From: Darrick J. Wong <djwong@us.ibm.com>
Date: Fri, 1 Oct 2010 20:55:47 +0000 (-0700)
Subject: [SCSI] libsas: Don't issue commands to devices that have been hot-removed
X-Git-Tag: v2.6.37-rc1~159^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56dd2c0691a5a387b7b05835fe547dc6fade9407;p=pandora-kernel.git

[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>
---

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