From patchwork Wed Oct 30 14:09:48 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aisheng Dong X-Patchwork-Id: 3114821 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 30B0C9F3E2 for ; Wed, 30 Oct 2013 14:29:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 827082039A for ; Wed, 30 Oct 2013 14:29:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 451CE20219 for ; Wed, 30 Oct 2013 14:29:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754555Ab3J3O26 (ORCPT ); Wed, 30 Oct 2013 10:28:58 -0400 Received: from mail-db8lp0188.outbound.messaging.microsoft.com ([213.199.154.188]:47170 "EHLO db8outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754527Ab3J3O25 (ORCPT ); Wed, 30 Oct 2013 10:28:57 -0400 Received: from mail2-db8-R.bigfish.com (10.174.8.226) by DB8EHSOBE016.bigfish.com (10.174.4.79) with Microsoft SMTP Server id 14.1.225.22; Wed, 30 Oct 2013 14:28:55 +0000 Received: from mail2-db8 (localhost [127.0.0.1]) by mail2-db8-R.bigfish.com (Postfix) with ESMTP id BA5CA9C02C4; Wed, 30 Oct 2013 14:28:55 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6h1082kzz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h1155h) Received: from mail2-db8 (localhost.localdomain [127.0.0.1]) by mail2-db8 (MessageSwitch) id 1383143334427125_26861; Wed, 30 Oct 2013 14:28:54 +0000 (UTC) Received: from DB8EHSMHS001.bigfish.com (unknown [10.174.8.248]) by mail2-db8.bigfish.com (Postfix) with ESMTP id 638261980041; Wed, 30 Oct 2013 14:28:54 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB8EHSMHS001.bigfish.com (10.174.4.11) with Microsoft SMTP Server (TLS) id 14.16.227.3; Wed, 30 Oct 2013 14:28:54 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.158.2; Wed, 30 Oct 2013 14:28:52 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r9UEShvs011976; Wed, 30 Oct 2013 07:28:50 -0700 From: Dong Aisheng To: CC: , , , , , Subject: [PATCH v2 1/6] mmc: sdhci: clear auto cmd setting bits for no data cmds Date: Wed, 30 Oct 2013 22:09:48 +0800 Message-ID: <1383142193-24950-2-git-send-email-b29396@freescale.com> X-Mailer: git-send-email 1.7.2.rc3 In-Reply-To: <1383142193-24950-1-git-send-email-b29396@freescale.com> References: <1383142193-24950-1-git-send-email-b29396@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The auto cmd settings bits should be cleared before sending new commands or we may receive command timeout error for normal commands due to wrongly pre-sent auto cmd. e.g. we receive CMD13 timeout error due to ACMD23 is wrongly enabled by former data commands. mmc2: new high speed DDR MMC card at address 0001 mmcblk1: mmc2:0001 SEM08G 7.39 GiB mmcblk1boot0: mmc2:0001 SEM08G partition 1 2.00 MiB mmcblk1boot1: mmc2:0001 SEM08G partition 2 2.00 MiB mmcblk1rpmb: mmc2:0001 SEM08G partition 3 128 KiB mmcblk1: p1 p2 p3 p4 < p5 p6 p7 > mmc2: Timeout waiting for hardware interrupt. mmcblk1boot1: unknown partition table mmc2: Timeout waiting for hardware interrupt. mmcblk1boot0: unknown partition table Signed-off-by: Dong Aisheng --- drivers/mmc/host/sdhci.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 68b3cac..22eab3a 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -903,8 +903,13 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host, u16 mode; struct mmc_data *data = cmd->data; - if (data == NULL) + if (data == NULL) { + /* clear Auto CMD settings for no data CMDs */ + mode = sdhci_readw(host, SDHCI_TRANSFER_MODE); + sdhci_writew(host, mode & ~(SDHCI_TRNS_AUTO_CMD12 | + SDHCI_TRNS_AUTO_CMD23), SDHCI_TRANSFER_MODE); return; + } WARN_ON(!host->data);