From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38023C43603 for ; Mon, 16 Dec 2019 18:40:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 06BFE206A5 for ; Mon, 16 Dec 2019 18:40:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576521611; bh=CJTseLSNVffxAdzFxRFh4J7A9zO0vfoNVnyFMxsRKJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=a/rK31ncRJtsawo/QQr1CUl6/nN4EqDt+Xe55UEy7+z0A75k5rtgVMYbL2B8IQo7l ElfXFH432MBfEIA8CGFJG4eoWmxw7vHeViG4PBPoMAT/uTnDoYWcpTn9vfsrb8wNeM Bij6ii3Yi/iga6WhY6AnbI3j7dCS091ARL72ElUI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727965AbfLPSkJ (ORCPT ); Mon, 16 Dec 2019 13:40:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:38792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729144AbfLPSCk (ORCPT ); Mon, 16 Dec 2019 13:02:40 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D9FBE2072D; Mon, 16 Dec 2019 18:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519360; bh=CJTseLSNVffxAdzFxRFh4J7A9zO0vfoNVnyFMxsRKJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xPLLqAoU4kInFOkmON6SuFmsdPkorFNtzch92p1tGoE7w5grZoFRRW7wkvrtvpo+e K1h7+9jW7fYTsbZMCFbT0IKdD6/iKrLHZWhc5Sq4NAMME48Q5FZOWa/EfQev6QkFmn ZKCA25XXqKLy/XaoyzJDIc/AjglNl8o+IfAX5MmU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thinh Nguyen , Felipe Balbi Subject: [PATCH 4.19 034/140] usb: dwc3: ep0: Clear started flag on completion Date: Mon, 16 Dec 2019 18:48:22 +0100 Message-Id: <20191216174758.476591105@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191216174747.111154704@linuxfoundation.org> References: <20191216174747.111154704@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thinh Nguyen commit 2d7b78f59e020b07fc6338eefe286f54ee2d6773 upstream. Clear ep0's DWC3_EP_TRANSFER_STARTED flag if the END_TRANSFER command is completed. Otherwise, we can't start control transfer again after END_TRANSFER. Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/ep0.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -1110,6 +1110,9 @@ static void dwc3_ep0_xfernotready(struct void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { + struct dwc3_ep *dep = dwc->eps[event->endpoint_number]; + u8 cmd; + switch (event->endpoint_event) { case DWC3_DEPEVT_XFERCOMPLETE: dwc3_ep0_xfer_complete(dwc, event); @@ -1122,7 +1125,12 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc case DWC3_DEPEVT_XFERINPROGRESS: case DWC3_DEPEVT_RXTXFIFOEVT: case DWC3_DEPEVT_STREAMEVT: + break; case DWC3_DEPEVT_EPCMDCMPLT: + cmd = DEPEVT_PARAMETER_CMD(event->parameters); + + if (cmd == DWC3_DEPCMD_ENDTRANSFER) + dep->flags &= ~DWC3_EP_TRANSFER_STARTED; break; } }