From 56dd2c0691a5a387b7b05835fe547dc6fade9407 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@us.ibm.com>
Date: Fri, 1 Oct 2010 13:55:47 -0700
Subject: [SCSI] libsas: Don't issue commands to devices that have been
hot-removed
sd will get hung up issuing commands to flush write cache if a SAS
device behind the expander is unplugged without warning. Change libsas
to reject commands to domain devices that have already gone away.
[maciej.trela@intel.com: removed setting ->gone in sas_deform_port() to
permit sync cache commands at module removal]
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Tested-by: Haipao Fan <haipao.fan@intel.com>
Signed-off-by: Maciej Trela <maciej.trela@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---
include/scsi/libsas.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'include/scsi/libsas.h')
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index d06e13be717b..3dec1949f69c 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -205,6 +205,7 @@ struct domain_device {
};
void *lldd_dev;
+ int gone;
};
struct sas_discovery_event {
--
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