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Merge of the trunk's r2582:

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Mainline commit 3c01b4f9fbb43fc911acd33ea7a14ea7a4f9866b:

From: Seokmann Ju <seokmann.ju@qlogic.com>
Date: Thu, 22 Jan 2009 09:45:38 -0800
Subject: [PATCH] [SCSI] qla2xxx: Add checks for a valid fcport in dev-loss-tmo/terminate_rport_io callbacks.

Commit f78badb1ae07e7f8b835ab2ea0b456ed3fc4caf4 ([SCSI] fc
transport: pre-emptively terminate i/o upon dev_loss_tmo timeout)
changed the callback semantics of dev_loss_tmo and
terminate_rport_io such that repeated calls could be made.  This
could result in the the driver using stale (NULLed-out, in
dev_loss_tmo) data from the rport.  Correct this by addint a
simple check to ensure a valid fcport is attached.

Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>




git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/2.0.0.x@2599 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2010-11-04 19:33:25 +00:00
parent 771dc27756
commit 1933ff7845
1 changed files with 6 additions and 0 deletions
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6
qla2x00t/qla_attr.c
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@@ -1598,6 +1598,9 @@ qla2x00_dev_loss_tmo_callbk(struct fc_rport *rport)
struct Scsi_Host *host = rport_to_shost(rport);
fc_port_t *fcport = *(fc_port_t **)rport->dd_data;
if (!fcport)
return;
qla2x00_abort_fcport_cmds(fcport);
/*
@@ -1615,6 +1618,9 @@ qla2x00_terminate_rport_io(struct fc_rport *rport)
{
fc_port_t *fcport = *(fc_port_t **)rport->dd_data;
if (!fcport)
return;
qla2x00_abort_fcport_cmds(fcport);
scsi_target_unblock(&rport->dev);
}