From patchwork Tue Jan 26 10:15:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 573152 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id D49FC1402F0 for ; Tue, 26 Jan 2016 21:23:49 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933294AbcAZKXr (ORCPT ); Tue, 26 Jan 2016 05:23:47 -0500 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:55761 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964822AbcAZKUc (ORCPT ); Tue, 26 Jan 2016 05:20:32 -0500 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.15.0.59/8.15.0.59) with SMTP id u0QAG9SQ002215; Tue, 26 Jan 2016 02:19:59 -0800 Received: from sc-exch01.marvell.com ([199.233.58.181]) by mx0b-0016f401.pphosted.com with ESMTP id 20np7sjt0v-1 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 26 Jan 2016 02:19:59 -0800 Received: from SC-EXCH03.marvell.com (10.93.176.83) by SC-EXCH01.marvell.com (10.93.176.81) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Tue, 26 Jan 2016 02:19:58 -0800 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server id 15.0.1104.5 via Frontend Transport; Tue, 26 Jan 2016 02:19:58 -0800 Received: from xhacker.marvell.com (unknown [10.37.135.134]) by maili.marvell.com (Postfix) with ESMTP id 299F53F7040; Tue, 26 Jan 2016 02:19:55 -0800 (PST) From: Jisheng Zhang To: , , , , , , , , , , , , CC: , , , , , , Jisheng Zhang Subject: [PATCH v4 05/13] mmc: sdhci-of-arasan: fix clk issue in sdhci_arasan_remove() Date: Tue, 26 Jan 2016 18:15:45 +0800 Message-ID: <1453803353-6266-6-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1453803353-6266-1-git-send-email-jszhang@marvell.com> References: <1453803353-6266-1-git-send-email-jszhang@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-01-26_03:, , signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1507310008 definitions=main-1601260186 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org sdhci_pltfm_unregister() could operate host's registers, it will cause problems if the clk is already disabled and unprepared. Fix this issue by moving the clk_disable_unprepare() call to the end of remove function. Signed-off-by: Jisheng Zhang Acked-by: Sören Brinkmann --- drivers/mmc/host/sdhci-of-arasan.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index 75379cb..50eb8bc 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -206,13 +206,16 @@ clk_dis_ahb: static int sdhci_arasan_remove(struct platform_device *pdev) { + int ret; struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_arasan_data *sdhci_arasan = pltfm_host->priv; + ret = sdhci_pltfm_unregister(pdev); + clk_disable_unprepare(sdhci_arasan->clk_ahb); - return sdhci_pltfm_unregister(pdev); + return ret; } static const struct of_device_id sdhci_arasan_of_match[] = {