Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

[pandora-kernel.git] / drivers / scsi / scsi_scan.c

diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 94e5167..05ebb9c 100644 (file)
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -74,7 +74,7 @@
 #define SCSI_SCAN_TARGET_PRESENT       1
 #define SCSI_SCAN_LUN_PRESENT          2
 
-static char *scsi_null_device_strs = "nullnullnullnull";
+static const char *scsi_null_device_strs = "nullnullnullnull";
 
 #define MAX_SCSI_LUNS  512
 
@@ -400,6 +400,36 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
        return found_target;
 }
 
+struct work_queue_wrapper {
+       struct work_struct      work;
+       struct scsi_target      *starget;
+};
+
+static void scsi_target_reap_work(void *data) {
+       struct work_queue_wrapper *wqw = (struct work_queue_wrapper *)data;
+       struct scsi_target *starget = wqw->starget;
+       struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+       unsigned long flags;
+
+       kfree(wqw);
+
+       spin_lock_irqsave(shost->host_lock, flags);
+
+       if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
+               list_del_init(&starget->siblings);
+               spin_unlock_irqrestore(shost->host_lock, flags);
+               transport_remove_device(&starget->dev);
+               device_del(&starget->dev);
+               transport_destroy_device(&starget->dev);
+               put_device(&starget->dev);
+               return;
+
+       }
+       spin_unlock_irqrestore(shost->host_lock, flags);
+
+       return;
+}
+
 /**
  * scsi_target_reap - check to see if target is in use and destroy if not
  *
@@ -411,19 +441,18 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
  */
 void scsi_target_reap(struct scsi_target *starget)
 {
-       struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
-       unsigned long flags;
-       spin_lock_irqsave(shost->host_lock, flags);
+       struct work_queue_wrapper *wqw = 
+               kzalloc(sizeof(struct work_queue_wrapper), GFP_ATOMIC);
 
-       if (--starget->reap_ref == 0 && list_empty(&starget->devices)) {
-               list_del_init(&starget->siblings);
-               spin_unlock_irqrestore(shost->host_lock, flags);
-               device_del(&starget->dev);
-               transport_unregister_device(&starget->dev);
-               put_device(&starget->dev);
+       if (!wqw) {
+               starget_printk(KERN_ERR, starget,
+                              "Failed to allocate memory in scsi_reap_target()\n");
                return;
        }
-       spin_unlock_irqrestore(shost->host_lock, flags);
+
+       INIT_WORK(&wqw->work, scsi_target_reap_work, wqw);
+       wqw->starget = starget;
+       schedule_work(&wqw->work);
 }
 
 /**