sd, sr: fix Driver 'sd' needs updating message

If a SCSI ULD driver sets blk_queue_prep_rq(), it should clean it
up itself on remove(), and not from the bus callbacks. This
removes the need to hook into bus->remove(), which should not
be used at the same time as driver->remove().

[jejb: fix sdkp initialisation problem due to mismerge]
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

6 files changed, 4 insertions, 18 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 30f3275e119e..f3c40898fc7d 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1207,6 +1207,7 @@ int scsi_prep_fn(struct request_queue *q, struct request *req)
                 ret = scsi_setup_blk_pc_cmnd(sdev, req);
         return scsi_prep_return(q, req, ret);
 }
+EXPORT_SYMBOL(scsi_prep_fn);
 
 /*
  * scsi_dev_queue_ready: if we can send requests to sdev, return 1 else
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 00264aab8c8a..021e503c8c44 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -87,7 +87,6 @@ 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 *);
 extern struct kmem_cache *scsi_sdb_cache;
 
 /* scsi_proc.c */
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index fa4711d12744..91482f2dcc50 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -420,29 +420,12 @@ 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,
 };
 EXPORT_SYMBOL_GPL(scsi_bus_type);
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e4ef11af18a2..5616cd780ff3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2123,6 +2123,7 @@ static int sd_remove(struct device *dev)
 
         async_synchronize_full();
         sdkp = dev_get_drvdata(dev);
+        blk_queue_prep_rq(sdkp->device->request_queue, scsi_prep_fn);
         device_del(&sdkp->dev);
         del_gendisk(sdkp->disk);
         sd_shutdown(dev);
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index cd350dfc1216..cce0fe4c8a3b 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -881,6 +881,7 @@ static int sr_remove(struct device *dev)
 {
         struct scsi_cd *cd = dev_get_drvdata(dev);
 
+        blk_queue_prep_rq(cd->device->request_queue, scsi_prep_fn);
         del_gendisk(cd->disk);
 
         mutex_lock(&sr_ref_mutex);
diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h
index 1f5ca7f62116..9fd6702f02e2 100644
--- a/include/scsi/scsi_driver.h
+++ b/include/scsi/scsi_driver.h
@@ -32,5 +32,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req);
 int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req);
 int scsi_prep_state_check(struct scsi_device *sdev, struct request *req);
 int scsi_prep_return(struct request_queue *q, struct request *req, int ret);
+int scsi_prep_fn(struct request_queue *, struct request *);
 
 #endif /* _SCSI_SCSI_DRIVER_H */