[SCSI] mptfusion: block device when target is being removed by FW

Add support to set the sdev state to SDEV_BLOCK during device removal
to stop IOs comming to the deleting driver immediately.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 20 insertions, 5 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 1b7f550daebc..c20bbe45da82 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1075,6 +1075,19 @@ mptsas_target_reset(MPT_ADAPTER *ioc, u8 channel, u8 id)
         return 0;
 }
 
+static void
+mptsas_block_io_sdev(struct scsi_device *sdev, void *data)
+{
+        scsi_device_set_state(sdev, SDEV_BLOCK);
+}
+
+static void
+mptsas_block_io_starget(struct scsi_target *starget)
+{
+        if (starget)
+                starget_for_each_device(starget, NULL, mptsas_block_io_sdev);
+}
+
 /**
  * mptsas_target_reset_queue
  *
@@ -1098,10 +1111,11 @@ mptsas_target_reset_queue(MPT_ADAPTER *ioc,
         id = sas_event_data->TargetID;
         channel = sas_event_data->Bus;
 
-        if (!(vtarget = mptsas_find_vtarget(ioc, channel, id)))
-                return;
-
-        vtarget->deleted = 1; /* block IO */
+        vtarget = mptsas_find_vtarget(ioc, channel, id);
+        if (vtarget) {
+                mptsas_block_io_starget(vtarget->starget);
+                vtarget->deleted = 1; /* block IO */
+        }
 
         target_reset_list = kzalloc(sizeof(struct mptsas_target_reset_event),
             GFP_ATOMIC);
@@ -1868,7 +1882,8 @@ mptsas_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
         if (ioc->sas_discovery_quiesce_io)
                 return SCSI_MLQUEUE_HOST_BUSY;
 
-//      scsi_print_command(SCpnt);
+        if (ioc->debug_level & MPT_DEBUG_SCSI)
+                scsi_print_command(SCpnt);
 
         return mptscsih_qcmd(SCpnt,done);
 }