From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:34020 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965349AbeGAQ1E (ORCPT ); Sun, 1 Jul 2018 12:27:04 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Steffen Maier , Benjamin Block , "Martin K. Petersen" Subject: [PATCH 4.9 063/101] scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread Date: Sun, 1 Jul 2018 18:21:49 +0200 Message-Id: <20180701160759.683484589@linuxfoundation.org> In-Reply-To: <20180701160757.138608453@linuxfoundation.org> References: <20180701160757.138608453@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Steffen Maier 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 Cc: #2.6.38+ Reviewed-by: Benjamin Block Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/s390/scsi/zfcp_erp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -314,8 +314,11 @@ static int zfcp_erp_action_enqueue(int w 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)