scsi_sysfs.c (b485462aca7df4e32bcf7efb6f84a69e8b640243) scsi_sysfs.c (3b661a92e869ebe2358de8f4b3230ad84f7fce51)
1/*
2 * scsi_sysfs.c
3 *
4 * SCSI sysfs interface routines.
5 *
6 * Created to pull SCSI mid layer sysfs routines into one file.
7 */
8

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1000
1001static void __scsi_remove_target(struct scsi_target *starget)
1002{
1003 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1004 unsigned long flags;
1005 struct scsi_device *sdev;
1006
1007 spin_lock_irqsave(shost->host_lock, flags);
1/*
2 * scsi_sysfs.c
3 *
4 * SCSI sysfs interface routines.
5 *
6 * Created to pull SCSI mid layer sysfs routines into one file.
7 */
8

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1000
1001static void __scsi_remove_target(struct scsi_target *starget)
1002{
1003 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1004 unsigned long flags;
1005 struct scsi_device *sdev;
1006
1007 spin_lock_irqsave(shost->host_lock, flags);
1008 starget->reap_ref++;
1009 restart:
1010 list_for_each_entry(sdev, &shost->__devices, siblings) {
1011 if (sdev->channel != starget->channel ||
1012 sdev->id != starget->id ||
1013 scsi_device_get(sdev))
1014 continue;
1015 spin_unlock_irqrestore(shost->host_lock, flags);
1016 scsi_remove_device(sdev);
1017 scsi_device_put(sdev);
1018 spin_lock_irqsave(shost->host_lock, flags);
1019 goto restart;
1020 }
1021 spin_unlock_irqrestore(shost->host_lock, flags);
1008 restart:
1009 list_for_each_entry(sdev, &shost->__devices, siblings) {
1010 if (sdev->channel != starget->channel ||
1011 sdev->id != starget->id ||
1012 scsi_device_get(sdev))
1013 continue;
1014 spin_unlock_irqrestore(shost->host_lock, flags);
1015 scsi_remove_device(sdev);
1016 scsi_device_put(sdev);
1017 spin_lock_irqsave(shost->host_lock, flags);
1018 goto restart;
1019 }
1020 spin_unlock_irqrestore(shost->host_lock, flags);
1022 scsi_target_reap(starget);
1023}
1024
1021}
1022
1025static int __remove_child (struct device * dev, void * data)
1026{
1027 if (scsi_is_target_device(dev))
1028 __scsi_remove_target(to_scsi_target(dev));
1029 return 0;
1030}
1031
1032/**
1033 * scsi_remove_target - try to remove a target and all its devices
1034 * @dev: generic starget or parent of generic stargets to be removed
1035 *
1036 * Note: This is slightly racy. It is possible that if the user
1037 * requests the addition of another device then the target won't be
1038 * removed.
1039 */
1040void scsi_remove_target(struct device *dev)
1041{
1023/**
1024 * scsi_remove_target - try to remove a target and all its devices
1025 * @dev: generic starget or parent of generic stargets to be removed
1026 *
1027 * Note: This is slightly racy. It is possible that if the user
1028 * requests the addition of another device then the target won't be
1029 * removed.
1030 */
1031void scsi_remove_target(struct device *dev)
1032{
1042 if (scsi_is_target_device(dev)) {
1043 __scsi_remove_target(to_scsi_target(dev));
1044 return;
1033 struct Scsi_Host *shost = dev_to_shost(dev->parent);
1034 struct scsi_target *starget, *found;
1035 unsigned long flags;
1036
1037 restart:
1038 found = NULL;
1039 spin_lock_irqsave(shost->host_lock, flags);
1040 list_for_each_entry(starget, &shost->__targets, siblings) {
1041 if (starget->state == STARGET_DEL)
1042 continue;
1043 if (starget->dev.parent == dev || &starget->dev == dev) {
1044 found = starget;
1045 found->reap_ref++;
1046 break;
1047 }
1045 }
1048 }
1049 spin_unlock_irqrestore(shost->host_lock, flags);
1046
1050
1047 get_device(dev);
1048 device_for_each_child(dev, NULL, __remove_child);
1049 put_device(dev);
1051 if (found) {
1052 __scsi_remove_target(found);
1053 scsi_target_reap(found);
1054 /* in the case where @dev has multiple starget children,
1055 * continue removing.
1056 *
1057 * FIXME: does such a case exist?
1058 */
1059 goto restart;
1060 }
1050}
1051EXPORT_SYMBOL(scsi_remove_target);
1052
1053int scsi_register_driver(struct device_driver *drv)
1054{
1055 drv->bus = &scsi_bus_type;
1056
1057 return driver_register(drv);

--- 74 unchanged lines hidden --- 		1061}
1062EXPORT_SYMBOL(scsi_remove_target);
1063
1064int scsi_register_driver(struct device_driver *drv)
1065{
1066 drv->bus = &scsi_bus_type;
1067
1068 return driver_register(drv);

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