->index, pdo->name ? pdo->name : "???");
-
-                list_for_each_entry(pdo_entry, &pdo->entries, list) {
-                    buf += sprintf(buf,
-                            "      0x%04X:%02X, %u bit, \"%s\"\n",
-                            pdo_entry->index, pdo_entry->subindex,
-                            pdo_entry->bit_length,
-                            pdo_entry->name ? pdo_entry->name : "???");
-                }
-            }
-        }
-        buf += sprintf(buf, "\n");
-    }
-
-    // type-cast to avoid warnings on some compilers
-    if (!list_empty((struct list_head *) &slave->sii.pdos)) {
-        buf += sprintf(buf, "Available Pdos from SII:\n");
-
-        list_for_each_entry(pdo, &slave->sii.pdos, list) {
-            buf += sprintf(buf, "  %s 0x%04X \"%s\"",
-                    pdo->dir == EC_DIR_OUTPUT ? "RxPdo" : "TxPdo",
-                    pdo->index, pdo->name ? pdo->name : "???");
-            if (pdo->sync_index >= 0)
-                buf += sprintf(buf, ", default assignment: SM%u.\n",
-                        pdo->sync_index);
-            else
-                buf += sprintf(buf, ", no default assignment.\n");
-
-            list_for_each_entry(pdo_entry, &pdo->entries, list) {
-                buf += sprintf(buf, "    0x%04X:%02X, %u bit, \"%s\"\n",
-                        pdo_entry->index, pdo_entry->subindex,
-                        pdo_entry->bit_length,
-                        pdo_entry->name ? pdo_entry->name : "???");
-            }
-        }
-        buf += sprintf(buf, "\n");
-    }
-
-    size = buf - large_buffer;
-    if (size >= PAGE_SIZE) {
-        const char trunc[] = "\n---TRUNCATED---\n";
-        unsigned int len = strlen(trunc);
-        memcpy(large_buffer + PAGE_SIZE - len, trunc, len);
-    }
-
-    size = min(size, (unsigned int) PAGE_SIZE);
-    memcpy(buffer, large_buffer, size);
-    kfree(large_buffer);
-    return size;
-}
-
-/*****************************************************************************/
-
 /**
  * Writes SII contents to a slave.
  * \return Zero on success, otherwise error code.
@@ -898,27 +565,6 @@
 
 /*****************************************************************************/
 
-/**
-   Formats attribute data for SysFS read access.
-   \return number of bytes to read
-*/
-
-ssize_t ec_show_slave_attribute(struct kobject *kobj, /**< slave's kobject */
-                                struct attribute *attr, /**< attribute */
-                                char *buffer /**< memory to store data */
-                                )
-{
-    ec_slave_t *slave = container_of(kobj, ec_slave_t, kobj);
-
-    if (attr == &attr_info) {
-        return ec_slave_info(slave, buffer);
-    }
-
-    return 0;
-}
-
-/*****************************************************************************/
-
 /** Get the sync manager for either Rx- or Tx-Pdos.
  *
  * \todo This seems not to be correct in every case...
--- a/master/slave.h	Wed Jun 11 15:37:38 2008 +0000
+++ b/master/slave.h	Thu Jun 12 07:15:54 2008 +0000
@@ -99,7 +99,6 @@
 struct ec_slave
 {
     struct list_head list; /**< list item */
-    struct kobject kobj; /**< kobject */
     ec_master_t *master; /**< master owning the slave */
 
     // addresses
@@ -131,7 +130,6 @@
     // slave information interface
     ec_sii_t sii; /**< SII data. */
 
-    struct kobject sdo_kobj; /**< kobject for Sdos */
     struct list_head sdo_dictionary; /**< Sdo dictionary list */
     uint8_t sdo_dictionary_fetched; /**< dictionary has been fetched */
     unsigned long jiffies_preop; /**< time, the slave went to PREOP */
@@ -140,8 +138,8 @@
 /*****************************************************************************/
 
 // slave construction/destruction
-int ec_slave_init(ec_slave_t *, ec_master_t *, uint16_t, uint16_t);
-void ec_slave_destroy(ec_slave_t *);
+void ec_slave_init(ec_slave_t *, ec_master_t *, uint16_t, uint16_t);
+void ec_slave_clear(ec_slave_t *);
 
 void ec_slave_clear_sync_managers(ec_slave_t *);