From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH v2] ahci_xgene: Fix the dma state machine lockup for the ATA_CMD_SMART PIO mode command. Date: Mon, 02 Feb 2015 20:07:53 +0300 Message-ID: <54CFAEE9.30002@cogentembedded.com> References: <1422878229-20488-1-git-send-email-stripathi@apm.com> <1422878229-20488-2-git-send-email-stripathi@apm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-la0-f46.google.com ([209.85.215.46]:57492 "EHLO mail-la0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754539AbbBBRH6 (ORCPT ); Mon, 2 Feb 2015 12:07:58 -0500 Received: by mail-la0-f46.google.com with SMTP id s18so43186267lam.5 for ; Mon, 02 Feb 2015 09:07:56 -0800 (PST) In-Reply-To: <1422878229-20488-2-git-send-email-stripathi@apm.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Suman Tripathi , olof@lixom.net, tj@kernel.org, arnd@arndb.de Cc: linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mlangsdo@redhat.com, jcm@redhat.com, patches@apm.com Hello. On 02/02/2015 02:57 PM, Suman Tripathi wrote: > This patch addresses the issue with ATA_CMD_SMART pio mode > command for enumeration and device detection with ATA devices. > The X-Gene AHCI controller has an errata in which it cannot clear > the BSY bit after the PIO setup FIS. The dma state machine enters > CMFatalErrorUpdate state and locks up. It is the same issue as > in the commit 2a0bdff6b958d1b2523d2754b6cd5e0ea4053016(fix the You forgot a space before '('. > dma state machine lockup for the IDENTIFY DEVICE PIO mode > command). Actually, the summary is "ahci_xgene: fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command.", i.e. yours is missing a prefix. [...] > Signed-off-by: Suman Tripathi > Reported-by: Mark Langsdorf MBR, Sergei