return name;
}
+static struct {
+ enum scsi_host_state value;
+ char *name;
+} shost_states[] = {
+ { SHOST_CREATED, "created" },
+ { SHOST_RUNNING, "running" },
+ { SHOST_CANCEL, "cancel" },
+ { SHOST_DEL, "deleted" },
+ { SHOST_RECOVERY, "recovery" },
+ { SHOST_CANCEL_RECOVERY, "cancel/recovery" },
+ { SHOST_DEL_RECOVERY, "deleted/recovery", },
+};
+const char *scsi_host_state_name(enum scsi_host_state state)
+{
+ int i;
+ char *name = NULL;
+
+ for (i = 0; i < sizeof(shost_states)/sizeof(shost_states[0]); i++) {
+ if (shost_states[i].value == state) {
+ name = shost_states[i].name;
+ break;
+ }
+ }
+ return name;
+}
+
static int check_set(unsigned int *val, char *src)
{
char *last;
};
static CLASS_DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
+static ssize_t
+store_shost_state(struct class_device *class_dev, const char *buf, size_t count)
+{
+ int i;
+ struct Scsi_Host *shost = class_to_shost(class_dev);
+ enum scsi_host_state state = 0;
+
+ for (i = 0; i < sizeof(shost_states)/sizeof(shost_states[0]); i++) {
+ const int len = strlen(shost_states[i].name);
+ if (strncmp(shost_states[i].name, buf, len) == 0 &&
+ buf[len] == '\n') {
+ state = shost_states[i].value;
+ break;
+ }
+ }
+ if (!state)
+ return -EINVAL;
+
+ if (scsi_host_set_state(shost, state))
+ return -EINVAL;
+ return count;
+}
+
+static ssize_t
+show_shost_state(struct class_device *class_dev, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(class_dev);
+ const char *name = scsi_host_state_name(shost->shost_state);
+
+ if (!name)
+ return -EINVAL;
+
+ return snprintf(buf, 20, "%s\n", name);
+}
+
+static CLASS_DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
+
shost_rd_attr(unique_id, "%u\n");
shost_rd_attr(host_busy, "%hu\n");
shost_rd_attr(cmd_per_lun, "%hd\n");
&class_device_attr_unchecked_isa_dma,
&class_device_attr_proc_name,
&class_device_attr_scan,
+ &class_device_attr_state,
NULL
};
error = attr_add(&sdev->sdev_gendev,
sdev->host->hostt->sdev_attrs[i]);
if (error) {
- scsi_remove_device(sdev);
+ __scsi_remove_device(sdev);
goto out;
}
}
scsi_sysfs_sdev_attrs[i]);
error = device_create_file(&sdev->sdev_gendev, attr);
if (error) {
- scsi_remove_device(sdev);
+ __scsi_remove_device(sdev);
goto out;
}
}
return error;
}
+void __scsi_remove_device(struct scsi_device *sdev)
+{
+ struct device *dev = &sdev->sdev_gendev;
+
+ if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
+ return;
+
+ class_device_unregister(&sdev->sdev_classdev);
+ transport_remove_device(dev);
+ device_del(dev);
+ scsi_device_set_state(sdev, SDEV_DEL);
+ if (sdev->host->hostt->slave_destroy)
+ sdev->host->hostt->slave_destroy(sdev);
+ transport_destroy_device(dev);
+ put_device(dev);
+}
+
/**
* scsi_remove_device - unregister a device from the scsi bus
* @sdev: scsi_device to unregister
struct Scsi_Host *shost = sdev->host;
down(&shost->scan_mutex);
- if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
- goto out;
-
- class_device_unregister(&sdev->sdev_classdev);
- device_del(&sdev->sdev_gendev);
- scsi_device_set_state(sdev, SDEV_DEL);
- if (sdev->host->hostt->slave_destroy)
- sdev->host->hostt->slave_destroy(sdev);
- transport_unregister_device(&sdev->sdev_gendev);
- put_device(&sdev->sdev_gendev);
-out:
+ __scsi_remove_device(sdev);
up(&shost->scan_mutex);
}
EXPORT_SYMBOL(scsi_remove_device);
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
unsigned long flags;
- struct scsi_device *sdev, *tmp;
+ struct scsi_device *sdev;
spin_lock_irqsave(shost->host_lock, flags);
starget->reap_ref++;
- list_for_each_entry_safe(sdev, tmp, &shost->__devices, siblings) {
+ restart:
+ list_for_each_entry(sdev, &shost->__devices, siblings) {
if (sdev->channel != starget->channel ||
- sdev->id != starget->id)
+ sdev->id != starget->id ||
+ sdev->sdev_state == SDEV_DEL)
continue;
spin_unlock_irqrestore(shost->host_lock, flags);
scsi_remove_device(sdev);
spin_lock_irqsave(shost->host_lock, flags);
+ goto restart;
}
spin_unlock_irqrestore(shost->host_lock, flags);
scsi_target_reap(starget);