From 64e155adc250ab68255b761c1faa77799aa1e41a Mon Sep 17 00:00:00 2001
From: "Kashyap, Desai" <kashyap.desai@lsi.com>
Date: Wed, 16 Dec 2009 19:02:29 +0530
Subject: [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>
---
 drivers/message/fusion/mptsas.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

(limited to 'drivers/message/fusion')

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 1b7f550daeb..c20bbe45da8 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);
 }
-- 
cgit v1.2.3-70-g09d2