From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 20 Feb 2014 01:50:22 +0000 (-0800)
Subject: qla2xxx: Check + fail when npiv_vports_inuse exists in shutdown
X-Git-Tag: v3.14-rc5~7^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c231bdae1e7c8d366eeb133980b81dff2e1e809;p=pandora-kernel.git

qla2xxx: Check + fail when npiv_vports_inuse exists in shutdown

This patch adds an check to qlt_stop_phase1() to avoid shutdown
when the base_vha contains a non-zero fc_host->npiv_vports_inuse
count.

This includes holding qla_tgt_mutex in qlt_stop_phase1() between
the fc_host->npiv_vports_inuse check + setting of tgt->tgt_stop to
avoid a possible race between qlt_lport_register() -> tcm_qla2xxx
-> tcm_qla2xxx_lport_register_npiv_cb() calling fc_vport_create().

Cc: Sawan Chandak <sawan.chandak@qlogic.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Saurav Kashyap <saurav.kashyap@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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