From patchwork Fri Oct 11 13:15:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ludovic BARRE X-Patchwork-Id: 11185463 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9619F76 for ; Fri, 11 Oct 2019 13:15:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 76DA8214E0 for ; Fri, 11 Oct 2019 13:15:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="uIUnsRMl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728350AbfJKNPl (ORCPT ); Fri, 11 Oct 2019 09:15:41 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:53445 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728245AbfJKNPk (ORCPT ); Fri, 11 Oct 2019 09:15:40 -0400 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id x9BD6lxu021879; Fri, 11 Oct 2019 15:15:30 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=STMicroelectronics; bh=2OJ63JRDHcE35+LH+1/BTSgThb8JET2V1q7cuqnG+F0=; b=uIUnsRMlUIA++sDY+nCBcDNNH3YlJtiiOVOt88abPsuDz0wB4V8cMuAvWxiNr8gvmhxi 9JbYbEt9W5/ZPNOT5MwG5dr9hDJkuTKzTpt5epXeDRv8YKRFeKYGgZ4EqcvsYdPQTWKA d9rIqaKqB49S0Vd4TVRJgdYwnK5t6OssiS0n5SCbScCRiOVcA+pjbv7GL8tHnbh+fdlA fm902q1QSvLjSFtbW6QB4WSxefLFgvsr+9O5sj+iAMp2zSquHsnmStl4CZiOPxALkr5H bZ+UgYGGNN7bVY+JlUxN52NlvhotyLvTAKd5pEEiFb2PUqHMNIvVqKv9a17svKRncnpr +w== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2vegxw9yag-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2019 15:15:30 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id CA71310002A; Fri, 11 Oct 2019 15:15:29 +0200 (CEST) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id B5F6B2BEC72; Fri, 11 Oct 2019 15:15:29 +0200 (CEST) Received: from SAFEX1HUBCAS23.st.com (10.75.90.46) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 11 Oct 2019 15:15:29 +0200 Received: from lmecxl0923.lme.st.com (10.48.0.237) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.439.0; Fri, 11 Oct 2019 15:15:29 +0200 From: Ludovic Barre To: Ulf Hansson , Rob Herring CC: , Maxime Coquelin , Alexandre Torgue , , , , , , Ludovic Barre Subject: [PATCH 0/2] mmc: add unstuck function if host is in deadlock state Date: Fri, 11 Oct 2019 15:15:00 +0200 Message-ID: <20191011131502.29579-1-ludovic.Barre@st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.48.0.237] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,1.0.8 definitions=2019-10-11_08:2019-10-10,2019-10-11 signatures=0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Ludovic Barre As discussed in this thread: https://patchwork.kernel.org/patch/10786421/ After a request, the host could be in deadlock state, and waiting for a specific action to unstuck the hardware block before resending a new command. This series adds mmc_hw_unstuck callback (structure mmc_host_ops) before resending a new command (call in mmc_blk_mq_rw_recovery, mmc_wait_for_req_done). Ludovic Barre (2): mmc: add unstuck function if host is in deadlock state mmc: mmci: add unstuck feature drivers/mmc/core/block.c | 11 +++++++++++ drivers/mmc/core/core.c | 35 +++++++++++++++++++++++++++++++++-- drivers/mmc/host/mmci.c | 23 +++++++++++++++++++++-- include/linux/mmc/core.h | 1 + include/linux/mmc/host.h | 7 +++++++ 5 files changed, 73 insertions(+), 4 deletions(-)