From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 20 Feb 2014 01:51:25 +0000 (-0800)
Subject: qla2xxx: Fix qlt_lport_register base_vha callback race
X-Git-Tag: v3.14-rc5~7^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddb95145a38eb37b236d4e00f43a75d067922dda;p=pandora-kernel.git

qla2xxx: Fix qlt_lport_register base_vha callback race

This patch closes a race between qlt_lport_register() and
tcm_qla2xxx callback logic by holding qla_tgt_mutex before
making the callback.

In order for this to work, the qlt_add_target() and
qlt_remove_target() code has been changed to avoid the
accessing qla_tgt_mutex + list_[add,del] for NPIV enabled
ports.

This bug introduced in v3.14-rc1 code with commit 49a47f2.

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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