From patchwork Tue Apr 26 12:57:34 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 8938491 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7E7C19F441 for ; Tue, 26 Apr 2016 13:03:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A79B620166 for ; Tue, 26 Apr 2016 13:03:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C91AC2013D for ; Tue, 26 Apr 2016 13:03:57 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1av2dP-0000eU-4G; Tue, 26 Apr 2016 13:02:35 +0000 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1av2cn-0000DA-Vt for linux-arm-kernel@lists.infradead.org; Tue, 26 Apr 2016 13:01:59 +0000 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u3QCubZY022163; Tue, 26 Apr 2016 06:01:34 -0700 Received: from sc-exch04.marvell.com ([199.233.58.184]) by mx0b-0016f401.pphosted.com with ESMTP id 22g8jfqsq2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 26 Apr 2016 06:01:33 -0700 Received: from SC-EXCH02.marvell.com (10.93.176.82) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Tue, 26 Apr 2016 06:01:32 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server id 15.0.1104.5 via Frontend Transport; Tue, 26 Apr 2016 06:01:32 -0700 Received: from xhacker.marvell.com (unknown [10.37.130.134]) by maili.marvell.com (Postfix) with ESMTP id 5B7403F7043; Tue, 26 Apr 2016 06:01:31 -0700 (PDT) From: Jisheng Zhang To: , Subject: [RESEND PATCH v2 1/7] usb: xhci: plat: Fix suspend/resume when the optional clk exists Date: Tue, 26 Apr 2016 20:57:34 +0800 Message-ID: <1461675460-2295-2-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1461675460-2295-1-git-send-email-jszhang@marvell.com> References: <1461675460-2295-1-git-send-email-jszhang@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-04-26_07:, , 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=8.0.1-1603290000 definitions=main-1604260210 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160426_060158_294417_3B7638BC X-CRM114-Status: GOOD ( 10.43 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jisheng Zhang , yendapally.reddy@broadcom.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable 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 Commit 4718c1774051 ("usb: host: xhci-plat: add clock support") adds optional clk support, but it forgets to prepare/disable and enable/unprepare the clk in the resume/suspend path. This path fixes this issue by adding missing clk related calls. Signed-off-by: Jisheng Zhang Fixes: 4718c1774051 ("usb: host: xhci-plat: add clock support") --- drivers/usb/host/xhci-plat.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 474b5fa..8cb46cb 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -295,6 +295,7 @@ static int xhci_plat_remove(struct platform_device *dev) #ifdef CONFIG_PM_SLEEP static int xhci_plat_suspend(struct device *dev) { + int ret; struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -306,14 +307,25 @@ static int xhci_plat_suspend(struct device *dev) * reconsider this when xhci_plat_suspend enlarges its scope, e.g., * also applies to runtime suspend. */ - return xhci_suspend(xhci, device_may_wakeup(dev)); + ret = xhci_suspend(xhci, device_may_wakeup(dev)); + if (ret) + return ret; + + clk_disable_unprepare(xhci->clk); + + return ret; } static int xhci_plat_resume(struct device *dev) { + int ret; struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + ret = clk_prepare_enable(xhci->clk); + if (ret) + return ret; + return xhci_resume(xhci, 0); }