[SCSI] fix bsg queue oops with iscsi logout

Delay bsg unregistration, because we want to wait until all the request/cmds
have released their reference.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index ed83cdb..b9b09a7 100644 (file)
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -294,6 +294,7 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
        }
 
        if (sdev->request_queue) {
+               bsg_unregister_queue(sdev->request_queue);
                sdev->request_queue->queuedata = NULL;
                /* user context needed to free queue */
                scsi_free_queue(sdev->request_queue);
@@ -857,7 +858,6 @@ void __scsi_remove_device(struct scsi_device *sdev)
        if (scsi_device_set_state(sdev, SDEV_CANCEL) != 0)
                return;
 
-       bsg_unregister_queue(sdev->request_queue);
        class_device_unregister(&sdev->sdev_classdev);
        transport_remove_device(dev);
        device_del(dev);