fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / pci / hotplug / pci_hotplug_core.c

diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index c428290..f5d632e 100644 (file)
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -21,18 +21,17 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
- * Send feedback to <greg@kroah.com>
- *
- * Filesystem portion based on work done by Pat Mochel on ddfs/driverfs
+ * Send feedback to <kristen.c.accardi@intel.com>
  *
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/list.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
 #include <linux/pagemap.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
@@ -40,11 +39,8 @@
 #include <linux/mount.h>
 #include <linux/namei.h>
 #include <linux/pci.h>
+#include <linux/pci_hotplug.h>
 #include <asm/uaccess.h>
-#include <linux/kobject.h>
-#include <linux/sysfs.h>
-#include "pci_hotplug.h"
-
 
 #define MY_NAME        "pci_hotplug"
 
@@ -483,31 +479,95 @@ static int has_test_file (struct hotplug_slot *slot)
 
 static int fs_add_slot (struct hotplug_slot *slot)
 {
-       if (has_power_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+       int retval = 0;
 
-       if (has_attention_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+       if (has_power_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+               if (retval)
+                       goto exit_power;
+       }
 
-       if (has_latch_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+       if (has_attention_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_attention.attr);
+               if (retval)
+                       goto exit_attention;
+       }
 
-       if (has_adapter_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+       if (has_latch_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_latch.attr);
+               if (retval)
+                       goto exit_latch;
+       }
 
-       if (has_address_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+       if (has_adapter_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_presence.attr);
+               if (retval)
+                       goto exit_adapter;
+       }
 
-       if (has_max_bus_speed_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+       if (has_address_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_address.attr);
+               if (retval)
+                       goto exit_address;
+       }
+
+       if (has_max_bus_speed_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_max_bus_speed.attr);
+               if (retval)
+                       goto exit_max_speed;
+       }
+
+       if (has_cur_bus_speed_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_cur_bus_speed.attr);
+               if (retval)
+                       goto exit_cur_speed;
+       }
+
+       if (has_test_file(slot) == 0) {
+               retval = sysfs_create_file(&slot->kobj,
+                                          &hotplug_slot_attr_test.attr);
+               if (retval)
+                       goto exit_test;
+       }
 
+       goto exit;
+
+exit_test:
        if (has_cur_bus_speed_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
 
-       if (has_test_file(slot) == 0)
-               sysfs_create_file(&slot->kobj, &hotplug_slot_attr_test.attr);
+exit_cur_speed:
+       if (has_max_bus_speed_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
 
-       return 0;
+exit_max_speed:
+       if (has_address_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+
+exit_address:
+       if (has_adapter_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+
+exit_adapter:
+       if (has_latch_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+
+exit_latch:
+       if (has_attention_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+
+exit_attention:
+       if (has_power_file(slot) == 0)
+               sysfs_remove_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+exit_power:
+exit:
+       return retval;
 }
 
 static void fs_remove_slot (struct hotplug_slot *slot)
@@ -627,8 +687,11 @@ int pci_hp_deregister (struct hotplug_slot *slot)
  *
  * Returns 0 if successful, anything else for an error.
  */
-int pci_hp_change_slot_info (struct hotplug_slot *slot, struct hotplug_slot_info *info)
+int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot,
+                                        struct hotplug_slot_info *info)
 {
+       int retval;
+
        if ((slot == NULL) || (info == NULL))
                return -ENODEV;
 
@@ -637,32 +700,60 @@ int pci_hp_change_slot_info (struct hotplug_slot *slot, struct hotplug_slot_info
        * for the files referring to the fields that have now changed.
        */
        if ((has_power_file(slot) == 0) &&
-           (slot->info->power_status != info->power_status))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_power.attr);
+           (slot->info->power_status != info->power_status)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_power.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_attention_file(slot) == 0) &&
-           (slot->info->attention_status != info->attention_status))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_attention.attr);
+           (slot->info->attention_status != info->attention_status)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_attention.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_latch_file(slot) == 0) &&
-           (slot->info->latch_status != info->latch_status))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_latch.attr);
+           (slot->info->latch_status != info->latch_status)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_latch.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_adapter_file(slot) == 0) &&
-           (slot->info->adapter_status != info->adapter_status))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_presence.attr);
+           (slot->info->adapter_status != info->adapter_status)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_presence.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_address_file(slot) == 0) &&
-           (slot->info->address != info->address))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_address.attr);
+           (slot->info->address != info->address)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_address.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_max_bus_speed_file(slot) == 0) &&
-           (slot->info->max_bus_speed != info->max_bus_speed))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_max_bus_speed.attr);
+           (slot->info->max_bus_speed != info->max_bus_speed)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_max_bus_speed.attr);
+               if (retval)
+                       return retval;
+       }
 
        if ((has_cur_bus_speed_file(slot) == 0) &&
-           (slot->info->cur_bus_speed != info->cur_bus_speed))
-               sysfs_update_file(&slot->kobj, &hotplug_slot_attr_cur_bus_speed.attr);
+           (slot->info->cur_bus_speed != info->cur_bus_speed)) {
+               retval = sysfs_update_file(&slot->kobj,
+                                          &hotplug_slot_attr_cur_bus_speed.attr);
+               if (retval)
+                       return retval;
+       }
 
        memcpy (slot->info, info, sizeof (struct hotplug_slot_info));