From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752956Ab1BPBMw (ORCPT ); Tue, 15 Feb 2011 20:12:52 -0500 Received: from kroah.org ([198.145.64.141]:45604 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933004Ab1BPAtG (ORCPT ); Tue, 15 Feb 2011 19:49:06 -0500 X-Mailbox-Line: From gregkh@clark.kroah.org Tue Feb 15 16:21:06 2011 Message-Id: <20110216002105.940420785@clark.kroah.org> User-Agent: quilt/0.48-11.2 Date: Tue, 15 Feb 2011 16:20:36 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Kashyap Desai , James Bottomley Subject: [patch 068/176] [SCSI] mpt2sas: fix internal device reset for older firmware prior to MPI Rev K In-Reply-To: <20110216002212.GA9246@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Kashyap, Desai commit efe82a16bc0f9f9e1fc8fa706eb0309fcd57770a upstream. The "internal device reset complete" event is not supported for older firmware prior to MPI Rev K We added a check in the driver so the "internal device reset" event is ignored for older firmware. When ignored, the tm_busy flag doesn't get set nor cleared. Without this fix, IO queues would be froozen indefinetly after the "internal device reset" event, as the "complete" event never sent to clear the flag. Signed-off-by: Kashyap Desai Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/mpt2sas/mpt2sas_scsih.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -4937,6 +4937,12 @@ _scsih_sas_device_status_change_event(st event_data); #endif + /* In MPI Revision K (0xC), the internal device reset complete was + * implemented, so avoid setting tm_busy flag for older firmware. + */ + if ((ioc->facts.HeaderVersion >> 8) < 0xC) + return; + if (event_data->ReasonCode != MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET && event_data->ReasonCode !=