From 89d3cf6ac3cdc4f15a82709f8c78ed169a98be5b Mon Sep 17 00:00:00 2001
From: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Date: Wed, 16 Nov 2011 09:44:13 +0000
Subject: [SCSI] libsas: add mutex for SMP task execution

SAS does not tag SMP requests, and at least one lldd (isci) does not permit
more than one in-flight request at a time.

[jejb: fix sas_init_dev tab issues while we're at it]
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---
 include/scsi/libsas.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'include/scsi/libsas.h')

diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index f388ba536128..18704a2e4f07 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -153,6 +153,8 @@ struct expander_device {
 
 	struct ex_phy *ex_phy;
 	struct sas_port *parent_port;
+
+	struct mutex cmd_mutex;
 };
 
 /* ---------- SATA device ---------- */
-- 
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