3 files changed, 21 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 8df8267ce316..60f77c4b3946 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1346,7 +1346,7 @@ int scsi_prep_return(struct request_queue *q, struct request *req, int ret)
 }
 EXPORT_SYMBOL(scsi_prep_return);
 
-static int scsi_prep_fn(struct request_queue *q, struct request *req)
+int scsi_prep_fn(struct request_queue *q, struct request *req)
 {
         struct scsi_device *sdev = q->queuedata;
         int ret = BLKPREP_KILL;
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index ee8efe849bf4..1de52b6ded40 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -73,6 +73,9 @@ extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
 extern void scsi_free_queue(struct request_queue *q);
 extern int scsi_init_queue(void);
 extern void scsi_exit_queue(void);
+struct request_queue;
+struct request;
+extern int scsi_prep_fn(struct request_queue *, struct request *);
 
 /* scsi_proc.c */
 #ifdef CONFIG_SCSI_PROC_FS
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index f374fdcb6815..00b386677392 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -373,12 +373,29 @@ static int scsi_bus_resume(struct device * dev)
         return err;
 }
 
+static int scsi_bus_remove(struct device *dev)
+{
+        struct device_driver *drv = dev->driver;
+        struct scsi_device *sdev = to_scsi_device(dev);
+        int err = 0;
+
+        /* reset the prep_fn back to the default since the
+         * driver may have altered it and it's being removed */
+        blk_queue_prep_rq(sdev->request_queue, scsi_prep_fn);
+
+        if (drv && drv->remove)
+                err = drv->remove(dev);
+
+        return 0;
+}
+
 struct bus_type scsi_bus_type = {
         .name           = "scsi",
         .match          = scsi_bus_match,
         .uevent         = scsi_bus_uevent,
         .suspend        = scsi_bus_suspend,
         .resume         = scsi_bus_resume,
+        .remove         = scsi_bus_remove,
 };
 
 int scsi_sysfs_register(void)