From patchwork Mon Aug 12 01:22:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 2842838 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 [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8A8FB9F239 for ; Mon, 12 Aug 2013 03:34:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B7FEA20284 for ; Mon, 12 Aug 2013 03:34:09 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 67F622027F for ; Mon, 12 Aug 2013 03:34:08 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V8ihC-0005Ly-0s; Mon, 12 Aug 2013 03:21:27 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V8igO-0005L1-HF; Mon, 12 Aug 2013 03:20:36 +0000 Received: from va3ehsobe004.messaging.microsoft.com ([216.32.180.14] helo=va3outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1V8ifE-0005D1-1l for linux-arm-kernel@lists.infradead.org; Mon, 12 Aug 2013 03:19:24 +0000 Received: from mail166-va3-R.bigfish.com (10.7.14.254) by VA3EHSOBE014.bigfish.com (10.7.40.64) with Microsoft SMTP Server id 14.1.225.22; Mon, 12 Aug 2013 03:18:58 +0000 Received: from mail166-va3 (localhost [127.0.0.1]) by mail166-va3-R.bigfish.com (Postfix) with ESMTP id 0551920158; Mon, 12 Aug 2013 03:18:58 +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: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz1de098h8275bh1de097hz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1155h) Received: from mail166-va3 (localhost.localdomain [127.0.0.1]) by mail166-va3 (MessageSwitch) id 1376277535980274_27170; Mon, 12 Aug 2013 03:18:55 +0000 (UTC) Received: from VA3EHSMHS019.bigfish.com (unknown [10.7.14.247]) by mail166-va3.bigfish.com (Postfix) with ESMTP id D6E851A0050; Mon, 12 Aug 2013 03:18:55 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS019.bigfish.com (10.7.99.29) with Microsoft SMTP Server (TLS) id 14.16.227.3; Mon, 12 Aug 2013 03:18:54 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-004.039d.mgd.msft.net (10.84.1.14) with Microsoft SMTP Server (TLS) id 14.3.136.1; Mon, 12 Aug 2013 03:18:53 +0000 Received: from shlinux1.ap.freescale.net (shlinux1.ap.freescale.net [10.192.225.216]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r7C3HoqS027315; Sun, 11 Aug 2013 20:18:49 -0700 From: Peter Chen To: Subject: [PATCH v15 13/13] usb: chipidea: udc: .pullup is valid only when vbus is there Date: Mon, 12 Aug 2013 09:22:59 +0800 Message-ID: <1376270579-13493-14-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1376270579-13493-1-git-send-email-peter.chen@freescale.com> References: <1376270579-13493-1-git-send-email-peter.chen@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130811_231924_174462_01A68340 X-CRM114-Status: GOOD ( 10.98 ) X-Spam-Score: -2.6 (--) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, mkl@pengutronix.de, peter.chen@freescale.com, kernel@pengutronix.de, maxime.ripard@free-electrons.com, shawn.guo@linaro.org, festevam@gmail.com, linux-arm-kernel@lists.infradead.org, LW@KARO-electronics.de X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-6.9 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 For chipidea, the IP must know vbus before the controller begins to run. So the .pullup should only be called when the vbus is there. Tested-by: Marek Vasut Signed-off-by: Peter Chen --- drivers/usb/chipidea/udc.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 90c3572..6b4c2f2 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1511,6 +1511,9 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on) { struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget); + if (!ci->vbus_active) + return -EOPNOTSUPP; + if (is_on) hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS); else