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scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread

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commit 6a76550841d412330bd86aed3238d1888ba70f0e upstream.

Example trace record formatted with zfcpdbf from s390-tools:

Timestamp      : ...
Area           : REC
Subarea        : 00
Level          : 1
Exception      : -
CPU ID         : ..
Caller         : 0x...
Record ID      : 1                      ZFCP_DBF_REC_TRIG
Tag            : .......
LUN            : 0x...
WWPN           : 0x...
D_ID           : 0x...
Adapter status : 0x...
Port status    : 0x...
LUN status     : 0x...
Ready count    : 0x...
Running count  : 0x...
ERP want       : 0x0.                   ZFCP_ERP_ACTION_REOPEN_...
ERP need       : 0xc0                   ZFCP_ERP_ACTION_NONE

Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Cc: <stable@vger.kernel.org> #2.6.38+
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steffen Maier 2018-05-17 19:14:49 +02:00 • committed by Greg Kroah-Hartman
parent 1d7e23543a
commit f723101e1c
1 changed files with 5 additions and 2 deletions
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7
drivers/s390/scsi/zfcp_erp.c
View file

@ -314,8 +314,11 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
goto out;
}
if (!adapter->erp_thread)
return -EIO;
if (!adapter->erp_thread) {
need = ZFCP_ERP_ACTION_NONE; /* marker for trace */
retval = -EIO;
goto out;
}
need = zfcp_erp_required_act(want, adapter, port, sdev);
if (!need)