From: Hannes Reinecke <hare@suse.de>
Date: Fri, 22 Jan 2016 14:42:41 +0000 (+0100)
Subject: scsi_dh_rdac: always retry MODE SELECT on command lock violation
X-Git-Tag: v3.2.78~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=075ee9fb5e1ebfa5defc64746dfcbba28cf0ed5f;p=pandora-kernel.git

scsi_dh_rdac: always retry MODE SELECT on command lock violation

commit d2d06d4fe0f2cc2df9b17fefec96e6e1a1271d91 upstream.

If MODE SELECT returns with sense '05/91/36' (command lock violation)
it should always be retried without counting the number of retries.
During an HBA upgrade or similar circumstances one might see a flood
of MODE SELECT command from various HBAs, which will easily trigger
the sense code and exceed the retry count.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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