[SCSI] fix q->lock not held warning when target is busy

We cannot call blk_plug_device from scsi_target_queue_ready
because the q lock is not held. And we do not need to call
it from there because when we return 0, the scsi_request_fn
not_ready handling will plug the queue for us if needed.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index d1cb64ad1a3f..bb218c8b6e98 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1291,10 +1291,8 @@ static inline int scsi_target_queue_ready(struct Scsi_Host *shost,
                 if (--starget->target_blocked == 0) {
                         SCSI_LOG_MLQUEUE(3, starget_printk(KERN_INFO, starget,
                                          "unblocking target at zero depth\n"));
-                } else {
-                        blk_plug_device(sdev->request_queue);
+                } else
                         return 0;
-                }
         }
 
         if (scsi_target_is_busy(starget)) {