From patchwork Sun Jan 18 17:24:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sylvain Rochet X-Patchwork-Id: 5653851 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A27D9C058D for ; Sun, 18 Jan 2015 17:27:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DBC5120353 for ; Sun, 18 Jan 2015 17:27:21 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1E1FD20361 for ; Sun, 18 Jan 2015 17:27:21 +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 1YCtbX-0002sX-Hz; Sun, 18 Jan 2015 17:25:39 +0000 Received: from mx-guillaumet.finsecur.com ([91.217.234.131] helo=guillaumet.finsecur.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YCtaw-0001Zx-M8 for linux-arm-kernel@lists.infradead.org; Sun, 18 Jan 2015 17:25:04 +0000 Received: from [172.16.8.13] (helo=spice.lan) by guillaumet.finsecur.com with esmtps (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1YCtaX-000BmW-3j; Sun, 18 Jan 2015 18:24:37 +0100 Received: from gradator by spice.lan with local (Exim 4.84) (envelope-from ) id 1YCtaW-0002jJ-T2; Sun, 18 Jan 2015 18:24:36 +0100 From: Sylvain Rochet To: Boris Brezillon , Alexandre Belloni , plagnioj@jcrosoft.com, nicolas.ferre@atmel.com, linux-arm-kernel@lists.infradead.org, voice.shen@atmel.com, Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Wenyou Yang Date: Sun, 18 Jan 2015 18:24:34 +0100 Message-Id: <1421601875-9436-2-git-send-email-sylvain.rochet@finsecur.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1421601875-9436-1-git-send-email-sylvain.rochet@finsecur.com> References: <20150118175621.6b519cdc@bbrezillon> <1421601875-9436-1-git-send-email-sylvain.rochet@finsecur.com> X-SA-Exim-Connect-IP: 172.16.8.13 X-SA-Exim-Mail-From: sylvain.rochet@finsecur.com X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Subject: [PATCHv3 1/2] USB: gadget: atmel_usba_udc: Fixed vbus_prev initial state X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on guillaumet.finsecur.com) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150118_092502_936547_152F4276 X-CRM114-Status: UNSURE ( 7.97 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.0 (/) Cc: Sylvain Rochet X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP If vbus gpio is high at init, we should set vbus_prev to true accordingly to the current vbus state. Without that, we skip the first vbus interrupt because the saved vbus state is not consistent. Signed-off-by: Sylvain Rochet Acked-by: Nicolas Ferre --- drivers/usb/gadget/udc/atmel_usba_udc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index ce88237..e207d75 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1791,6 +1791,8 @@ static int atmel_usba_start(struct usb_gadget *gadget, toggle_bias(1); usba_writel(udc, CTRL, USBA_ENABLE_MASK); usba_writel(udc, INT_ENB, USBA_END_OF_RESET); + + udc->vbus_prev = 1; } spin_unlock_irqrestore(&udc->lock, flags);